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初中二年级英语

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  • 句型转换
    句型转换。
    1. They look at themselves in the mirror. (一般疑问句)
    _____ they _____ at themselves in the mirror?
    2. She cut herselfwith the scissors. (对划线部分提问)
    _____ _____ she _____ herself?
    3. You were a student, your friend was, too. (同义句)
    You were a student, _____ _____ your friend.
    4. She's told me many things about you. (反意疑问句)
    She's told me many things about you, _____ _____?
    5. They were good at spelling. (同义句)
    They _____  _____  _____ spelling.
    本题信息:2012年同步题英语句型转换难度一般 来源:段秀玲
  • 本题答案
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本试题 “句型转换。1. They look at themselves in the mirror. (一般疑问句)_____ they _____ at themselves in the mirror?2. She cut herselfwith the scissors. (...” 主要考查您对

疑问副词

副词

实义动词的过去式

实义动词

助动词的过去式

介词

一般疑问句

反意疑问句

倒装句

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。
  • 疑问副词
  • 副词
  • 实义动词的过去式
  • 实义动词
  • 助动词的过去式
  • 介词
  • 一般疑问句
  • 反意疑问句
  • 倒装句
疑问副词:
用来引导特殊疑问句,表示时间,地点,方式,原因等。
常见的有:when,where,how,why等。

疑问副词的用法:
1.疑问副词是问何时、何地、如何、因何的副词,主要有when, where, how, why。

2.疑问副词用在句首。
How long have you been staying in America?
你在美国待多久了?

3.疑问副词在句中引导名词子句。
I want to know where she has gone.
我想知道她去哪里了。

4.疑问副词后接不定词构成的名词片语,在句中可以作主词、受词或主词补语。
How to solve the problem gives him a bad headache.
如何解决这个问题使他伤透脑筋。
(How to solve the problem作主词。)
I don't know how to answer the question.
我不知道如何回答这个问题。
(how to answer the question作受词。)
The patient is in urgent need the medicine, but the problem is where to get it.
这个病人急需这种药,但问题是哪里能找到。
(where to get it作主词补语。)

5.疑问副词引导的名词子句可作主词、受词或主词补语。
When we are to start the competition hasn't fixed yet.
我们什么时候开始比赛还没有定下来。
(When we are to start the competition作主词。)
She asked her husband where he had been.
她问她丈夫去哪里了。
(where he had been 作受词。)
The question is when we can finish our work.
问题是我们何时能完成我们的工作。
(when we can finish our work作主词补语。)


疑问代词与疑问副词的区别:
1. 疑问代词做对陈述句的主语,宾语或定语提问,即做句子的主语,宾语或定语,如what, who/ whom, whose.
eg. Who is talking ? What can you see?
Whose shirt is this?
2.疑问副词对时间,地点,方式等状语提问,如when, where, how 等.
eg. When is your birthday? Where are you going?
How do you know?
常见的疑问代词:what  who  which  whom(只做宾语)
疑问副词:how  where  when
还有whether是疑问连接词。
副词:
是一种用来修饰动词、形容词、全句的词,说明时间、地点、程度、方式等概念的词。副词是一种半虚半实的词。
副词可分为:地点副词、方式副词、程度副词、疑问副词和连接副词。
副词连用顺序:程度副词+方式副词+地点副词+时间副词。

副词分类:
1、时间副词有三类:always, often, usually, sometimes, never, ever, hardly等一般位于系动词、情态动词和助动词之后,实之前义动词
1)表示发生时间的副词:
It’s beginning to rain now!  现在开始下雨了!
2)表示频繁程度的副词,也称频度副词always, often, usually, sometimes, never, ever, hardly等一般位于系动词、情态动词和助动词之后,实之前义动词:
She often changes her mind.  她常改变主意。
3)还有一些其他表示时间的副词:
 He has just had an operation. 他刚动过手术。
2、地点副词:
1)有不少表示地点的副词:
She is studying abroad.  她在国外留学。
2)还有一些部分与介词同形的副词。它们与介词同形,跟宾语的是介词,否则是副词:
①用作介词:Stand up!  起立!
②用作副词:A cat climbed up the tree.  猫爬上了树。
3)以where 构成的副词也是地点副词: 
It’s the same everywhere.  到处都一样。
3、方式副词:
carefully, properly(适当地), anxiously(焦虑地), suddenly, normally(正常地), fast, well, calmly(冷静地), politely(有礼貌地), proudly(自豪地), softly, warmly ,slowly
4、程度副词:
much,little, very,rather(相当),so,too,still, quite, perfectly(完美地), enough, extremely(非常), entirely(整个),almost, slightly(细小地), hardly.
5、疑问副词:
how, when, where, why.
6、关系副词:
when, where, why.等。
7、 连接副词:
therefore(因此),moreover(此外),however,otherwise(另外的),then,when ,where,how,why等。

副词的语法作用:
副词在句中可作状语,表语,补语,定语。
He works hard. (作状语)
他工作努力。
You speak English very well. (作状语)
你英语讲的相当好。
Is she in ? (作表语)
她在家吗?
Let's be out. (作表语)
让我们出去吧。
Food here is hardly to get. (here作定语,hardly作状语)
这儿很难弄到食物。
Let him out!(作补语)
让他出去!
修饰名词的副词放在被修饰词之后
a. The villagers there are busy getting in wheat.


不同类型副词的用法比较:
方式副词:
1)英语中有大量方式副词,说明行为方式(回答how的问题):
How beautifully your wife dances.  你夫人舞跳的真美。
2)还有相当多的副词,表示某些情绪:
She smiled gratefully.  她感激的笑了笑。
3)还有一些以-ly结尾的副词,表示动作发生的状况:
He left the town secretly. 他悄然离开了这座城市。

程度副词和强调副词 :
1)程度副词可修饰动词,表示“到某种程度”:   Is she badly hurt?  她伤得重吗?
  [说明] 这类副词除修饰动词外,还可修饰形容词(a)或另一副词(b):
a. fairly simple 相当简单      quite correct 完全正确
b. wonderfully well 好极了    do it very quickly 干得很快
2)much 是一个特殊的程度副词,它可以:
a. 修饰形容词等:
I’m not much good at singing. 我唱歌不太好。
 b. 修饰比较级:
You sing much better than me. 你比我唱的好多了。
Their house is much nicer than ours. 他们的房子比我们的好多了。

