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高中二年级英语

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  • 改错题
    短文改错
    I woke up to find there was only fifteen minutes to                               
    go before classes began. Afraid of late, I got dressed                            
    quick and rushed to the bus stop without breakfast.                              
    But there were lots of people wait for the bus                                  
    at that time. I had no choice but run towards school.                             
    In a hurry, I knocked down a old lady but I didn't                              
     help her down. Though in time for the class, I spent                              
    that day in extremely anxiety. I felt terribly                                            
    sorry for that I did and wondered what had become                             
    of the old lady. If only I stopped to help her up!            
      1._____
      2._____
      3._____
      4._____
      5._____
      6._____
      7._____
      8._____
      9._____
    10._____
                          

    本题信息:2010年陕西省期末题英语改错题难度一般 来源:刘平(高中英语)
  • 本题答案
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本试题 “短文改错I woke up to find there was only fifteen minutes to go before classes began. Afraid of late, I got dressed quick and rushed to the bus stop...” 主要考查您对

不定冠词

连接代词

形容词

副词

动名词

不定式

过去进行时

主谓一致

虚拟语气

等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
  • 不定冠词
  • 连接代词
  • 形容词
  • 副词
  • 动名词
  • 不定式
  • 过去进行时
  • 主谓一致
  • 虚拟语气

不定冠词的概念:

冠词是置于名词前,说明各词所表示的人或事物的一种虚词,它不能离开名词而单独存在。冠词有两种,一种是定冠词,一种是不定冠词。定冠词是the,不定冠词有两种形式,一是a,另一是an。不定冠词a用于辅音音素起首的单词前,an用于元音音素起首的单词前。如:a bike,  a dog,  an egg,  an elephant


不定冠词的特殊用法:

(1)用于序数词之前,表示数量或序数的增加:
如:Soon I saw a second plane.不久我又看到了另一架飞机。
        "This is the second time that I've read the book." “这是我第二次看这本书。”   
        "Do you want to read it a third time?"“你还想看第三次吗?”
(2)用于表示“非常”、“很”等意义的most前:
如:This is a most interesting story. 这是一个非常有趣的故事。
(3)用于物质名词前,使之转化为具体名词,表示“一种”、“一杯之量”等:
如:A coffee, please. 请给我来杯咖啡。 
        I'd like a tea, please. 我要来杯茶。
(4)用于抽象名词前,使之具体化,表示与该之相关的具体的人或事:
如:He was a success in business. 他事业成功。
        It's a pleasure to talk with you. 同你谈话是件令人愉快的事。
(5)用于指人的专有名词前,指某人、某人的作品或艺术品、…似(式)的人等:
如:A Mr Smith wants to see you. 一位名叫史密斯先生的人想见你。
        He bought a complete Lu Hsun. 他买了一套鲁迅全集。
        He thought he was a Zhu Geliang. 他自以为是诸葛亮。
(6)用于某些由动词转化来或具有动作意味的名词前,表示一次、一番等义(通常与have,take,make,give等动词连用):
如:Let's go out for a walk. 我们出去走走吧。
如:Do you care for as moke? 抽烟吗? 
        Would you like a drink? 要喝一杯吗?
(7)有的不可数名词或本来带有定冠词the的名词,由于受定语的修饰,其前可用不定冠词,表示某种状态。此时的不定冠词含有类似akindof的意思:
如:have breakfast 吃早餐─have a quick breakfast 吃快餐
        the world 世界─a world like ours 像我们这样的世界
(8)构成短语表示数量:
如:a few apples 几个苹果
        a little money 一点点钱
        a lot of time 许多时间
        a great many friends 许多朋友


不定冠词与one的用法解析:

1、两者均可表示“一”的意思,有时可互换。
如:About a[one] thousand students attended the meeting. 大约有1000学生参加了会议。
注:在数字开头时,两者均可用;但若不是数字开头,则应用one,如不可说three thousand a hundred,而说three thousand one hundred  
如:A [One]Mr Smith wants to see you. 一个名叫史密斯先生的人想见你。(a Mr...与one Mr...同义,也可说a certain Mr...,但如果没有Mr这样的词,两者则不宜随便互换,否则含意会发生变化。
2、尽管两者均可表示“一”,有时也可换用,但毕竟由于两者的词性不同,用法不同,在多数情况下是不能互换的:
(1)从词性上看:a(an)是不定冠词,主要表示类别,即着重表示其后的名词是某物,而不是其他物;而one表示“一(个)”时是数词,主要表示数量,即强调在数量上是一个,而不是两个或多个。
比较:Give me a dictionary. 给我一本字典。
            Give me one dictionary. 给我一本字典。
前者强调的是,我要的是一本字典,而不是一本教材,也不是一本小说等;而后者强调的是,我要的是一本字典,而不是两本字典或多本字典)。
再比较以下一组表达在意义上的区别:
more than a year一年多 (如一年零三个月等)
more than one year 不止一年 (如两年或三年等)
(2)由于one是数词,着重数量意义,所以当要强调数量、进行数量对比或回答how many的提问时,均应用one,而不能用a(an)。
如:He has only one pen, but I have two. 他只有一枝钢笔,但我有两枝。
        I want one box, not five. 我想要一个盒子,不是要五个。 
        —How many friends do you have here? 你在这儿有多少个朋友?
        —Only one.  只有一个。
(3)在某些表达中,两者均可用,但含义不同:at a time 每次,同时    at one time 一度,曾经 as a man 就一个人的性格而论  as one man一起,同时,全体一致地
在某些表达中,两者均可用,虽含义相同,但表达不同:
on a hot summe rafternoon 一个炎热的夏日的下午(注意用介词on)
one hot summer afternoon 一个炎热的夏日的下午(注意不用介词on) 
an hour and a half一个半小时(通常不说one hour and a half)
one and a half hours 一个半小时
a minute or two一两分钟(通常不说one minute or two)
one or two minutes 一两分种
在绝大多数习语中,两者是不能换用的。如:
in a hurry 匆忙     once up on a time 从前     as a result  结果      all of a sudden突然    oneday 一天  
one by one一个一个地     one and all 全部,每个人   one and the same 完全相同的


英语不定冠词(a/an)的用法:

1、用a还是an:一般说来,辅音或半元音[j, w]开头的词要前用a。
如:He has a computer (watch). 他有一台电脑(一块手表)。
        He's a university student (European). 他是大学生(欧洲人)。
元音开头的词前要用an。
如:This is an egg (hones tboy). 这是一只鸡蛋(诚实的男孩)。
注意:有的字母(如a,e,f,h,i等) 或缩略词,若第一个音是元音也应用an。
如:He missed an "n" in the word. 他写的这个单词漏了一个n。
2、不要从汉语习惯出发,漏掉必用的a/an。
如:他父亲是著名诗人。
误:His father is famous poet.
正:His father is a famous poet.
3、用于转化为普通名词的专有名词前,表示某某人或某某人的一部作品、艺术品等。
如:A Mr Smith wants to see you. 一位叫史密斯先生的人想见你。
        He bought a complete Lu Hsun. 他买了一套鲁迅全集。
4、用于转化为普通名词的物质名词前,表示相应的产品或种类,有时表示数量关系。
如:It’sagoodwine.这是(一种)好酒。 Twocoffeesandatea,please.请来两杯咖啡和一杯茶。
5、用于具体化的抽象名词前,表示与该抽象名词意义相关的人或事等。
如:The party was a great success. 晚会开得非常成功。
        It's a pleasure to talk with you. 同你谈话是件愉快的事。
6、用于某些由动词转化来或具有动作意味的名词前,表示一次、一番等意义。
如:Let me have a look. 让我看看吧。
        I'll give the car a good wash. 我要把车好好洗一洗。
7、用于序数词前表示数量或序数的增加。
如:He bought a second computer. 他又买了一台(即第二台)电脑。
        Later she borne a third son. 后来她又生了第三个儿子。
8、有的不可数名词或本来应该带定冠词(the)的名词,由于受定语(尤其是形容词)的修饰,其前一般要用不定冠词或改用不定冠词,表示某种状态,此时的不定冠词通常含有a kind of的意思。
如:have breakfast 吃早餐→have a quick breakfast 吃快餐
        the world 世界→a world like ours 像我们这样的世界
注:有些不可数名词即使受形容词的修饰也不能用不定冠词,容易弄错的有:news(消息),advice(忠告),luck(运气),fortune(运气),work(工作),fun(娱乐,有趣的事),weather(天气),homework(家庭作业),housework(家务活),information(情报),behavior(行为),harm(伤害),damage(损害),progress(进步),furniture(家具),baggage(行李),luggage(行李),poetry(诗),scenery(风景)等。
9、两个单数可数名词连用表示一个整体时,只用一个不定冠词。
如:He is a teacher and poet. 他既是老师又是诗人。
        There's a horse and cart on the road. 路上有一辆马车。
10、不定冠词可用来表示“类属”,这是其基本用法,它表明的是某一类属中的每一个人和东西都能说明该类属的整体情况(有类似汉语的“举一反三”或“以此类推”的含义)。此时也可用定冠词或名词复数形式来表示。
如:马是有用的动物。
正:A horse is a useful animal.
正:The horse is a useful animal.
正:Horses are useful animals.
若不是说明每一个人和东西的情况,而是说整个类属,则不能用不定冠词,而要用定冠词。
如:The tiger is indanger of becoming extinct.老虎面临绝种的危险。
        Alexander Graham Bell invented the telephone in 1876.亚历山大·格雷汉母·贝尔于1876年发明了电话。


不定冠词知识体系:

不定冠词 a 1、辅音音素开头的单词前用a,否则用an。
2、泛指,表“一个”但概念比one弱。
3、表类别 a+可数名词单数,不译为“一”。
4、表示单位,相当于“每”的意思。
5、用于序数词前,表“又一,再一”。
6、用于某些固定词组中,a lot of等。
an

使用不定冠词和不用不定冠词的差异:

1、英语中的某些名词即可用作不可数名词,又可用作可数名词,但是含义不同,用法也不一样。
如:iron 铁;an iron 一个熨斗
        kindness 和善; a kindness 一件善事
2、“with+抽象名词”使用时相当于副词,抽象名词前不用不定冠词。
如:with pleasure  乐意地
        with kindness  亲切地
        with joy  高兴地
        with diffculty 吃力地
        with angry    生气地
但在“with+a+名词”结构中虽有不定冠词,却没有实际意义。
如:with a smile 微笑地
        with an effort 努力地
        with a light heart  愉快地

因汉语习惯用错不定冠词的几种情形:
(1)单数可数名词若泛指,其前需加a/an,不要按汉语习惯漏掉此不定冠词:
如:他是著名影星。
正:Heisafamousfilmstar.
误:Heisfamousfilmstar.
(2)不定冠词不能与指示代词、物主代词、所有格等连用:
如:我在公园遇到了我的一位朋友。
正:Imetafriendofmineinthepark.
误:Imetmyafriendinthepark.
(3)不要受汉语影响而用错不定冠词位置:
如:我从未读过如此有趣的书。
正:Ihaveneverreadsuchaninterestingbook.
误:Ihaveneverreadasuchinterestingbook.
误:Ihaveneverreadasointerestingbook.

不定冠词的省略与重复

(1)在不引起误会的情况下,两个并列名词中的后一个名词前的不定冠词可以省略:
如:The noun is the name of a person or thing. 名词是人和物的名称。
(2)当两个并列名词指的是同一个人时,后一名词前的不定冠词通常省略:
如:His father is a teacher and poet. 他父亲是位教师兼诗人。
但如果要强调这两种身份,也可后一个不定冠词:
His father is a teacher and a poet. 他父亲既是教师,又是诗人。
有时,由于两个并列的名词关系比较紧密、被视为一个整体,也可只用一个冠词:
A man and woman are walking arm-in-arm.一对男女手挽着手走着。
(3)两个形容词并列同时修饰一个名词时,若该名词指的是两个事物,则通常应分别使用两个冠词:
如:We have a black and a white cat. 我们养了一只黑猫和一只白猫。
(比较:We have a black and white cat. 我们养了一只黑白花猫。)
但是,有时两个并列的名词只一个事物,为了加强语气,也有了两个冠词:
如:It was a cold and a dark night. 那是一个又冷又黑的夜晚。
(4)有些由两样东西构成的“自然成对”使用的事物,通常只在其前使用一个冠词:
如:a knife and fork一副刀叉 
        a cup and saucer 一副茶杯与茶托
        a horse and cart 一辆马车
        a needle and thread 一根带线的针
        hire a car and driver 租一辆配有司机的汽车
有时连第一个冠词也省略(尤其是与介词连用时):
如:with knife and fork 用刀叉
(5)当要对两个并列的名词进行选择和比较方面的强调时,通常应重复两个冠词:
如:Give me a pen, not a pencil. 给我一支钢笔,不是铅笔。
        Do you want a novel or a dictionary? 你是想要本小说,还是想要本字典?


