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高中三年级英语

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  • 单选题
    I _____ tell you the truth _____ you promise to keep it as a secret.
    [     ]

    A. will; as if
    B. will; so that
    C. won't; unless
    D. won't; because
    本题信息:2011年专项题英语单选题难度一般 来源:姜雪
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本试题 “I _____ tell you the truth _____ you promise to keep it as a secret.[ ]A. will; as ifB. will; so thatC. won't; unlessD. won't; because” 主要考查您对

从属连词

情态动词

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。
  • 从属连词
  • 情态动词

从属连词的概念:

连词用于引导从句以形成句子的一部分或修饰句子的构成要素的叫作从属连词。


英语从属连词用法分类详解:

1、引导时间状语从句的从属连词:
 (1)表示“当…时候”或“每当”的时间连词。主要的when, while, as, whenever:
如:He jumped up when the phone rang. 电话铃响时他吓了一跳。 
        We listened while the teacher read. 老师朗读时我们听着。
        The phone rang just as I was leaving. 我正要离开,电话铃就响了起来。
(2)表示“在…之前(或之后)”的时间连词。主要的有before, after:
如:Turn the lights off before you leave. 离开前请关灯。
        He started the job soon after he left the university. 他大学毕业后就开始做这份工作。
(3)表示“自从”或“直到”的时间连词。主要的有since, until, till:
如:He has lived here since he got married. 他结婚后就一直住在这儿。
        Most men worked until[till] they're 65. 大多数男人工作到65岁。
(4)表示“一…就”的时间连词。主要的有as soon as, the moment, the minute, the second, the instant, immediately, directly, instantly, once, no sooner…than, hardly…when等:
如:Tell him the news as soon as you see him. 你一见到他就把这消息告诉他。
        I recognized her the moment(that) I saw her. 我一看到她就认出她来了。
        I want to see him the minute(that) he arrives. 他一到来我就要见他。
        I went home directly I had finished work. 我一干完活就回家了。
       Once he arrives, we can start. 他一来我们就可以开始。
(5)表示“上次”、“下次”、“每次”等的时间连词。主要的有every time(每次),each time(每次),(the) next time(下次),any time(随时),(the) last time(上次),the first time(第一次):
如:Last time I saw him, he looked ill. 上次我见到他的时候,他好像有病。
        Next time you're in London come and visit us. 你下次来伦敦过来探望我们。
        Do look me up next time you're in London. 你下次到伦敦来,一定来找我。
        Every time I call on him, he is out. 我每次去访问他,他都不在。
       You can call me any time you want to. 你随时都可以给我打电话。
【注】every time,each time,any time前不用冠词,(the)next time, (the)last time中的冠词可以省略,而the first time中的冠词通常不能省略。
2、引导条件状语从句的从属连词:
这类连词主要有if, unless, as[so] long as, incase等:
如:If anyone calls tell them I'm not at home. 要是有人打电话来,就说我不在家。
        You will fail unless you work hard. 你若不努力就会失败。
        As[So] long as you need me, I'll stay. 只要你需要我,我就留下。
        In case I forget, please remind me about it. 万一我忘记,请提醒我一下。
【注】在条件状语从句中,通常要用一般现在时表示将来意义,而不能直接使用将来时态。不过,有时表示条件的if之后可能用will,但那不是将来时态,而是表示意愿或委婉的请求(will为情态动词):
如:If you will wait a moment, I'll fetch the money. 请等一下,我就去拿钱。
3、引导目的状语从句的从属连词:
主要有in order that, so that, in case, for fear等:
如:We used the computer in order that we might save time. 我们使用计算机是为了节约时间。
        Speak clearly so that they may understand you. 说清楚,以便让他们能明白你的意思。
        Be quiet in case you should wake the baby. 安静些,免得把婴儿吵醒。
        He is working hard for fear he should fail. 他努力工作以免会失败。
4、引导结果状语从句的从属连词:
主要的有so that, so…that, such…that等:
如:We're all here now, so that the meeting can begin at last. 我们现在都到齐了,终于能开会了。
        It's so difficult a question that none of us can answer it. 那是一个很难的问题,我们没有一个人能回答。
        He shut the window with such force that the glass broke. 他关窗户用力很大,结果玻璃震破了。
【注】so that中的that在口语中通常可以省略。
5、引导原因状语从句的从属连词:
主要的有because, as, since, seeing(that), now(that), considering(that)等:
如:He couldn't got to school because he had a cold. 他因患感冒而未能去上学。
        Since everybody is here, let's begin our discussion. 大家都到了,我们就开始吧。
        Seeing that it is 8o'clock, we'll wait no longer. 由于时间已到8点,我们将不再等了。
        Now that you are here, you'd better stay. 你既然来了,最好还是留下吧。
6、引导让步状语从句的从属连词:
主要有although, though, eventhough, even if, while, however, whatever, whoever, whenever, wherever等:
如:Although[Though] he is poor, he is well contented. 他虽穷却能知足常乐。
        Though[Even though] it's hard work, I enjoy it. 尽管是苦活,但我乐意干。
        Even if you don't like wine, try a glass of this. 即使你不喜欢喝酒,也尝尝这杯吧。
7、引导方式状语从句的从属连词:
主要有as, like, as if, as though, the way等:
如:Do it as[like] he does. 像他那样做。
        He behaved as if nothing had happened. 他装作若无其事的样子。
        They treat me as though I were a stranger. 他们待我如陌生人。
        Nobody else loves you the way(=as) I do.没有人像我这样爱你。
8、引导地点状语从句的从属连词:
主要有where, wherever, everywhere等:
如:There were lots of parks where I lived. 我住的地方有许多公园。
        Sit wherever you like. 你想坐在那儿就坐在那儿。
        Everywhere they went, they were warmly welcomed. 他们每到一个地方都受到热烈欢迎。
9、引导比较状语从句的从属连词:
主要有than和as…as:
如:It's easier than I thought. 这比我想像的要容易。
        They are as often wrong as they are right. 他们错对各半。
10、引导名词性从句的从属连词:
主要有that, if, whether:
如:It is clear enough what he meant. 他是什么意思很清楚。 
       Your greatest fault is that you are careless. 你最大的缺点是粗心大意。
       Whether it will do us harm remains to be seen.是否对我们有害还要看一看。
       She didn't say if he was still alive. 她没说他是否还活着。