疑问副词和连接副词:
1)疑问副词:疑问副词用来引导特殊问句:
how: How is your grandmother? 你奶奶身体好吗?
where: Where does she come from? 她是哪儿人?
when: When can you come? 你什么时候能来?
why: Why was he so late? 他为什么来得这么晚?
2)连接副词:连接副词意思和词形都和疑问副词一样,但都引导从句或与不定式连用:
how: Do you know how to start this machine? 你知道这台机器怎样启动吗?
where: I don’t know where he lives. 我不知道他住在哪儿。(引导宾语从句)
when: Tell me when you’ll be ready. 告诉我你什么时候准备好。(引导宾语从句)
why: That’s why I came round. 这就是我来的原因。(引导表语从句)

一些其它类型的副词,如表示方向的副词:
Let’s go inside. 咱们到里面去。
Take two steps forward. 向前走两步。


副词的位置:
1、实义动词前,be动词、情态动词之后。
I am also Bush.
I can also do that.
I also want to play that games.
I get up early in the morning everyday. 我每天早早起床。
He gave me a gift yesterday. 他昨天给了我一件礼物。
She didn't drink water enough. 她喝的水不够。
The train goes fast. 火车跑得快。
We can go to this school freely. 我们可以免费到这家学校学习。
They left a life hardly then. 当时他们的生活很艰难。
He has a new hat on today. 他今天戴了一顶新帽子。
I have seen this film twice with my friends. 这部电影我和朋友看过两次。

2、副词修饰形容词,副词时,副词在前面,而被修饰的词在后面。
It's rather easy, I can do it. 这很容易,我能做到。
He did it quite well. 他做得相当好。
It's rather difficult to tell who is right.很难说谁是对的。
It's so important that I must tell my friends. 这件事太重要了,我得告诉我的朋友。
It's much better. 好多了。

3、频度副词可放在实义动词的前面,情态动词和助动词的后面。
I often help him these days. 这些日子我经常帮助他。
I always remember the day when I first came to this school.
我常常记得我第一次来学校的那一天。
You mustn't always help me. 你不能老是帮助我。
He seldom comes to see us. 他很少来看我们。
We usually go shopping once a week. 我们通常一周买一次东西。
The new students don't always go to dance. 新学生并不时常去跳舞。

4、疑问副词,连接副词,关系副词以及修饰整个句子的副词,通常放在句子或从句的前面。
When do you study everyday? 你每天什么时间学习?
Can you tell me how you did it? 你能告诉我你如何做的吗?
First, let me ask you some questions. 先让我来问几个问题。
How much does this bike cost? 这辆车子多少钱?
Either you go or he comes. 不是你去就是他来。
The students were reading when the teacher came into the classroom. 当老师进教室时,学生们正在读书。

5、时间副词和地点副词在一个句中, 地点副词在前面时间副词在后面。
We went shopping in the supermarket at 9 o'clock yesterday.
昨天九点钟我们到超市买东西了.
What were you doing in the classroom yesterday afternoon?
昨天下午你在教室里干什么?
The accident took place in the Eleven Avenue one hour ago.
一小时前十一号大街发生了一场事故。

6、否定副词在句首,句子要倒装,如:
Never have I felt so excited!
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"
He is sitting close to me.
Watch him closely.

2) late 与lately
late意思是"晚"; lately 意思是"最近"
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"
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
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"
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"
You can eat free in my restaurant whenever you like.
You may speak freely; say what you like.
副词有加a或ly的 区别在于通常加a 的副词描述一种状态,而加ly 的副词则倾向于感觉。
表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的。
动词的过去式可分为规则动词和不规则动词。

实意动词过去式变化规则:

分类 构成 例句
一般情况下 在词尾直接加ed ask—asked
work—worked
以不发音的e结尾 只加d

love—loved

dance—danced

以辅音字母加y结尾 变y为i,再加-ed try—tried
study—studied
以一个元音字母和一个辅音结尾的
重读音节结尾的动词
先双写末尾一个字母,再加ed stop—stopped
permit—permitted
“-ed”的读音规则 1.在清辅音后面读[t],如:help—helped[helpt]
2.在浊辅音或元音后读[d],如:learn—learned
3.在[t]和[d]后读[id],如:want—wantedneed—needed
注:以l结尾的动词,尾音节重读时,双写l,如control—controlled;
尾音节不重读时,双不双写都可以,如travel—traveled/traveled。
特例:picnic—picnicked,另外还有很多动词的过去式是不合乎上述规则的,常见的有:
常用的有:
begin—began,         bring—brought,        come—came,        draw—drew,
drink—drank,          drive—drove,          eat—ate,                feel—felt,
get—got,                  give—gave,              go—went,             grow—grew,
have (has)—had,      keep—kept,            know—knew,       leave—left,  
make—made,           read—read,            run—ran,               say—said,
see—saw,                sit—sat


几个特殊实意动词过去式用法:
a.beat的过去式与原形同形:   
beat(打击) 
beat(过去式) 
beaten(过去分词)   
b.lie有规则变化和不规则变化两种,含义不同   
lie,lied, lied(说谎)   
lay, lain(躺,位于)   

c.hang有规则变化和不规则变化两种,含义不同   
hang,hanged, hanged(处绞刑)   
hung, hung(挂,吊)   

d. welcome(欢迎)一词是规则动词,不可误用为不规则动词   
welcome welcomed, welcomed(正)   
welcome, welcome(误)   

e.不要将不规则动词误用为规则动词   
hit(打) 
hit, hit(正)   
hitted, hitted(误) 


实意动词过去式用法基本句式:
1.主+V-ed+宾+其它。。。(肯定句)
2.主+didn't+V原+宾+其它。。。
3.Did+主+V原+宾+其它。。。+?
4.回答:Yes,主语代词+didNo,主语代词+didin't.
5.特殊疑问句:特殊疑问词+一般疑问句。
实义动词的一般过去时态:
肯定句要使用动词的过去式,否定句和疑问句要使用助动词do和 does 的过去式 did.

肯定句为:
主语+动词过去式+宾语    如:
I went home at nine o'clock yesterday.

否定句:
主语+didn't +动词原形+宾语  如:
I didn't go home yesterday.  He didn't tell me about you.