连接代词的概念:

连接代词常用来引导一个主语从句、宾语从句和表语从句,在句中可用作主语、宾语、表语、定语等,连接代词主要包括who, whom, what, which, whose, whoever, whatever, whichever, whosever等。


whatever, whoever, whichever 用法说明:

主要用于引导主语从句和宾语从句。
如:He does whatever she asks him to do. 她要他做什么,他就做什么。 
        Whoever breaks the rules will be punished.谁违反这些规则都将受到处罚。
        I'll give the ticket to whoever want sit. 请想要这票,我就把它给谁。 
        Whichever team gains the most points wins. 哪个队得分最多,哪个队就赢。
注:其中的ever主要用于加强语气,含有“一切”、“任何”、“无论”之义。使用这类词时,注意不要按汉语习惯用错句子结构:
如:任何人(谁)先来都可以得到一张票。
误:Anyone comes first can get a ticket./ Who comes first can get a ticket.
正:Anyone who comes first can get a ticket./ Whoever comes first can get a ticket.


连接代词的用法:

1、连接代词主要包括who, whom, what, which, whose, whoever, whatever, whichever, whosever等,它们在句中可用作主语、宾语、表语、定语等,可以引导主语从句、宾语从句和表语从句:
如:I don't know who he is. 我不知道他是谁。
       What he says sounds reasonable. 他说的话听起来很有道理。 
       The question is who(m) we should trust. 问题是我们该信任谁。 
       I'll take whoever wants to go. 谁想去我就带谁去。 
       Take whichever seat you like? 你喜欢坐哪个座位就坐哪个?
       I will just say whatever comes into my mind. 我想到什么就说什么。
注:who, whom, whoever等不用于名词前作定语。
2、what的两种用法。请看以下两个句子:
(1)I didn't know what he wanted. 我不知道他想要什么。
(2)I gave her what she wanted. 我给了她想要的一切。
上面第一句中的what表示“什么”,带有疑问的意味;第二句中的what表示“所…的一切事或东西”,其意义上大致相当于that(those) which, the thing(things) that, anything that, all that, as much as等,又如:
What[=That which] you say is quite true. 你说的完全是事实。
He saves what[=all that] he earns. 他赚多少,积蓄多少。
Call it what[=anything that] you please. 你喜欢叫它什么就叫它什么。
这样用的what有时还可后接一个名词:
如:He gave me what money[=all the money that] he had about him. 他把身边带有的钱全给了我。
        What friends[=All the friends that] he has are out of the country. 他所有的朋友都在国外。


连接代词知识体系:

 


whatever, whoever, whichever 用法说明:

主要用于引导主语从句和宾语从句。
如:He does whatever she asks him to do. 她要他做什么,他就做什么。 
        Whoever breaks the rules will be punished.谁违反这些规则都将受到处罚。
        I'll give the ticket to whoever want sit. 请想要这票,我就把它给谁。 
        Whichever team gains the most points wins. 哪个队得分最多,哪个队就赢。
注:其中的ever主要用于加强语气,含有“一切”、“任何”、“无论”之义。使用这类词时,注意不要按汉语习惯用错句子结构:
如:任何人(谁)先来都可以得到一张票。
误:Anyone comes first can get a ticket./ Who comes first can get a ticket.
正:Anyone who comes first can get a ticket./ Whoever comes first can get a ticket.


形容词的概念:

形容词(adjective),简称adj.或a,形容词用来修饰名词或代词,表示人或事物的性质、状态,和特征的程度好坏与否,形容词在句中作定语、表语、宾语补足语。通常,可将形容词分成性质形容词和叙述形容词两类,其位置不一定都放在名词前面。


形容词的作用与位置:

形容词是用来修饰名词的,常被放在名词前作定语,或放在系动词后面作表语。以下属几种特殊情况,须牢记;
(1)形容词短语作定语,定语后置。
如:a language difficult to master,
        a leaning tower about 180 feet high
(2)表语形容词(afraid、alike、alone、asleep、awake、alive等)作定语,定语后置。如a man alive。有些表身体健康状况的形容词如well、faint、ill只作表语。sick既可作表语又可作定语,ill如作定语意为“bad”。
(3)用作定语,修饰由不定代词one、no、any、some和every构成的复合词如anything、something等时,通常后置。
如:I have something important to tell you.
(4)else常用作疑问代词和不定代词的后置定语。
(5)enough、nearby修饰名词前置或后置,程度副词一般位于形容词、副词前面,enough修饰形容词、副词时,必须后置。
(6)几个并列的形容词作定语,其语序通常为:限定语(The、A)+描绘性形容词+size(大小)+shape(形状)+age(年龄、时间)+color(颜色)+origin(国籍、来源)+material(材料)+purpose(目的)+名词。

口诀:
限定描绘大长高,形状年龄和新老;颜色国籍跟材料,作用类别往后靠。
如:a heavy black Chinese steel umbrella,
        the man's first tow interesting little red French oil paintings


形容词的用法:

1、形容词修饰名词,说明事物或人的性质或特征。通常,可将形容词分成性质形容词和叙述形容词两类,其位置不一定都放在名词前面:
1)直接说明事物的性质或特征的形容词是性质形容词,它有级的变化,可以用程度副词修饰,在句中可作定语、表语和补语。例如:hot热的。
2)叙述形容词只能作表语,所以又称为表语形容词。这类形容词没有级的变化,也不可用程度副词修饰。
大多数以a开头的形容词都属于这一类。例如:
afraid害怕的。(错)Heisanillman. (对)Themanisill. (错)Sheisanafraidgirl. (对)Thegirlisafraid.
这类词还有:well,unwell,ill,faint,afraid,alike,alive,alone,asleep,awake等。
3)形容词作定语修饰名词时,要放在名词的前边。但是如果形容词修饰以-thing为字尾的词语时,要放在这些词之后。例如:somethingnice

2、用形容词表示类别和整体:
1)某些形容词加上定冠词可以泛指一类人,与谓语动词的复数连接。如:the dead,the living,the rich,the poor,the blind,the hungry The poorarelosinghope.穷人失去了希望。
2)有关国家和民族的形容词加上定冠词指这个民族的整体,与动词的复数连用。如:the British,the English,the French,the Chinese. The English have wonderful senseofhumor.