从属连词知识体系:

 


用作从属连词的六类名词结构:

英语中有些名词结构可用作从属连词,用以引导状语从句,且主要是时间状语从句。这类结构归纳起来有以下六类:
一、the+瞬间名词:
其中的瞬间名词主要包括moment, minute, instant, second等,其意为“一……就……”,相当于as soon as。
如:The minute he saw her he fell in love. 他对她一见倾心。  
Telephone me the moment(that) you get the results. 你一有结果,马上给我打电话。 
I was so tired that I fell asleep the instant I closed my eyes. 我很累,一合上眼就睡着了。
Sheputdownthereceiverthesecondsherecognizedmyvoice.她一听出是我的声音,马上就放下电话听筒。
注:其中的瞬间名词后可接that,也可省略。另外,有的个别副词(如directly/immediately等)也可表示类似意思。
如: Immediately the meal was over,he switchedon the radio.饭一吃完他就把收音机打开。

二、the+季节名词:
其中的季节名词包括spring,summer,autumn,winter,其意为“在……的那年春天、夏天、秋天、冬天。
如:His wife left him thes pring he went abroad.在他出国的那年春天,他的妻子离开了他。
He sold his house and went to the souththe summer he lost hisjob.在他失业的那年夏天,他卖掉房子去了南方。
He was sentto prison the winter his third daughter was born.在他第三个女儿出生的那年冬天,他被关进了监狱。
She got married the autumn she graduated from college.她大学毕业的那年秋天就结婚了。