疑问句:
一般疑问句:
Did +主语+动词原形+宾语
如:Did you go home yesterday?  
Did you study in the school?
肯定回答: Yes, I did.    
否定回答:No, I didn't.

特殊疑问句:特殊疑问词+did +主语+动词原型+宾语
When did you finish your homework last night?      
What did you do the day before yesterday?
实意动词:
即行为动词,表示动作的动词。实义动词与系动词是相对的,能独立用作谓语。
它分为及物动词和不及物动词两种:
及物动词是指后面要求有直接宾语的动词;
不及物动词指后面不需要跟宾语的动词。

实意动词使用方法:
及物动词
后面必须跟宾语意义才完整的实义动词,叫做及物动词(transitive verb)。如:
I believe that the committee will consider our suggestion.我相信委员会将会考虑我们的建议。
“How long can I keep the book ?”Harry asked.哈里问:“这本书我可以借多久?”
Dr. Bethune set us a good example. 白求恩大夫给我们树立了好榜样。
Crude oil contains many useful substances.原油含有许多有用的物质。

不及物动词
本身意义完整后面不须跟宾语的实义动词,叫做不及物动词(intransitive verb)。如:
Birds fly.鸟会飞。
It happened in June 1932.这件事发生于一九三二年六月。
My watch stopped.我的表停了。
She spoke at the meeting yesterday evening. 她在昨天晚上的会上发了言。

兼作及物动词和不及物动词
英语里有不少实义动词可以兼作及物动词和不及物动词。这样的动词又有两种不同的情况
a)兼作及物动词和不及物动词时,意义不变。试比较:
Shall I begin at once?我可以立刻开始吗?(begin作不及物动词)
She began working as a librarian after she left school.她毕业后当图书馆管理员。(began作及物动词)
When did they leave Chicago?他们是什么时候离开芝加哥的?(leave 作及物动词)
They left last week. 他们是上周离开的。(left 作不及物动词)
b)兼作及物动词和不及物动词时,有时意义不尽相同。如:
Wash your hands before meals.饭前要洗手。
Does this cloth wash well? 这布经得起洗吗?


英汉实意动词用法比较:
与汉语的比较,有时英语动词的及物和不及物的用法,与汉语的用法不一样,请注意下列两种情况:
a)有的动词在英语里只能用作不及物动词,而汉语则可用作及物动词,如arrive到达,agree同意,listen听。英语里这些动词后面常接介词。如:
We arrived at the railway station at noon.
我们于中午到达火车站。(at不能省去)
(比较:We reached the railway station at noon.)
Everybody listened to the lecture with great interest.
每个人都很有兴趣地听讲课。(to不可省去)
(比较:We all heard the lecture.)
Do they agree to the plan?他们同意这个计划吗?(to不可省去)

b)有的动词在英语里能用作及物动词,而在汉语里则不能用作及物动词,如serve为…服务。
Our children are taught to serve the people wholeheartedly.
我们的儿童被教以全心全意为人民服务
用于be动词之后,实义动词之前。

 实意动词的用法:
肯定句:
主语+动词过去式+其它
否定句:
主语+助动词didn‘t+动词原型+其他
一般过去式:
Did+主语+动词原型+其他


助动词的过去式:

助动词

be

do

have

shall

will

过去式

was/were

did

had

should

would


介词:
是一种用来表示词与词、词与句之间的关系的虚词,在句中不能单独作句子成分。
介词后面一般有名词代词或相当于名词的其他词类,短语或从句作它的宾语。
介词的分类:
(1)表示时间,处所:从 自 自从 于 打 到 往 在 当 朝 向 顺着 沿着 随着
(2)表示方式:按 照 按照 依 依照 本着 经过 通过 根据 以 凭
(3)表示目的:为 为了 为着
(4)表示原因:因 由于 因为
(5)表示对象,范围:对 对于 把 向 跟 与 同 给 关于
(6)表示排除:除 除了 除去 除非
(7)表示被动:被 叫 让 给
(8)表示比较:比 和 同
上述介词中的“着,了,过”是语素,不是动态助词。

介词at, in, on的区别: 
1. 表示时间,注意以下用法:
(1) 表示时间的某一点、某一时刻或年龄等用 at。如:
I get up at six in the morning. 我早上六点钟起床。
He got married at the age of 25. 他 25 岁结婚。
(2) 泛指一般意义的上午、下午或晚上以及月或年等较长的时间,一般用 in。如:
We watch TV in the evening. 我们晚上看电视。
He went to Japan in 1946. 他于 1946 去了日本。
(3) 若表示星期几或某一特定的日期,则用 on。如:
He left here on the fifth of May. 他于 5 月 5 日离开这儿。

2. 表示地点、场所、位置等,注意以下用法:
(1) 表示某一点位置,用 at。如:
We live at No 87 Beijing Road. 我们住在北京路 87 号。
The hospital is at the end of the street. 医院在这条街的尽头。
与名词所有格连用表示地点,也用 at。如:
at my sister’s 在我姐姐家  at the doctor’s 在医务室
(2) 表示空间或范围,用 in。如:
What’s in the box? 这盒子里有什么?
He lives in Paris with his wife. 他同他妻子住在巴黎。
但有时两者可换用。如:
The meeting was held at [in] the hotel. 会议在宾馆举行。
(3) at 与 in 的另一个区别是:at 用于指较小的地方,而 in 用于指较大的地方。如:
in Shanghai 在上海    at the station 在车站
但是,大与小是相对的,有时随着说话者的着眼点不同,大地方也可能用 at(比如把一个大地方看作一个点时)。如:
Our plane refuelled at London. 我们的飞机在伦敦加油。
We stopped for an hour at Moscow on our way to Paris. 我们在去巴黎的途中在莫斯科停了 1 个小时。
(4) 介词 on 用于地点,主要指在某物的表面。如:
What’s on the table? 桌上有什么?
There’s a wallet lying on the ground. 地上有个钱包。
注:在少数搭配中,也用介词 on。如:
He works on a farm. 他在农场工作。

3. 在某些搭配中,三者的区别与英国英语和美国英语有关:
in the street (英) / on the street (美) 在街上
in the road (英) / on the road (美) 在路上
in the team (英) / on the team (美) 在这个队
at the weekend (英) / on the weekend (美) 在周末
at weekends (英) / on weekends (美) 在周末
4. 有时三者的差别与搭配习惯和用法有关:
in bed / on the bed 在床上
in the tree (多指树外之物) / on the tree (多指树本身之物) 在树上