以-ly结尾的形容词:
1)大部分形容词加-ly可构成副词。但friendly,deadly,lovely,lonely,likely,lively,ugly,brotherly,仍为形容词。改错:
如:(错)She sang lovely.
        (错)He spoke to me very friendly.
        (对)Her singing was lovely.
        (对)He spoke to me in a very friendly way.
2)有些以-ly结尾既为形容词,也为副词。 daily,weekly,monthly,yearly,early .
如:The Times is a daily paper. 
        The Times is published daily.


形容词知识体系:

 


复合形容词的构成

(1)形容词+名词+ed:
          如:kind-hearted 好心的,white-haired 白发的
(2)形容词+形容词:
          如:red-hot 炽热的,dark-blue 深蓝的
(3)形容词+现在分词:
          如:good-looking 好看的,easy-going 随和的
(4)副词+现在分词:
          如:hard-working 勤劳的,fast-moving 快速转动的
(5)副词+过去分词:
          如:hard-won 得来不易的,newly-made 新建的
(6)名词+形容词:
          如:life-long 终生的,world-famous 世界闻名的
(7)名词+现在分词:
          如:peace-loving 爱好和平的,fun-loving 爱开玩笑的
(8)名词+过去分词:
          如:snow-covered 白雪覆盖的,hand-made 手工的
(9)数词+名词+ed:
          如:four-storeyed 4层楼的,three-legged 3条腿的
(10)数词+名词(名词用单数):
          如:ten-year 10年的,  two-man 两人的


副词的概念:

副词是指在句子中表示行为或状态特征的词,用来修饰动词、形容词、其他副词、介词短语、非谓语动词乃至整个句子,表示时间、地点、程度、方式等概念。


副词的位置:

1)在动词之前。
2)在be动词、助动词之后。
3)多个助动词时,副词一般放在第一个助动词后。
注意:
a. 大多数方式副词位于句尾,但宾语过长,副词可以提前,以使句子平衡。
如:We could see very clearly a strange light ahead of us.
b. 方式副词well,badly糟、坏,hard等只放在句尾。
如:He speaks English well.

副词的排列顺序:

1)时间,地点副词,小单位的在前,大单位在后。
2)方式副词,短的在前,长的在后,并用and或but等连词连接。
如:Please write slowly and carefully.
3)多个不同副词排列:程度+地点+方式+时间副词。
注意:副词very可以修饰形容词,但不能修饰动词。
改错:(错)I very like English.
            (对)I like English very much.
注意:副词enough要放在形容词的后面,形容词enough放在名词前后都可。
如:I don't know him well enough. 
        There is enough food for everyone to eat.
        There is food enough for everyone to eat.


兼有两种形式的副词:

1)close与closely:
      close意思是“近”;closely意思是“仔细地”。
      如: He is sitting close to me.
               Watch him closely.
2)late与lately:
      late意思是"晚";lately意思是“最近” 。
      如:You have come too late. 
              What have you been doing lately?
3)deep与deeply:
      deep意思是“深”,表示空间深度;deeply时常表示感情上的深度,“深深地” 。
      如:He pushed the stick deep into the mud. 
              Even father was deeply moved by the film.
4)high与highly:
      high表示空间高度;highly表示程度,相当于much。
      如:The plane was flying high.
              I think highly of your opinion.
5)wide与widely:
      wide表示空间宽度;widely意思是“广泛地”,“在许多地方”。
      如:He opened the door wide.
              English is widely used in the world.
6)free与freely:
      free的意思是“免费”;freely的意思是“无限制地”。
      如:You can eat free in my restaurant whenever you like. 
              You may speak freely, say what you like.


副词知识体系:


动名词概念:

动名词是一种兼有动词和名词特征的非限定动词。它可以支配宾语,也能被副词修饰,动名词有时态和语态的变化。


现在分词和动名词用法比较:

动词的-ing形式包括现在分词和动名词两种形式。他们的句法功能如下:
动词的-ing形式如果作句子的主语或者宾语时,应该是动名词形式;如果作补语或者状语时,应该是现在分词形式。那么作表语或者定语的动名词和现在分词又该怎样区分呢?
1、动名词与现在分词作表语时的比较:
(1)动名词作表语说明主语的内容,回答what的问题;现在分词作表语相当于形容词作表语,说明主语的性质、特征等,回答how的问题。
如:One of the best exercises is swimming. 游泳是最好的运动项目之一。 
        What pleases him most is bathing in the sea. 最使他高兴的事是在海中沐浴。 
        The situation both at home and abroad is very in-spiring. 国内外的形势都很鼓舞人心。
        The color is pleasing to the eye. 颜色悦目。
(2)动名词作表语,表语和主语几乎处于同等地位,可以互换位置,其句意不变;现在分词作表语,表语和主语则不能互换位置。
如:Our work is serving the people.
      (=Serving the people is our work.)我们的工作是为人民服务。 
        The news was disappointing. 那消息令人失望。
(3)作表语的现在分词前可以用very,quite,rather,greatly等副词修饰,而动名词则不可以。
如:What he said was very encouraging. 他的话很鼓舞人心。
        Our goal is realizing the four modernizations in the near future. 我们的目标是在不久的将来实现四个现代化。
(4)现在分词与形容词一样可以和more,the most构成形容词的比较级和最高级,而动名词则不可以。
如:The story is the most fascinating. 那个故事最迷人。
(5)作表语用的现在分词除了和be连用以外,还可以和其它的系动词连用;而作表语的动名词则通常只能和be连用。
如:His speech seems inspiring.他的演讲似乎很鼓舞人心。
        His interest is writing for the news papers. 他的爱好是给报社写文章。
(6)有些用作表语的现在分词已经形容词化了。常见的有:exciting,moving,inspiring,missing,interesting,disappointing等。
2、动名词与现在分词作定语时的比较:
(1)动名词作定语时,表示它所修饰的名词的性能和用途,和它所修饰的名词在逻辑上没有主谓关系;
现在分词作定语时,表示它所修饰的名词正在进行的动作,和它所修饰的名词在逻辑上有主谓关系,常可以扩展成一个定语从句。
如:a swimming girl=a girl who is swimming 一个在游泳的姑娘
        a walking stick=a stick that is used for walking 一根拐杖
(2)现在分词作定语有时可以后置,而动名词则通常只能放在它所修饰的名词之前。
如:The girl wearing glasses is one of his students. 戴眼镜的那个女孩是他的一个学生。
        I bought some reading materials. 我买了一些阅读材料。