三、the+时间名词:
其中的时间名词主要包括hour,day,night,week,month,season,year等,其意为“在……的时候、那天、那个晚上、那周、那个月、那个季节、那年”。
如: The hour he wa sin her office,he felt very sad.当他在她办公室的时候,他感到很伤心。
The day here turned home,his father was already dead.他回家的那一天,他的父亲已经死了。
The night I wenttoseeher,shehadleftforBeijingtoattendanimportantmeeting.就我去看她的那个晚上,她到北京去开一个重要的会议了。
Mr Smith didn't go to work the week his wife was ill.史密斯先生在他妻子生病的那个星期没去上班。
They ear helivedinthecountry,he learned alot.他在乡下呆的那一年,他学到了不少东西。

四、the+序数词+time
其中的序数词包括first,second,third,fourth等,其意为“当第几次……的时候”。
如: My girlfriend beat me at pokert he first time weplayed.我头一次和女朋友打扑克,她就把我赢了。
These cond time I saw her,she looked like an old woman.我第二次见到她时,她看上去像一个老太婆。
The third time I went there,I found all of them had left and the offices were all empty.我第三次去那儿时,我发现他们都离开了,所有的办公室都是空的。
注:
1.next,last也具有类似序数词的性质,因此也具有以上用法。
如: Nexttimeyoucomein,pleaseclosethedoor.下次你进来,请关门。
Thelasttimewetalkedhesaidheneededanothertwodays.上次我们谈话时他说他还需要两天。
2.thefirsttime,thesecondtime,thethirdtime等用作连词引导时间状语从句时,其前通常要有定冠词,而(the)nexttime,(the)lasttime引导状语从句时,其中的冠词可以省略,如下面这道上海高考题,其答案是C,不是A:
I though ther nice and honest______Imether.
A.first time  B.fo rthe first time C.the first timeD.by the first time

五、不定代词+time
其中的不定代词主要包括each,every,any等。
如:Every time I ringher,the phone is engaged.我每次给她打电话,电话都占线。
Every time I see him he either wants to tell me his trouble or borrow some money.每次我见到他,他不是向我诉苦,就是要向我借钱。
He felt nervous each times he spoke to him.每次她和他讲话,他都感到紧张。
AnytimeyoucometoLondondolookmeup.你无论什么时候到伦敦来,一定要来看我。
注意:everytime,eachtime,anytime用作连词引导状语从句时其前习惯上不用冠词,它与the first time,these cond time,the third time等引导时间状语从句时其前必须要用定冠词不同。

六、其他名词结构
以上归纳的名词结构均用于引导时间状语从句,有些其他结构还可引导其他性质的状语从句,如the way可用于引导方式状语从句,表示“像……一样”。如:
The didn’t do it the way we do now.那时他们不像我们现在这样行事。
Joyce looked at me the way alotof girls did.乔伊丝像许多姑娘那样瞧着我。
注:这样用的theway与as用法相似。
如:Hold itin both hands,the way(=as)Mummy does.用两只手捧住,像妈妈那样。


情态动词的概念:

情态动词表示说话人对某一动作或状态的态度。


几组词的辨析

1、need和dare的用法:
need和dare既可用作情态动词,也可用作实义动词。用作情态动词时,主要用于否定句和疑问句。用作实义动词时,可用于各种句式。
(1)用作情态动词:
 如:—Need I come? 我需要来吗?
         —Yes, you must. 需要。
         You needn′t telephone him now. 你现在不必打电话给他。 
         I don′t think you need worry. 我想你不必发愁。 
         She dare not go out alone at night. 她晚上不敢一个人出去。
         How dare you say I′m unfair? 你竟敢说我不公平?
         Not one of them dared mention this.他们谁也不敢提这件事。
(2)用作实义动词:
如:You don′t need to do it yourself. 你不必亲自做这件事。
        We need to tell them the news. 我们需要把这消息告诉他们。
        The table needs painting(to be painted.). 桌子需要油漆一下。
        We should dare to give our own opinion.我们要敢于提出自己的观点。
        He did not dare(to) look up. 他不敢抬头看。
        I dare day he′ll come again. 我想他会再来的。
2、can和be able to:
(1)情态动词can只有两种时态形式,现在式can和过去式could,而be able to有多种时态形式。
如:Mary can play the piano. She has been able to play it since she was 5. 玛丽会弹钢琴。她五岁起就会弹了。
(2)用在过去时中,could经常表示能够做某事,事实上不一定去做,而was∕were able to则表示“过去做成了某事”。在否定句中两者可通用。
如:He could swim across the English Channel. But he didn′t feel like it that day.
        他能游过英吉利海峡,但那天他不想游。
        Yesterday I was able to get home before the heavy rain. 昨天我在下大雨前赶到了家里。
3、must和have to:
must表示主观意志,而have to表示由于客观因素不得不做某事。must没有过去式,除在间接引语中可用于表示过去时间,在直接引语中表示过去时间应该用had to代替。
如:I told her that she must give up smoking. 我叫她必须戒烟。
        We had to get everything ready that night. 我们那晚得把一切准备就绪。
4、would和used to:
(1)usedto表示过去与现在或过去某时与后来的情况有不同,而would只表过去的情况。
如:People used to think that the earth was flat.  过去人们认为地球是平的。(现在人们不这么认为。) 
        She would go out for a walk in the morning when she was in the country.
        在乡下时,她总是在早晨去散会儿步。(可能现在仍有散步的习惯。)
(2)used to可表示过去的习惯动作和经常的情况,而would只表示过去的习惯动作。
如:He used to∕would smoke while writing. 过去他写东西时常抽烟。
        She used to be fat. 她过去很胖。


情态动词的基本用法:

1、can(could):
1)表示能力,could主要指过去时间。
如:Two eyes can see more than one. 两只眼比一只眼看得清。
        Could the girl read before she went to school? 这女孩上学前能识字吗?
2)表示可能(理论上或是逻辑判断上)。
如:The temperature can fall to–60℃, that is 60℃ below freezing. 气温可降至-60℃,也就是零下60℃。
        He can′t(couldn′t) have enough money for a new car. 他不可能有足够的钱买新车。  
        You mustn′t smoke while you′re walking around in the wood. You could start a fire. 
        在林子里走时勿吸烟,那样可能会引起火灾。
3)表示允许。
如:Can I have a look at your new pen? 我可以看一看你的新钢笔吗?
        He asked whether he could take the book out of the reading-room. 他问他可不可以把书带出阅览室。
4)表惊异、怀疑、不相信等态度。主要用于否定句、疑问句或感叹句中。
如:Where can(could) they have gone to? 他们会去哪儿了呢?
        He can′t(couldn′t) be over sixty. 他不可能超过六十岁。
        How can you be so careless? 你怎么这么粗心?
5)比较委婉客气地提出问题或陈述看法。
如:Can(Could) you lend me a hand? 帮我一把好吗?
        I′m afraid we couldn′t give you an answer today. 恐怕我们今天不能给你答复。
2、may(might):
1)表允许,might可以指过去时间,也可指现在时间,语气更委婉。
如:You may take what ever you like. 你喜欢什么就拿什么。
        He told me that I might smoke in the room. 他告诉我可以在房间里抽烟。
        May(Might) I ask for a photo of your baby? 我可以要一张你宝宝的照片吗?
在回答以may引起的问句时,多避免用这个词,而用其它方式:
如:Yes, please./Certainly. /Please don′t./You′d better not./No, you mustn′t.等,以免显得太严峻或不客气。
2)表可能(事实上)。可以指过去时间,也可以指现在时间,但语气更加不肯定。
如:He may be at home. 他可能在家。
        She may not know about it. 她可能不知道这件事。
        He was afraid they might not agree with him. 他担心他们可能不同意他的意见。 
如:They might be having a meeting, but I′m not sure. 他们有可能在开会,不过我不肯定。
3、must:
1)表示义务。意为“必须”(主观意志)。
如:We must do everything step by step. 我们一切都必须循序渐进地做。
        You mustn′t talk to her like that. 你不可能那样对她说话。
         —Must we hand in our exercise-books now? 我们现在就要交练习本吗?
         —No, you needn′t./No, you don′t have to.不必。(这种情况下,一般不用mustn′t)
2)表示揣测。意为“想必、准是、一定”等,只用于肯定句。
如:He must be ill. He looks so pale. 他准是病了。他的脸色苍白。
如:She′s wearing a diamond necklace. She must have a lot o fmoney. 她戴着钻石项链,一定很有钱。
4、shall:
1)表征询意见,用于第一、第三人称疑问句。
如:Shall I get you some tea? 我给你点茶好吗?
        Shall the boy wait outside? 让那男孩在外面等吗?
        What shall we do this evening? 我们今晚做什么?
2)表说话人的意愿,有“命令、允诺、警告、决心”等意思,用于第二、第三人称陈述句。
如:You shall do as I say. 按我说的做。(命令)
        You shall have my answer tomorrow. 你明天可以得到我的答复。(允诺)
        He shall be sorry for it one day, I tell you.有一天他会后悔的,我告诉你。(警告)
如:Nothing shall stop us from carrying out the plan.什么也不能阻止我们执行这项计划。(决心)
5、will:
1)表意愿,用于各种人称陈述句。
如:I will do anything for you. 我愿为你做任何事。
        None is so blind as those who won′t see. 不愿看的人眼最瞎。
        If you will read the book, I′ll lend it to you. 如果你愿意读这本书,我会把它借给你。
2)表请求,用于疑问句。
如:Will you close the window? It′s a bit cold. 请你把窗户关上好吗?有点冷。
        Won′t you drink some more coffee? 再来一点咖啡好吗?
3)表示某种倾向或习惯性动作。
如:Fish will die out of water. 鱼离开水就不能活。
        The door won′t open. 这门打不开。
        The boy will sit there hour after hour looking at the traffic go by. 
        那男孩常常坐在那里好几个钟点,看着车辆行人通过。
6、should:
1)表义务。意为“应该”(某件事宜于做),用于各种人称。
如:You should be polite to your teachers. 你对老师应该有礼貌。
        You shouldn′t waste anytime. 你不应该浪费时间。
2)表推测,意为“想必一定、照说应该、估计”等。
如:The film should be very good as it is starring first-class actors. 这部新电影是一流演员主演的,估计拍得很好。       
        They should be home by now. 照说他们现在应当已经到家了。
7、would:
1)表意愿。
如:They would not let him in because he was poorly dressed. 他们不让他进去因为他衣着破旧。 
        I said I would do anything for you. 我说过我愿意为你做任何事。
2)表委婉地提出请求、建议或看法。
如:Would you like another glass of beer? 再来杯啤酒好吗?
        Would you mind cleaning the window? 请把窗户擦一下好吗?
        They wouldn′t have anything against it. 他们不会有什么反对意见。
3)表过去反复发生的动作或过去的一种倾向。
如:Every time she was in trouble, she would go to him for help. 她每遇到麻烦都会向她求助。
8、ought to:
1)表义务,意为“应该”(因责任、义务等该做),口气比should稍重。
如:You are his father. You ought to take care of him. 你是他父亲,应当管他。
        You oughtn′t to smoke so much. 你不应该抽这么多烟。
2)表推测,暗含很大的可能,语气较弱。
如:Han Mei ought to know his telephone number. 韩梅该知道他的电话号码。
        There′s a fine sun set; it ought to be a fine day tomorrow. 今天有晚霞,明天应该是个好天。
9、used to:
表示过去的习惯动作或状态,现在不复发生或存在。疑问式和否定式有两种。
如:He used to live in the countryside, but now he lives in the city. 他过去住在乡下,现在住在城里。
        There used to be a building at the street corner, but it has been pulled down. 街道拐角处过去有座楼房,现在拆了。
        I usedn′t (didn′t use) to smoke. 我过去不抽烟。
        Used you(Did you use) to go to school on foot? 你过去常步行去学校吗?