介词besides,but,except的用法区别:
 1. 三者都可表示“除外”,但 besides 表示一种累加关系,意指“除了什么之外,还有……”;
而 except 或 but 则表示一种排除关系,意指“除了什么之外,不再有……”。如:
Besides his wife,his daughter also went to see him. 除他妻子外,他女儿也去看过他(即妻子女儿都去看过他)。
Nobody went to see him except [but] his wife. 除他妻子外,没有一个人看过他(即只有他妻子去看过他)。
注:在否定句中,besides 也表示“除……之外不再有…… ”,与but, except 同义。如:
No one passed the exam besides [except] Jim. 除吉姆外,没一个人通过考试。

2. 关于 but 与 except:
(1) 两者都可表示“除……外不再有……”,但含义上略有差别:
but侧重指意义的几乎完整性,而 except 则侧重指后面除去的部分。比较:
All are here but one. 除一个人都到了。
All are here except one. 还有一个人没到。
(2) 在现代英语中,but 的介词用法十分有限,一般说来,它只能用在下列词语之后:
① no, no one, nobody, nothing, nowhere 等
② any, anyone, anybody, anything, anywhere 等
③ every, everyone, everybody, everything, everywhere 等
④ all, none 等
⑤ who, what, where 等
Everyone knows it but you. 除你之外大家都知道。
I haven’t told anybody but you. 除你之外,我没告诉任何人。
No one but he [him] showed much interest in it. 除他之外没有一个人对此有很大兴趣。
一般说来,若没有出现上述词汇,就不宜使用介词 but,否则可能造成错句。但是 except 却没有以上限制。比较:
正:The window is never opened except in summer. 除夏天外,这扇窗户从不打开。
误:The window is never opened but in summer.
(3) but 一定不能用于句首,except 通常不用于句首:
除我之外每个人都累了。
正:Everyone is tired but (except) me.
正:Everyone but (except) me is tired.
误:But (Except) me, everyone is tired.
注:except for 可用于句首,表示 except 的意思:
正:Except for me, everyone is tired.

3. 关于 except 与 except for:
except 主要用来谈论同类的东西,而 except for 则主要用来谈论不同类的东西,有时含有惋惜之意。如:
All compositions are well written except yours. 除了你的作文外,其他的作文都写得很好。
His composition is good except for a few spelling mistakes. 他的作文写得不错,只是有几处拼写错误。
注:若用于句首,则 except for 与 except 同义(但 except 通常不用于句首)。

4. 关于 except for 与 but for:
except for 主要表示排除,but for 主要表示一种虚拟条件(与虚拟语气连用)。如:
Except for me, everyone passed the exam. 除了我之外,大家都通过了考试。
But for my help, she would not have passed the exam. 若不是我的帮助,她就不会通过考试。
But for the atmosphere plants would die. 如果没有大气,植物就会死亡。
5. besides 除用作介词外,还用作副词,其意为“此外”、“而且”,可用于分句句首(通常用逗号隔开)或句尾。如:
I don’t want to go; besides, I’m too tired. 我不想去,而且我也太累了。
This car belongs to Smith, and he has two others besides. 这部车是史密斯的,此外他还有两部。


介词的用法口诀:

早、午、晚要用inat黎明、午夜、点与分。

年、月、年月、季节、周,阳光、灯、影、衣、冒in

将来时态in。。。以后,小处at大处in

有形with无形by,语言、单位、材料in

特征、方面与方式,心情成语惯用in

介词atto表方向,攻击、位置、恶、善分。

日子、日期、年月日,星期加上早、午、晚,

收音、农场、值日on,关于、基础、靠、着论。

着、罢、出售、偷、公、假,故意、支付、相反,准。

特定时日和“一……就”,on后常接动名词。

年、月、日加早、午、晚,of之前onin

步行、驴、马、玩笑oncabcarriage则用in

at山脚、门口、在当前,速、温、日落、价、核心。

工具、和、同随with,具有、独立、就、原因。

就……来说宾译主,对、有、方状、表细分。

海、陆、空、车、偶、被by,单数、人类knowtoman

thisthattomorrowyesterdaynextlastone

接年、月、季、星期、周,介词省略已习惯。

overunder正上下,abovebelow则不然,

若与数量词连用,混合使用亦无关。‘

beyond超出、无、不能,against靠着,对与反。

besidesexcept分内外,among之内along沿。

同类比较except,加for异类记心间。

原状becauseof,、owingtodueto表语形容词

under后接修、建中,offrom物、化分。

beforeafter表一点,agolater表一段。

before能接完成时,ago过去极有限。

since以来during间,since时态多变换。

与之相比beside,除了lastbutone

复不定for、找、价、原,对、给、段、去、为、作、赞。

快到、对、向towards,工、学、军、城、北、上、南。

butfor否定用虚拟,复合介词待后言。

ing型由于鉴,除了除外与包合。

之后、关于、在。。。。。。方面,有关介词须记全。

into外表位置,山、水、国界to在前。


一般疑问句:
是疑问句的一种。通常用yes,no来回答的疑问句叫做一般疑问句。口语中若无特殊含义,句末用升调。
其结构是:系动词be/助动词/情态动词+主语+其他成分? 
通常回答为:   
肯定:Yes+主语+提问的助动词   
否定:No+主语+提问的助动词+not 
例如:
Are you from Japan?   Yes, I am./No, I'm not.
Do you live near your school? Yes, I do./No, I don't. 
Can you speak French?  Yes, I can./No, I can't.
一般疑问句的特性:
1.将陈述句变为一般疑问句时,如句中有be 动词(am/ is/ are)时,可直接将它们提至主语前。
如主语为第一人称,应将其改为第二人称。如:
I'm in Class 2Grade 1. →Are you in Class 2Grade 1﹖
We're watching TV. →Are you watching TV﹖
2.陈述句中有情态动词(can、may、must …)时,也可直接将它们提至主语前,即可成为一般疑问句。如:
He can swim now. →Can he swim now﹖
The children may come with us. → May the children come with us﹖
3.陈述句中只有一个实义动词作谓语且其时态为一般现在时,变为一般疑问句时要在句首加do或does主语后的实义动词用原形。如:
I like these animals. →Do you like these animals﹖
She wants to go to the movies. → Does she want to go to the movies﹖
4.一般疑问句一般读升调(↑)
5.一般疑问句有时不用yes或 no 回答。如:
Are they in town now﹖
I think so.
May I sit here﹖
Certainly.
Does he like soccer﹖
Sorry I don't know.
6. 一般疑问句的第一单词总是虚词,读的时候要读轻声。
陈述句变为一般疑问句技巧:
根据一般疑问句不同的家族,可以用不同的方法将陈述句变为相应的一般疑问句。
1、第一家族:含be动词或情态动词的句子
秘诀:一调二改三问号
一调:即把句中的be或情态动词调到主语前;
二改:改换主语称谓,即将句中的主语Imy minesweourours等。第一人称分别改为相应的第二人称youyour yours等;
三问号:句末的句号改为问号。如:
Eg. I am an English teacher.    →    Are you an English teacher?
Eg. We can speak English fluently.   →    Can you speak English fluently?