 动名词的用法:

1、作主语:
例如:Fighting broke out between the South and the North. 南方与北方开战了。 
2、作宾语:  
a. 有些动词可以用动名词作宾语。
例如:admit承认 appreciate感激 avoid避免 complete完成 consider认为 delay耽误 deny否认 detest讨厌 endure忍受 enjoy喜欢 escape逃脱 fancy想象 finish完成 imagine想象 mind介意 miss想念 postpone推迟 practice训练 recall回忆 resent讨厌 resume继续 resist抵抗 risk冒险 suggest建议 face面对 include包括 stand忍受 understand理解 forgive宽恕 keep继续
例如:Would you mind turning down your radio a little, please? 你把收音机音量调小一点,好吗?
        The squirrel was lucky that it just missed being caught. 这松鼠幸运得很,刚逃避了被逮住的厄运。     
b. 有些结构后面可以用动名词作宾语或其他成分。
例如:admit to  prefer...to   burst out   keep on   insist on   count on   set about   put off   be good at   take up   give up   be successful in   be used to   lead to  devote oneself to   object to  stick to  no good   no use be fond of   look forward to  be proud of   be busy   can't help  be tired of   be capable of   be afraid of   think of
3、作表语,对主语说明、解释:
例如:Her job is washing, cleaning and taking care of the children. 她的工作是洗刷、清扫和照顾孩子。
比较:She is washing, cleaning and taking care of the children.
4、作定语,一般表示所修饰名词事物的用途:
例如:a writing desk=a desk for writing 写字台
            a swimming pool=a pool swimming 游泳池
有些动名词作定语,与所修饰的名词关系比较复杂。
例如:boiling point=a temperature point at which something begins to boil 沸点
            a walking tractor=a tractor which a driver can operate while he or she is walking behind it 手扶拖拉机


动名词知识体系:

 


动名词与不定式用法对比:

 


动词不定式的概念:

动词不定式指由to加上动词原形(而且只能是动词原形)所构成的一种非限定性动词,但在有些情况下to可以省略。动词不定式在语法功能上可作主语、宾语、宾语补足语、
表语、定语和状语。


不定式的特殊句型对比:

1、不定式的特殊句型too…to…:
1)too…to 太…以至于…。
例如:He is too excited to speak. 他太激动了,说不出话来。  
        —Can I help you? 需要我帮忙吗?
        —Well, I'm afraid the box is too heavy for you to carryi t, but thank you all the same. 不用了。这箱子太重,恐怕你搬不动。谢谢。
2)如在too前有否定词,则整个句子用否定词表达肯定,too后那个词表达一种委婉含义,意为“不太”。
例如:It's never too late to mend. 改过不嫌晚。(谚语) 
3)当too前面有only, all, but时,意思是:非常…等于very。
例如:I'm only too pleased to be able to help you. 能帮助你我非常高兴。 
            He was but too eager to get home. 他非常想回家。
2、不定式的特殊句型so as to:
1)表示目的:它的否定式是so as not to do。
例如:Tom kept quiet about the accident so as not to lose his job. 汤姆对事故保持沉默是为了不丢掉他的工作。   
            Go in quietly so as not to wake the baby. 轻点进去,别惊醒了婴儿。
2)表示结果:
例如:Would you be so kind as to tell me the time? 劳驾,现在几点了。
3、不定式的特殊句型:Why not:
“Whynot+动词原形”表达向某人提出建议,翻译为:为什么不……?   干吗不……?
例如:Why not take a holiday?


不定式的用法:

1、不定式作补语:
1)有些有动词+宾语+不定式的结构。
例如:advise allow cause challenge command compel drive驱使
enable encourage forbid force impel induce instruct invite like/love order permit make let have want get warn persuade request send tell train urge 等。
例如:Father will not allow us to play on the street. 父亲不让我们在街上玩耍。      
            The officer ordered his men to fire. 长官命令士兵开火。
注意:有些动词如make,have,get,want等可用不定式作做宾补,也可用分词作宾补。现在分词表达主动,也表达正在进行,过去分词表达被动。
2)有些有动词+宾语+不定式的结构,不定式的动词往往是be,不定式一般可以省去。
例如:consider find believe think declare(声称) appoint guess fancy(设想) guess judge imagine know 等。
例如:We believe him to be guilty. 我们相信他是有罪的。 
            We know him to be a fool. 我们知道他是个笨蛋。(tobe不能省去)
典型例题:Charles Babbage is generally considered___the first computer.
                    A. to invent 
                    B. inventing 
                    C. to have invented 
                    D. having invented 
答案:C. 一般没有consider+宾语+be以外不定式的结构,也没有consider+宾语+doing的结构,排除A、B、D。consider用动词be以外的不定式作宾补时,一般要求用不定式的完成式,故选C。 3)有些动词可以跟there+to be的结构。例如:believe expect intend like love mean prefer want wish understand 等。
例如:We didn't expect there to be so many people there. 我们没料到会有那么多人在那里。
            You wouldn't want there to be another war. 你不至于想让另外一场战争发生吧。
2、不定式作主语:
不定式作主语,往往用it作形式主语,真正的主语不定式放至句子的后面。 
例如:It's so nice to hear your voice. 听到你的声音真高兴。
            It's necessary for you to lock the car when you do not use it. 不用车的时候,锁车是有必要的。 
            It's very kind of you to help us. 他帮助我们,他真好。 
            It seemed selfish of him not to give them anything. 他不给他们任何东西,这显得太自私了。
3、不定式作表语:
不定式可放在be动词后面,形成表语。
例如:My work is to clean the room every day. 我的工作是每天清扫房间。  
            His dream is to be a doctor. 他的梦想是成为一名医生。
4、不定式作定语:
不定式做定语通常要放在被修饰的词后,往往表示未发生的动作。
例如:I have a lot of work to do.我有许多事要做。   
            There was nothing to bring home that morning. 那天早上(他回家时)两手空空。
5、不定式作状语:
1)目的状语:常用结构为to do,only to do(仅仅为了), in order to do,so as to do,so(such)...asto…(如此…以便…)。
例如:He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。  
            I come here only to say good-bye to you. 我来仅仅是向你告别。
2)作结果状语,可以表示没有预料到的或事与愿违的结果,不定式要放在句子后面。
例如:I awoke to find my truck gone. 我醒来发现箱子不见了。  
            He searched the room only to find nothing. 他搜索了房间,没发现什么。
3)表原因:
例如:I'm glad to see you.  见到你很高兴。
            She wept to see the sight. 她一看到这情形就哭了。
4)表示理由和条件:
例如:He must be a fool to say so.
            You will do well to speak more carefully.
            You will do well to speak more carefully.