情态动词的其他用法:

首先它是动词,而且不同于行为动词,行为动词表示的是可以通过行为来表达的动作(如写,读,跑),而情态动词只是表达的一种想法(如能,也许,敢)。
用法是:情态动词+行为动词原形:
句:I can read this sentence in English. 我能用英语读这句话。
情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。
如:We can be there on time tomorrow. 我们明天能按时去那儿。
        May I have your name? 我能知道你的名字吗?
        Shall we begin now? 我们现在就开始吗?
        You must obey the school rules. 你必须遵守校规。


情态动词知识体系:

 


情态动词表推测的三种句式:

1、在肯定句中一般用must(一定),may(可能),might/could(也许,或许)。
如:He must/may/might know the answer to this question? 他一定/可能/也许知道这个问题的答案。 
        It is cold in the room. They must have turned off the heating. 屋里很冷,他们肯定把暖气关了。
2、否定句中用can't/couldn't (不可能), may not/might not(可能不)。
如:It can't/couldn't be the headmaster. He has gone to America.  这不可能是校长,他去美国了
        He may not/might not know the scientist. 他也许不认识那位科学家。
3、疑问句中用can/could(能……?)。
如:Could he have finished the task? 他可能把任务完成了吗?
        Can he be at home now? 他现在能在家吗?
注:以上三种句式中情态动词的语气按程度都是依次递减的。Might, could并非may, can的过去式,而表示语气较为委婉或可能性较小。

情态动词表推测的三种时态:

1、对将来情况的推测,用“情态动词+动词原形”。
如:She must/may/might/could arrive before 5.  5:00前她一定/可能/也许到。
        She must/may/might/could walk miles and miles among the hills without meeting anyone.
        她一定/可能/也许会在山里一连走好几英里而遇不到一个人。
2、对现在或一般情况的推测,用“情态动词+be”,“情态动词+bedoing”或“情态动词+动词原形”。
如:He must/may/might/could be listening to the radio now. 他一定/可能/也许正在听收音机。
        He can't(couldn't)/may(might) not be at home at this time. 这个时候他不可能/可能不在家。
        Mr. Bush is on time for everything. How can(could) he be late for the opening ceremony?
        布什先生一向准时,这次开幕式他怎么可能迟到呢?
3、对过去情况的推测,用“情态动词+have+过去分词”。
如:It must/may/might/ could have rained last night. The ground is wet. 地湿了,昨晚肯定/可能/也许下雨了。
        The door was locked. He can(could) not/may(might) not have been at home. 门锁着,他不可能/可能不在家。       
        Can/Could he have gotten the book?难道他找到书了吗?
:情态动词should/ought to表推测时,意为“想必会,理应……”但与“have+过去分词”连用时,则又可构成虚拟语气意为“本应该做某事却没做”。
如:It's seven o'clock. Jack should/ought to be here at any moment.
        现在七点钟了,杰克理应随时到达。(推测)    
        She should/ought to have attended your birthday party, but she had to look after her mother in hospital.(虚拟)
        她本该出席你的生日晚会的,可是她得在医院照顾她妈妈。 
        Tom should not/ought not to have told me your secret, but he meant no harm.(虚拟)
        汤姆本不该告诉我你的秘密,可是他并无恶意。