2、第二家族:含行为动词(或称为实义动词)的句子
秘诀:一加二改三问号
一加:即在句首加助动词Do或Does;
二改:1、把谓语动词改为原形;2、改换主语称谓(同第一家组);
三问号:句末的句号改为问号。
Eg. We read English every morning. → Do you read English every morning?
Eg. Tom’s father listens to English on the radio every evening. →Does Tom’s father listen to English on the radio every evening?
特别注意:对于第二家族一定要注意动词的还原,因为时态与数的变化已经体现在助动词上了。

3、加强记忆口诀:
肯变一,并不难,can 或be提在前;
谓语若为行为动,do 或does句首用。
反义疑问句:
表示提问人的看法,没有把握,需要对方证实。
反意疑问句由两部分组成:前一部分是一个陈述句,后一部分是一个简短的疑问句,两部分的人称时态应保持一致。
1. 陈述部分肯定式+疑问部分否定式可记为前肯后否。 
2. 陈述部分否定式+疑问部分肯定式可记为前否后肯。
例如:This pencil is red, isn’t it? Yes, it is. / No, it isn’t. 
               This pencil isn’t red, is it? Yes, it is. / No, it isn’t.
速记:
前肯后否,前否后肯,前be后be,前无be后加助,时态一致。

反意疑问句的回答
前肯后否,前否后肯,根据事实从后往前翻译。如:
(1)They work hard,don’t they?他们努力工作,不是吗?
Yes, they do.对,他们工作努力。/No, they don't.不,他们工作不努力
(2)They don’t work hard, do they? 他们不太努力工作,是吗?
Yes, they do. 不,他们工作努力。/No, they don't. 是的, 他们工作不努力

否定反义疑问句的回答
当陈述部分为肯定式,反义疑问句为否定式时,其回答一般不会造成困难,一般只需照情况回答即可:
"It’s new, isn’t it?" "Yes, it is." “是新的,不是吗?”“是,是新的。”
"He wants to go, doesn’t he?" "No, he doesn’t." “他想去,不是吗?”“不,他不想去。”
此时,"Yes"即是,对前面"It's new."的肯定。

回答反义疑问句的原则
回答反意疑问句通常应根据实际情况来确定,
如有人问你You are asleep, aren’t you? 你应回答No, I’m not. 因为既然你能回答,肯定你还没有asleep。
但如果别人问你 You aren’t asleep, are you?(你还没有睡着,对吗),你也只能回答No, I’m not.(是的,还没有睡着),而不能回答为Yes, I’m not. 也不能回答成 Yes, I am.
“It is a beautiful flower,isn't it?” “It isn't a beautiful flower,is it?”
上述两句句子的回答肯定均为“Yes,it is."否定为“No,it isn't."
由上述例子可知,反义疑问句回答与句子本身所包含的中文肯定与否的含义并无太大关联,只需注意事实,肯定即用yes,否定用no,无需考虑句子原本是前否后肯或是前肯后否。

口诀:
反意疑问并不难,陈述疑问句中含。
前后肯否恰相反,否定词缀不能算。
主谓时态要一致,特殊情况记心田。
实际情况来回答,再把yes和no拣。
综上所述,反义疑问句回答就是按实际情况回答。
对反意疑问句的回答,无论问题的提法如何,如果事实是肯定的,就用yes,事实是否定的,就要用no。
要特别注意陈述句部分是否定结构,反意疑问句部分用肯定式提问时,回答yes或no与汉语正好相反。这种省略回答的yes要译成“不”,no要译成“是”。
例:
—He likes playing football, doesn’t he? 他喜欢踢足球,不是吗?
—Yes, he does. / No, he doesn’t. 是的。/ 不是。
—His sister didn’t attend the meeting, did she? 他妹妹没有参加会议,是吗?
—Yes, she did. / No, she didn’t. 不,她参加了。/ 是的,她没参加。