不定式知识体系:

 


不定式用法拓展:

1、用作介词的to:
to可以用作介词,也可用作不定式的标示。下面的to都用作介词:admit to  object to  beaccus to  med to  beused to  stick to  turn to开始 look forward to  be devoted to  pay attention to  contribute to apologize to devote oneself to

2、省去to的动词不定式:
1)情态动词(除ought外)后。
2)使役动词let,have,make后,感官动词see, watch, lookat, notice, observe, hear, listento, smell, feel, find等后。
注意:被动语态中不能省去to。
例如:I saw him dance. 我看见他跳舞。=He was seen to dance.  
           The boss made them work the whole night. 老板让他们整夜干活。 =They were made to work the whole night.
3)would rather,had better句型后:
4)Why…/why not…句型后:
5)help后可带to,也可不带to, help sb(to)do sth:
6)but和except后:
but前是实义动词do时,后面出现的不定式不带to。
比较:He wants to do nothing but go out. 他只想出去玩。  
            He wants to believe anything but to take the medicine. 除了吃这药,他什么都信。
7)由and, or和than连接的两个不定式,第二个to可以省去:
8)通常在discover, imagine, suppose, think等词后作宾补时,可以省去to be。
例如:He is supposed(to be)nice. 他应该是个好人。

3、动词不定式的否定式在不定式标志to前加上not。
例如:Tell him not to shut the window。让他别关窗。 
            She pretended not to see me when I passed by. 我走过的时候,她假装没看见。
4、It's for sb. 和It's of sb. 这样的句子中,由于表语形容词性质的不同,导致了不定式逻辑主语标志用for或of的区别。
1)for sb. 句型中的形容词一般为表示事物的特征特点,表示客观形式的形容词,如easy, hard, difficult, interesting, impossible等:
例如:It's very hard for him to study two languages. 对他来说学两门外语是很难的。
2)of sb句型中的形容词一般为表示性格,品德,心智能力,表示主观感情或态度的形容词,如good, kind, nice, clever, foolish, right。
例如:It's very nice of you to help me. 你来帮助我,你真是太好了。用for还是用of的另一种辨别方法:用介词for或of后面的逻辑主语作句子的主语,用介词前边的形容词作表语,造个句子。如果通顺用of,不通则用for。
例如:You are nice.(通顺,所以应用of)。  
            He is hard.(非所表达的意思,不通,因此用for。)


过去进行时的概念:

过去进行时表示在过去某一时刻或某一段时间内进行或发生的动作。其形式为was /were + V-ing。
常与表示过去的时间状语连用,如:last night, last Saturday等;或者与when, while, as引导的过去时间状语连用。


过去进行时的基本用法:  

1、主要表示过去某一时间正在进行的动作:
如:He fell asleep when he was reading. 他看书时睡着了。  
        We were expecting you yesterday. 我们昨天一直在等你。  
        He was playing while I was studying. 我在做功课时他在玩。  
2、过去进行时表示现在:  
用过去进行时表示现在主要是为了使语气委婉、客气。
如:I was wondering if you could give me a lift. 我不知你能否让我搭一下车。  
       We were hoping you would stay with us. 我们很希望你能跟我们住在一起。      
        How much did you want to spend, sir? 先生,您打算花多少钱?  
【注】一般过去时也有类似用法,但比较而言,用过去进行时显得更客气,更不肯定。  
3、过去进行时表示感情色彩:  
      与现在进行时相似,过去进行时也可表示满意、称赞、惊讶、厌恶等感情色彩,也通常与always, forever, continually等副词连用。
如:They were always quarrelling. 他们老是吵架。  
        The boy was continually asking questions. 这个男孩子老是问东问西的。  
4、动词be的过去进行时:  
      动词be的进行时也可表示过去一时的表现或暂时的状态。
如:He was friendly. 他很友好。(指过去长期如此)   
        He was being friendly. 他当时显得很友好。(指当时一时的表现)


过去进行时与一般过去时的区别:

(1)过去进行时强调动作在过去某时刻正在进行或持续,而一般过去时表示动作的完成。
如:He was writing his composition last night. 他昨晚在写作文。(不一定写完)
        He wrote his composition last night. 他昨晚写了一篇作文。(已经写完)
(2)表示过去的状态、感觉及心理活动的静态动词(如be, like, love, hate, fear, own, hear, see, know, want, notice)可用于一般过去时,但通常不用于进行时。
如:I hated it when a man spoke with his mouth full of food. 我讨厌人们说话时口里含着食物。
(3)一般过去时与always, constantly, forever, continually等连用,表示“过去经常性、习惯性的动作”;
而过去进行时与always, constantly, forever, continually等连用,表示动作的重复,常带有感情的色彩。
如: He always got up at six. 他过去总是六点起床。
          He was always thinking of his work. 他总是一心想到工作。
(4)有时过去进行时可以用来替换一般过去时,但一般过去时表示主语的行为是经过认真考虑的;
而过去进行时表示一种较随便或没有进行仔细考虑的行为。
如:I thought that he would agree with us. 我原以为它会同意我们的。
        I was thinking of persuading him to follow my advice. 我想到了要说服他接受我们的建议。

:下面几种情况不用一般过去时而要用过去进行时:
1、表示过去某一阶段暂时性的习惯动作时。
如:Tom was getting up at six o'clock every day that week. 汤姆那一周里每天都是六点钟起床。
2、与always连用表示赞美,厌烦等感情色彩时。
如:John was always coming to school late. 约翰上学总是迟到。
        LeiFeng was always doing good deeds for the people. 雷锋总是为人民做好事。
3、用来描写故事发生的情景时。
如:It was a dark night. The wind was blowing hard and the rain was falling heavily. A PLA man suddenly appeared on the river bank. He wanted to cross the river.
       那是一个漆黑的夜晚,风刮得很厉害,雨下得很大,一个解放军战士突然出现在河岸上,他想过河去。
4、when作并列连词,表示“(这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时。
如:I was taking a walk when I met him. 我正在散步,突然遇见了他。
       We were playing outside when it began to rain. 我们正在外边玩,这时下起雨来了。
5、go, come, leave, start, arrive等动词可用过去进行时表示过去将来的含义。
如:I was leaving for Wuhan that day. 那天我正要去武汉。
       She was coming later. 她随后就来。


主谓一致的概念:

谓语的数必须和主语的人称和数保持一致,这就叫主谓一致。


主谓一致的基本原则:

1)语法一致原则,即在语法形式上取得一致。例如,主语是单数形式,谓语动词也采取单数形式;主语是复数形式,谓语动词也采取复数形式。
例如:The students are very young.
            This picture looks beautiful.
2)意义一致原则,即从意义着眼处理一致关系。例如,主语形式虽是单数但意义是复数,谓语动词也采取复数形式;
而有些主语形式虽是复数但意义上看作单数,谓语动词也采取单数形式。
例如:The people in that country are fighting for independence.
            The crowd deeply respect their leader. 
            Three years in a strange land seems a long time.
3)就近原则,即谓语动词的单数或复数形式取决于最靠近它的词语。
例如:Neither hen or I am going to see the film tonight because we are busy.