快速记忆表:
陈述部分的谓语   疑问部分
I/主语   aren't I / are I
no,nothing,nobody,never,few, seldom, hardly,rarely, little等否定含义的词   肯定含义
含有un-,in-.dis-,im-等否定意义的前缀构成的词语时,视为肯定含义   否定含义
ought to(肯定的)   shouldn't/ oughtn't +主语
have to+v.(had to+v.)   don't +主语(didn't +主语)
used to+v.   didn't +主语或 usedn't +主语
had better + v.   hadn't you
would rather + v.   wouldn't +主语
you'd like to + v.   wouldn't +主语
must   根据实际情况而定
感叹句   be +主语
指示代词或不定代词everything,that,nothing,this   主语用it
并列复合句   谓语根据邻近从句的谓语而定
定语从句,宾语从句主从复合句   根据主句的谓语而定
think,believe,expect,suppose,imagine等引导   与宾语从句相对应的从句
everybody,anyone,somebody,nobody,no one   复数they, 单数he
情态动词dare或need   need/needn't (dare/daren't ) +主语
dare, need 为实义动词   do/don't +主语
省去主语的祈使句   will/won't you?
Let's 开头的祈使句   Shall we?
Let us 开头的祈使句   Will you?
there be   相应的谓语动词+there(省略主语代词)
否定前缀不能视为否定词   仍用否定形式.
反意疑问句19条:
1) 陈述部分的主语是I,疑问部分要用 aren't I.
I'm as tall as your sister,aren't I?
2) 陈述部分的谓语是wish,疑问部分要用may +主语。
I wish to have a word with you, may I?
3) 陈述部分用 no, nothing, nobody, never, few, seldom, hardly, rarely, little等否定含义的词时,疑问部分用肯定含义。
The Swede made no answer, did he / she?
Some plants never blown (开花), do they ?
4) 含有ought to 的反意疑问句,陈述部分是肯定的,疑问部分用shouldn't / oughtn't +主语。
He ought to know what to do, oughtn't he? / shouldn't he?
5) 陈述部分有have to +v. (had to + v.),疑问部分常用don't +主语(didn't +主语)。
We have to get there at eight tomorrow, don't we?
6) 陈述部分的谓语是used to 时,疑问部分用didn't +主语或 usedn't +主语。
He used to take pictures there, didn't he? / usedn't he?
7) 陈述部分有had better + v. 疑问句部分用hadn't you?
You'd better read it by yourself, hadn't you?
8) 陈述部分有would rather +v.,疑问部分多用 wouldn't +主语。
He would rather read it ten times than recite it, wouldn't he?
9) 陈述部分有You'd like to +v. 疑问部分用wouldn't +主语。
You'd like to go with me, wouldn't you?
10) 陈述部分有must 的疑问句,疑问部分根据实际情况而定。
He must be a doctor, isn't he?
You must have studied English for three years, haven't you? / didn't you?
He must have finished it yesterday, didn't he?
11) 感叹句中,疑问部分用用否定的助动词加sb/sth?如:
1)What a fine day it is today!
What a fine day it is today,isn“t it?
2)How fast he runs!
How fast he runs,doesn”t he?
3)What a long time we have been waiting!
What a long time we have been waiting ,haven“t we?
12) 陈述部分由neither… nor, either… or 连接的并列主语时,疑问部分根据其实际逻辑意义而定。
Neither you nor I am engineer, are we?
13) 陈述部分主语是指示代词或不定代词everything, that, nothing, this, 疑问部分主语用it。
Everything is ready, isn't it?
14)陈述部分为主语从句或并列复合句,疑问部分有三种情况:
a. 并列复合句疑问部分,谓语动词根据邻近从句的谓语而定。
Mr. Smith had been to Beijing for several times, he should have been in China now, shouldn't he?
b. 带有定语从句,宾语从句的主从复合句,疑问部分谓语根据主句的谓语而定:
He is not the man who gave us a talk, is he?
He said he wanted to visit Japan, didn't he?
c. 上述部分主句谓语是think, believe, expect, suppose, imagine等引导的定语从句,疑问部分与宾语从句相对应构成反意疑问句。
I don't think he is bright, is he?
We believe she can do it better, can't she?
15) 陈述部分主语是不定代词everybody, anyone, somebody, nobody, no one等,疑问部分常用复数they,有时也用单数he。
Everyone knows the answer, don't they? (does he?)
Nobody knows about it, do they? (does he?)
16) 带情态动词dare或need的反意疑问句,疑问部分常用 need (dare ) +主语。
We need not do it again, need we ?
He dare not say so, dare you?
当dare, need 为实义动词时,疑问部分用助动词do + 主语。
She doesn't dare to go home alone, does she?
17) 省去主语的祈使句的反意疑问句,疑问部分用will you。
Don't do that again, will you?
Go with me, will you / won't you ?
注意: Let's 开头的祈使句,后用shall we?
Let us 开头的祈使句,后用will you?
Let's go and listen to the music, shall we?
Let us wait for you in the reading-room, will you ?
18) 陈述部分是"there be"结构的,疑问部分用there省略主语代词。
There is something wrong with your watch, isn't there?
There will not be any trouble, will there?
19) 否定前缀不能视为否定词,其反意疑问句仍用否定形式。
It is impossible, isn't it?
He is not unkind to his classmates, is he?
有些动词如:cost hurt hit put 等,它们的过去时与原型相同,在肯定句中一定要先弄清楚它们是什么时态.
英语18种特殊的反意疑问句:
1.祈使句。祈使句后一般加上will you或won't you构成反意疑问句,用will you 多表
示“请求”,用won't you 多表示提醒对方注意。例如:    
Look at the blackboard, will you/ won't you?看黑板,好吗?   
Let 引导的祈使句有两种情况:   
1) Let's...后的反意疑问句用shall we或shan't we。例如:   
Let's go home, shall we/ shan't we? 回家吧,好吗?    
还可以用may I来表示征求对方的同意或许可。   
2) Let us/me...后的反意疑问句用will you或won't you。例如:    
Let me have a try, will you/won't you? 让我试一试,行吗?   
2. 感叹句。感叹句后加反意疑问句时,其反意疑问句需用be的一般现在时态的否定形式。 例如:   
What fine weather, isn't it? 多好的天气啊,是吧?    
3. 当陈述部分谓语动词是need, dare, used to,且这些词被用作实义动词时,其反意疑问 句需用do的适当形式。例如:   
He needs help, doesn't he? 他需要帮助,是吗?    
4. 陈述部分主、谓语是I am...时,反意疑问句用aren't I 或am't I ,而不是am not I (可 用a m I not)。例如:   
I'm working now, am't I? 我在工作,是吗?   
5. 陈述部分的主语是everything, nothing, anything或something 时,反意疑问句的主语应用代词it。例如:    
Something is wrong with my radio, isn't it? 我的收音机出毛病了,是吧?   
6. 陈述部分的主语是 everybody, everyone, anybody, anyone, somebody, someone, nobody, no one, none, neither 时, 其反意疑问句的主语需用复数代词they。 例如:   
Everyone is here, aren't they? 大家都到了,是吗?   
No one knows about it, do they? 没有人知道这件事,对吗?   
7. 陈述部分的主语是指示代词this或that时,反意疑问句的主语用it,当陈述部分的主语是指示代词these或those时,其反意疑问句的主语用they。 例如:   
This is a plane, isn't it? 这是一架飞机,是吗?   
These are grapes,aren't they? 这些是葡萄,是吗?   
8. 陈述部分的主语是不定代词one时,反意疑问句的主语可以用one,也可用you(美式英语用he)。例如:   
One should be ready to help others, shouldn't one? 每个人都应该乐于助人,是吧?   
9. 当陈述部分含有以下这些含有否定意义的词时:few, little, seldom,hardly, never, not,  no, no one, nobody, nothing, none, neither等,其反意疑问句需用肯定结构。 例如:    
He is never late for school, is he? 他上学从不迟到,是吗?   
10. 当陈述部分所含的否定词是通过加前缀或后缀构成的,其后的反意疑问句依然用否定结构。例如:   
   It is unfair, isn't it? 这不公平,是吧?   
11.含有否定含义的词在陈述部分作动词的宾语时,其反意疑问句用肯定结构,也可以用否定结构。例如:   
You got nothing from him, did you? 你从他那儿什么也没得到,是吗?   
12. 当陈述部分主语是从句、不定式(短语)、动词-ing形式时,反意疑问句的主语应该用it。  例如:   
What you need is more important, isn't it?你需要的东西更重要,是吧?   
13. 当陈述部分含I think (believe, suppose...)that... 结构时,其反意疑问句须与从句的主、谓语保持一致,注意主句的主语必须是第一人称。例如:   
I don't think he will come, will he? 我认为他不会来,对吗?   
14.have(has)不是表示“有”的意思,并在句中做谓语时,其反意疑问句的助动词要用do, does, did。例如:   
They had a meeting just now,didn't they? 他们刚才开了个会,是吗?   
15. 陈述部分有have to 时,其反意疑问句要用助动词的否定形式。例如:   
You have to water the vegetables every day, don't you?你每天都要浇菜,对吧?   
16. 陈述部分是there be句型时,其反意疑问句中要用there。例如:   
There was a hospital here, wasn't there? 过去这儿有家医院,是吗?   
17. 陈述部分有had better时,反意疑问句中要用hadn't。 例如:   
We had better go to school at once, hadn't we? 我们现在最好马上去上学,好吗?
18. 当陈述部分含有情态动词must时,我们便要分析一下must的含义。如果must 作“一定;要;必须”讲,反意疑问句须用mustn't或needn't;
而当must作推测意义“一定 是;必定”讲时,反意疑问句则需根据must后的动词原形选用相应的形式。例如:    
He must work hard at physics, mustn't he? 他必须努力学物理,是吧?   
Tom must be at home,isn't he? 汤姆一定在家,是吧?
倒装句:
为了强调、突出等语的目的而颠倒原有语序的句式叫做倒装句。在倒装句中,颠倒了的成分可以恢复原位而句意基本不变,句法成分不变。