几对容易混淆词组的一致用法:

1、由“this/thatkind/typeof+名词”作主语,谓语动词用单数形式;而由"these/thosekind/typeof+复数名词”作主语,谓语动词用复数形式。
例如:This kind of apples is highly priced.
            Those kind(s) of tests are good.
2、由“a number of,a totalo f,an average of+复数名词”作主语,谓语动词用复数形式;由“the number of,the total of,the average of+复数名词”作主语,谓语动词用单数形式。
例如:A number of students are waiting for the bus.
            The number of the students in this university is increasing yearly.
3、one of,the(only) one of的一致用法
例如:This is one of the books that have been recommended.
            This is the(only) one of the books that has been recommended.


 主谓一致用法点拨:

1、并列结构作主语谓语用复数:
如:Reading and writing are very important.
注意:当主语由and连结时,如果它表示一个单一的概念,即指同一人或同一物时,谓语动词用单数,and此时连接的两个词前只有一个冠词。
如:The iron and steel industry is very important to our life.
典型例题:
The League secretary and monitor___asked to make a speech at the meeting.
A. is
B. was
C. are
D. were
答案:B.
注:先从时态上考虑。这是过去发生的事情应用过去时,先排除A、C本题易误选D,因为The League secretary and monitor 好象是两个人,但仔细辨别,monitor前没有the,在英语中,当一人兼数职时只在第一个职务前加定冠词。后面的职务用and相连。这样本题主语为一个人,所以应选B。

2、主谓一致中的靠近原则:
1)当there be句型的主语是一系列事物时,谓语应与最邻近的主语保持一致。
例如:There is a pen, a knife and several books on the desk.
            There are twenty boy-students and twenty-three girl-students in the class.
2)当either…or…与neither…nor,连接两个主语时,谓语动词与最邻近的主语保持一致。
如果句子是由here, there引导,而主语又不止一个时,谓语通常也和最邻近的主语一致。
例如:Either you or she is to go. 
            Here is a pen, a few envelops and some paper for you.

3、谓语动词与前面的主语一致:
当主语后面跟有with, together with, like, except, but, no less than, as well as等词引起的短语时,谓语动词与前面的主语一致。
例如:The teacher together with some students is visiting the factory. 
            He as well as I wants to go boating.

4、谓语需用单数:

1)代词each和由every, some, no, any等构成的复合代词作主语,或主语中含有each,every,谓语需用单数。
例如:Each of us has a tape-recorder. 
2)当主语是一本书或一条格言时,谓语动词常用单数。
例如:The Arabian Night is a book known to lovers of English. 
3)表示金钱,时间,价格或度量衡的复合名词作主语时,通常把这些名词看作一个整体,谓语一般用单数。(用复数也可,意思不变。)
例如:Three weeks was allowed for making the necessary preparations.
            Ten yuan is enough.

5、指代意义决定谓语的单复数:
1)在代词what, which, who, none, some, any, more, most, all等词的单复数由其指代的词的单复数决定。
例如:All is right. (一切顺利。)
            All are present. (所有人都到齐了。)
2)集体名词作主语时,谓语的数要根据主语的意思来决定。
例如:family, audience, crew, crowd, class, company, committee等词后用复数形式时,意为这个集体中的各个成员,用单数时表示该个集体。
例如:His family isn't very large. 他家不是一个大家庭。
            His family are music lovers. 他的家人都是音乐爱好者。
但集合名词people, police, cattle, poultry等在任何情况下都用复数形式。
例如:Are there any police around?
3)有些名词,如variety, number, population, proportion, majority等有时看作单数,有时看作复数。
A number of+名词复数+复数动词。 The number of+名词复数+单数动词。
例如:A number of books have lent out.
            The majority of the students like English.

6、与后接名词或代词保持一致:

1)用half of, part of, most of, a portion of等词引起主语时,动词通常与of后面的名词,代词保持一致。
例如:Most of his money is spent on books.
            Most of the students are taking an active part in sports.
2)在一些短语,如many a或more than one所修饰的词作主语时,谓语动词多用单数形式。
但由more than…of作主语时,动词应与其后的名词或代词保持一致。
例如:Many a person has read the novel. 许多人都读过这本书。
            More than 60percent of the students are from the city. 百分之六十多的学生都来自这个城市


主谓一致知识体系:

 


主谓一致用法拓展:

1)当everyone,everybody,noone,nobody,anyone,anybody,someone,somebody,everything,anything,something,nothing等用作主语时,其相应的代词一般用单数形式。
例如:If anybody calls, tell him that I'm out.
            Something strange happened, didn't it? 
2)人称代词与名词的呼应:人称代词I(me),he(him),she(her),it(it) 都是代替前面的单数名词,而they(them),we(us)则是代替复数名词的,you既可以代表单数,也可以代表复数。但表示泛指的时候,用he或one来表示。
例如:If a young person enters a classical music field only for money, he is in the wrong profession. 
3)物主代词与名词的呼应:my,our,his,her,its,their要与代替的名词在数上一致。
例如:The welfare department,as well as the other social services,will have its budget cut.
4)反身代词与其所代成分间的呼应。
例如:Many primitive people believed that by eating ananimal they could get some of the good qualities of that animal for themselves.
5)指示代词与所代名词间的呼应:this和that指代单数名词或不可数名词,these和those指代复数名词(those还可以用作先行词,引导定语从句,表示“那些人”)。
例如:She invited all those who had been her former colleagues.
6)much和muchof后接不可数名词,而many和manyof后接可数名词的复数。
例如:There is not much coal left.
            A great many of the houses were knocked down by the earthquake.
7)表示量的词后面有的接可数名词,有的接不可数名词。
接可数名词的有:a number of,a rangeof,a series of十复数名词;
接不可数名词的有:a great deal of,an amount of十不可数名词;
既可接可数又可接不可数名词的有:a lot of,a variety of。
例如:1.The government attached a great deal of importance to education.
            2.Quiteanumberofwomenappliedforthisjob.
            3.The college library has avariety of books.
            4.An apple is avariety off ruit.
     