倒装句使用情况:
A. 在疑问句中
各种疑问句一般地说都是倒装语序。例如:
Will they come to see us this weekend ? 这个周末他们将来看我们吗?
Are you talking about the film you saw last Monday ?
你们是在谈论你们上周一看的那部电影吗?
Can you speak another foreign language except English?
除开英语,你还能说另一种外语吗?
Where did you buy the dictionary, in the book store nearby or in Xinhua bookstore?
你在哪儿买的这本词典,是在附近的书店还是在新华书店?
She is not a student, isn't she ? 她不是个学生,对吗?

B. 在感叹句中
某些感叹句也用倒装语序。例如:
Isn't it a beautiful garden ! 多么美丽的花园啊!
What a beautiful garden it is ! 多么美丽的花园啊!
(在这种句式中,主语在谓语之前,属于自然语序。对于主语和谓语而言,语序没有倒装。)
Have you ever seen such a naughty kid like him ! 你见过那个孩子像他这么调皮!

C. 在陈述句中
陈述句在一般情况下用自然语序;但由于英语语法的某些原因,陈述句也要使用倒装语序。这些原因大致可以归纳如下:
1) 为了避免句子部分内容不必要的重复,常用"so + be动词(助动词、情态动词)+主语"或"neither / nor + be动词(助动词、情态动词)+主语"的倒装句式。
其中第一个句式表示"与前面所述的肯定情况相同", 第二个句式表示"与前面所述的否定情况相同"。例如:
His brother is a college student; so is mine.
他弟弟是大学生,我弟弟也是。
His brother is not a college student; nor is min .
他弟弟不是大学生,我弟弟也不是。
He used to have his further study abroad; so did I.
他曾去国外深造过,我也去过。
He didn't use to have his further study abroad; neither did I.
他没去国外深造过,我也没有。
One of my friends can speak three foreign languages; so can his wife.
我的一个朋友会说三门外国语,他的妻子也会。
One of my friends cannot speak three foreign languages; neither can his wife .
我的一个朋友不会说三门外国语,他的妻子也不会。
They are now preparing for their final examinations; so are we .
他们正在为期末考试作准备,我们也一样。
They are not now preparing for their final examinations; nor are we .
他们没在为期末考试作准备,我们也没有。

2)具有否定意义的词或短语置于句首时(除否定词修饰主语外),句子一般要写成部分倒装句。
这类词或短语常见的有:
not, never, seldom, hardly, rarely, scarcely, by no means, under no circumstances, in no way, at no time, no sooner … (than), hardly … (when), not only … (but also), not until… ,等。例如:
Hardly had she sat down when she heard someone knocking at the door .
她还没来得及坐下来,就听见有人敲门。
Not until twelve o'clock did he go to bed last night .
他昨晚直到十二点钟才睡觉。
Never have my sisters been to Hong Kong before .
我的妹妹们以前从未去过香港。
No sooner had I returned home from New Zealand than I bought a house and went to live there.
我从新西兰一回国,就买了一栋房子并在那儿住下了。
So far as I know, seldom does Mary come back to see her mother.
就我所知,玛利几乎很难回来看她妈妈。
Scarcely a drop of rain fell here last fall . (否定词修饰主语时,句子不用倒装。)
去年秋天,这儿几乎没下一滴雨。

3)当so, often, only等表示程度、频率的副词放在句首时,句子一般要倒装。例如:Only in this way can you come up with a solution to the problem.
只有这样,你才有可能想出解决这个问题的办法。
So serious was the situation that everybody faced a test.
形势如此地严峻,每个人都面临着一场考验。
So hard did he overwork that he fell ill at last. 他太操劳过度以致最后病倒了。

4)当there, here, then, now等副词在句首,且谓语是come, go, be等动词时,句子一般要全部倒装。
其意义在于引起他人的注意。如果这类句子的主语是代词,则不用写成倒装句。例如:
Now, here goes the story.这个故事是这样的。
Look, there comes the taxi.瞧,出租车过来了。
Then came another question.然后又一个问题提出来了。
Then followed the four-year War of Liberation.接下来是四年的解放战争。

5) 当out, in, away, up, bang等表示方位或拟声词放在句首时,句子一般要全部倒装。
这类句子比自然语序的句子更为生动、形象。但如果这类句子的主语是代词,则不用写成倒装句。例如:
Bang goes my ace.我砰地一下打出了"爱司"。
Away flew the bird.那鸟飞走了。
Suddenly, in came a man with a mask on his face.突然进来一个蒙着面具的人。

6) 其他情况还有:省略了if的虚拟条件句、某些表示祝愿的句子、以及某些让步状语从句,等等也要用倒装句式。例如:
(省略了if的虚拟条件句)Had they not helped us, we could not have done it so successfully.
如果没有他们的帮助,我们不可能把那件事办的如此成功。
Should he come, say "Nobody in" to him.
万一他来了,对他说:"公司没人。"
(某些表示祝愿的句子)May our friendship last forever.
愿我们的友谊常存!
May your company become prosperous.
祝贵公司生意兴隆!
(某些让步状语从句)Try as I might, I couldn't lift the stone.无论我使多大的劲,我也无法搬起那块石头。
They said they would follow the Party's lead come what might.
他们说无论发生什么情况,他们都会跟党走的。

7) 由于修辞或是平衡句子的原因也可以用倒装句;也可以不用。这不是一条必须的规定。
Next to this one is another grand hotel which is beautifully decorated .
家饭店隔壁还有一家装修华丽的大饭店。
On either side of the great avenue stood many block buildings.
这条大街的两侧都耸立着许多综合楼。(这类句子也可以不用倒装句。)
"I'm leaving for Beijing tomorrow," said Tom to his mother (OR: Tom said to his mother) .
汤姆对他妈妈说:"我明天动身去北京。"
Many block buildings stood on either side of the great avenue.
许多综合楼耸立在这条大街的两侧。
Another grand hotel, which is beautifully decorated, is next to this one .
这家饭店隔壁还有一家大饭店,那家饭店装修十分华丽。


完全倒装与部分倒装:
1.完全倒装(Full Inversion):又称"全部倒装",是指将句子中的谓语全部置于主语之前。此结构通常只用于一般现在时和一般过去时。
谓语+主语+……
①There be(的各种形式)+主语(+地点或时间状语)
例子:
There was a drop in the temperature.温度下降了
There are brids singing in the tree.鸟儿在树上唱歌。
②副词小品词+谓语动词+名词主语+……
③过去分词或现在分词+be的各种形式+主语+……
2.部分倒装(Partial Inversion)(又称半倒装句):
指将谓语的一部分如助动词或情态动词倒装至主语之前,而谓语动词无变化。
如果句中的谓语没有助动词或情态动词,则需添加助动词do,does或did,并将其置于主语之前。
英语句子的倒装一是由于语法结构的需要而进行的倒装,二是由于修辞的需要而进行的倒装。
前一种情况,倒装是必须的,否则就会出现语法错误;
后一种情况,倒装是选择性的,倒装与否只会产生表达效果上的差异。
倒装的作用:
通常是希望强调句中的某一部分
1. 当以there, here, out , in , up , down, away 等副词开头的句子,为了起到强调的作用,可构成倒装句,只把副词放在句首,主语和谓语位置调换,不加助动词。
Our teacher came in.
In came our teacher.
这种倒装要求:主语必须是名词。主语是人称代词时,主语和谓语语序不变。
Here it is.
Away he went.
这类倒装句式一般只用一般现在时和一般过去时。
Here comes the bus.
Out rushed the boys.

2. how, then, just, often 表示时间的副词放在句首,可构成倒装句,只把副词放在句首,主语和谓语位置调换,不加助动词。
Then came 8 years of the Anti Japanese War.

3. 表地点状语的介词短语放在句首,要用倒装句式,以示强调。
这种倒装句也是主谓直接调换位置,不加助动词did, does或do.
Under a big tree sat a fat man  half asleep.

4. there放在句首时,要用倒装句式。
在“there + be”结构中的谓语动词有时不用be , 而用表示类似“存在”观念的其他不及物动词。如:
live, stand, come, lie, flow, enter, rise 和appear等。
There came shouts for help from the river.
There lies a large wheat field in front of the house.
Many years ago there lived an old man in the wooden house.
In front of the tower flews a stream.

5. so + 动词+主语
neither/ nor + 动词+主语
表示两人的同样一个情况时,只能表示一件事,即上、下句所使用的动词、时态要一致。
否则要用so it is with…
You can ride a bike. So can I .
He has been to Beijing. So have I .
The first one isn’t good, neither is the second.
His uncle is a worker and has been working in the factory for more than ten years. So it is with his aunt.

6. so+ 形容词/副词that 的结构状语从句可以用正常语序表示,也可以把so+形容词/副词放于句首构成倒装。
句型如下: so +形容词/副词+be/助动词/情态动词that +从句。
Light travels so fast that it is difficult for us to imagine its speed.
= So fast does light travel that it is difficult for us to imagine its speed.
So easy was the work that they finished it in a few days.

7. done做形容词在句中做表语时,常把表语放在句首,要用倒装句式。
Gone forever are the days when the Chinese people had to use foreign oil.

8. 否定副词not , never, seldom, nowhere, little , rarely 放于句首时要用倒装句式。
We seldom get up at four in the morning.
= Seldom do we get up at four in the morning.
Not a single word from him could the enemy drag.
Rarely have I heard of such a silly thing.

9. hardly…when; scarcely…when…; no sooner…than… 可以用正常语序 had hardly done when… did 或用倒装句式Hardly had + 主语+ done when… did 句式。
hardly所在的句子用过去完成时。
The bell hardly had rung when the class began.= Hardly had the bell rung when the class began.
No sooner had he arrived in Beijing than he began to work.

10. not only… but also 如连接两个成分时,不用倒装;连接句子时,前面的句子要用倒装。
Not only was everything that he had taken away from him, but also his German citizenship.
Not only is he busy, but also I have a lot of work to do.
Not only does he speak English very well, but also he speaks French well.

11. only 及所修饰的副词、介词短语或状语从句放在句首时,要用:
only+ 状语+ be /助动词/情态动词+主语及其他
Only when he told me the news did I know what had happened.
Only in this way can you make progress in your English.

12. 虚拟语气中的倒装句
If I were you, I would take the job. = Were I you, I would take the job.