虚拟语气的概念:

虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实,或与事实相反。在条件句中的应用条件句可分为两类,一类为真实条件句,一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。


虚拟语气在条件句中的应用:

一、真实条件句:
真实条件句真实条件句用于陈述语气,假设的情况可能发生,其中if是如果的意思。
时态关系句型:条件从句:一般现在时;主句:shall/will+动词原形
如:If he comes, he will bring his violin.
典型例题:
The volleyball match will be put off if it___.
A. will rain
B. rains
C. rained
D. is rained
答案:B。真实条件句主句为将来时,从句用一般现在时。
注意:1)在真实条件句中,主句不能用be going to表示将来,该用shall, will。
如: (错) If you leave now, you are never going to regret it. 
         (对) If you leave now, you will never regret it.
            2)表示真理时,主句谓语动词便不用shall(will)+动词原形,而直接用一般现在时的动词形式。

二、非真实条件句:
非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。 
1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
句型:从句:一般过去时;主句:should(would)+动词原形
如:If they were here, they would help you.
b.表示于过去事实相反的假设。
句型:条件从句:过去完成时;主句:should(would)have+过去分词
如:If she had worked harder, she would have succeeded.
        The rice would not have been burnt if you had been more careful.
        If my lawyer had been here last Saturday, he would have prevented me from going.
c.表示对将来的假想句型:
条件从句:一般过去时;主句:should+动词原形
                   从句: were+不定式;主句:would+动词原形 should+动词原形
如:If you succeeded, everything would be all right.
        If you should succeed, everything would be all right.
        If you were to succeed, everything would be all right.

三、混合条件句:
主句与从句的动作发生在不同的时间,这时主,从句谓语动词的虚拟语气形式因时间不同而不同,这叫做混合条件句。
如:If you had asked him yesterday, you would know what to do now. (从句与过去事实相反,主句与现在事实相反。)
        If it had rained last night (过去), it would be very cold today (现在).


比较if only与only if:

only if表示“只有”;if only则表示“如果……就好了”。If only也可用于陈述语气。
如:I wake up only if the alarm clock rings. 只有闹钟响了,我才会醒。
        If only the alarm clock had rung. 当时闹钟响了,就好了。
        If only he comes early. 但愿他早点回来。 
It is(high) time that It is(high) time that 后面的从句谓语动词要用过去式或用should加动词原形,但should不可省略。
如:It is time that the children went to bed.
        It is high time that the children should go to bed. 
need“不必做”和“本不该做"”
didn't need to do表示:过去不必做某事,事实上也没做。
needn'thavedone表示:过去不必做某事,但事实上做了。
如:John went to the station with the car to meet Mary, so she didn't need to walk back home.
        约翰开车去车站接玛丽,所以她不必步行回家了。   
        John went to the station with the car to meet Mary, so she needn't have walked back home.
        约翰开车去车站接玛丽,所以她本不必步行回家了。(Mary步行回家,没有遇上John的车。)
典型例题:
There was plenty o ftime. She___.
A. mustn't have hurried
B. couldn't have hurried
C. must not hurry
D. needn't have hurried
答案:D。needn't havedone. 意为"本不必",即已经做了某事,而时实际上不必要。 Mustn't have done用法不正确,对过去发生的事情进行否定性推断应为couldn't have done,“不可能已经”。must not do不可以(用于一般现在时)


特殊的虚拟语气词should 的用法:

1)It is demanded/necessary/a pity+that…结构中的主语从句的谓语动词要用should加动词原形,should可省略。
句型:
如:It is suggested that we(should) hold a meeting next week.
        It is necessary that he(should) come to our meeting tomorrow.
2)在宾语从句中的应用在表示命令、建议、要求等一类动词后面的从句中。order, suggest, propose, require, demand, request, insist, command, insist+(should)do
如:I suggest that we(should) hold a meeting next week. 
       He insisted that he(should) be sent there.
注意:如suggest, insist不表示“建议”或“坚持要某人做某事时”,即它们用于其本意“暗示、表明”、“坚持认为”时,宾语从句用陈述语气。
如:The guard at gate insisted that everybody obey the rules.
判断改错:(错)You pale face suggests that you(should) be ill. 
                    (对)Your pale face suggests that you are ill.
                    (错)I insisted that you(should) be wrong.
                    (对)I insisted that you were wrong.
3)在表语从句,同位语从句中的应用在suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气,即(should)+动词原形。
如:My idea is that we(should) get more people to attend the conference.
        I make a proposal that we(should) hold a meeting next week.


虚拟语气知识体系:

条件从句中的谓语动词形式 主句中的谓语动词形式
与过去事实相反 had+过去分词 should/would+have+过去分词
与现在事实相反 过去式 should/would+动词原形
与将来事实相反 1、过去式 should/would+动词原形
2、should+动词原形 should/would+动词原形
3、were to+动词原形 should/would+动词原形

虚拟条件句的倒装:

虚拟条件句的从句部分如果含有were, should, 或had, 可将if省略,再把were, should或had移到从句句首,实行倒装。
如:Were they here now, they could help us.=If they were here now, they could help us.    
        Had you come earlier, you would have met him=If you had come earlier, you would have met him.    
        Should it rain, the crops would be saved.=Were it to rain, the crops would be saved.
注意:在虚拟语气的从句中,动词“be”的过去时态一律用“were”,不用was,即在从句中be用were代替。
如:If I were you, I would go to look for him.  如果我是你,就会去找他。
        If he were here, everything would be all right. 如果他在这儿,一切都会好的。
典型例题:_____to do the work, I should do it some other day. 
                   A. If were I
                   B. I were  
                   C. Were I  
                   D. Was I
答案:C. 在虚拟条件状语中如果有were, should, had这三个词,通常将if省略,主语提前,变成were, should, had+主语的形式。
但要注意,在虚拟条件状语从句中,省略连词的倒装形式的句首不能用动词的缩略形式。如我们可说Were I not to do.,而不能说Weren't I to do。