高考英语it用法

高考英语it用法（精选6篇）

篇1：高考英语it用法

◆it 用法 精编陷阱题训练◆

1.Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.A.it B.that C.one D.which 2.He made _____ known to his friends that he didn’t want to enter politics.A.that

B.it C.himself D.him

3.It used to be thought _____ the Earth was flat.A.as

B.when C.since D.that

4.The Parkers bought a new house but ______ will need a lot of work before they can move in.A.they

B.it

C.one D.which

5._______ is well known _______ Hong Kong returned to China on July 1st, 1997.A.It, that C.As, as

B.As, /

D.It, which

6.— I don’t know whether I should go abroad or not, Mum.— I leave _______ to your own judgment whether you should do it.A.that B.it C.this D.what

7.Does ________ matter if he can’t finish the job on time? A.this B.that C.he D.it

8.They are good friends._______ is no wonder that they know each other so well.A.This C.There

B.That D.It

9.They live on a busy main road.______ must be very noisy.A.There B.It C.That D.They

10.Why don’t you bring ______ to his attention that you are too busy to do it?

A.this C.that

B.what D.it

11.“Look at that lady on the stage.She’s already forty.” “You are joking.She doesn’t look ________.”

A.so C.that

B.it D.this

13._______ was known to them all that William had broken his promise ______ he would give each of them a gift.A.As;Which B.What;that C.It;that D.It;which

14.In the west, people make _______ a rule to send Christmas present to their relatives and friends.A.this B.that C.it D.the following

【 it 用法 答案与解析】

1.选C。one 指 a coat。比较：it = the +名词，one = a+名词，换句话说，it 是特指的，而one 则是泛指的。

2.选B。it 为形式宾语，真正的宾语是 that he didn’t want to enter politics。3.选D。it 为形式主语，此句为 People used to think that the Earth was flat 的被动语态形式。

4.选B。it 指前面提到的 new house。注意不能选D，因为其前有并列连词but。

5.选A。it 为形式主语，其后的that从句为主语从句。比较下面一题，答案选B： _______ is well known, _______ Hong Kong returned to China on July 1st, 1997.A.It, that B.As, / C.As, as D.It, which

6.选B。it 为形式宾语，真正的宾语是 whether you should do it.7.选 D。it doesn’t matter if…, does it matter if… 等为英语常用表达。8.选 D。it’s no wonder that… 意为“难怪……”、“……不足为怪”，为英语固定表达，其中的 it’s 也可省略，即只说 No wonder that…。如：

No wonder(that)he didn’t want to go.难怪他不想去。9.选B。it 指环境。

10.选 D。it 为形式宾语，真正的宾语是 that you are too busy to do it.12.选 B。it 指 her age。look one’s age 为习语，意为“容貌与年龄相称”。13.选C。第一空填 it，为形式主语；第二空填that，用以引导一个同位语从句，修饰 promise。

14.选 C。it 为形式宾语，真正的宾语是其后的不定式 to send Christmas present to their relatives and friends。

篇2：高考英语it用法

◆典型陷阱题分析◆

1.Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.A.it, it

C.it, what B.what, what D.what, it

【陷阱】很容易误选B，认为两空均考查形式主语。

【分析】最佳答案是D，第一空填形式主语，真正的主语是其后的不定式 to play with fire。第二空填 what，what is difficult 是主语从句，注意 what is difficult 后的谓语动词 is。请做以下类似试题：

(1)I know ______ is important to know my own limitations, but _______ is difficult is to help others to know their own limitations.A.it, it

C.it, what B.what, what D.what, it

(2)Yes, ______ is difficult to find a job nowadays, but _____ is more difficult is try to find such a job with a high salary but little things to do.A.it, it

C.it, what B.what, what D.what, it

2.I dislike _______ when others laugh at me in public or think poorly of me behind.A.that

C.it

【陷阱】几个干扰项均有可能误选。

【分析】最佳答案是C，因为在通常情况下，like 是及物动词，其后应有宾语(句中 it 即为其宾语)。句中的 when 从句不是宾语从句，而是时间状语从句，其中的 when 的意思是“当……的时候”。其实，也有的词典将 I don’t like it when(if)… 作为一个句型来处理。能这样用的动词不多，主要的有enjoy, like, dislike, love, hate, prefer, appreciate等表示喜好的动词。

She won’t like it if you arrive late.她不喜欢你迟到。

He hates it when people use his bike.他讨厌别人用他的自行车。B.those D.them

请做以下类似试题(答案均选 it)：

(1)I hate _______ if people say such things in public.A.thatB.those C.it

D.them

(2)I’d prefer _______ if I didn’t have to get up early on Sundays.A.that C.it

B.such D.which

(3)I would appreciate _______ very much if you could give me some suggestions.A.this C.it

B.that D.you

3.I’ve no idea.I just pretended nobody was at home, so I didn’t ask who _______ was.A.he C.she

【陷阱】容易误选A或C。

【分析】最佳答案是D。it 用以指身份不明的人。若指身份明确的人，则不宜用it。比较：

(1)Mr Smith is at the door._______ wants to see you.(2)Someone is at the door.________ must be Mr Smith.A.HeB.It C.This

D.That B.that D.it

第(1)题选A，因为来者身份明确；第(2)选B，因为来者身份不明确。4.“Excuse me, I want to have my watch fixed, but I can’t find a repair shop.” “I know ________ nearby.Come on, I’ll show you.”

A.one C.some

【陷阱】容易误选B。

【分析】最佳答案是A。it 和 one 的区别可简单地概括为：it = the + 名词，one = a + 名词。如：

I haven’t got any pens, and I want to borrow one.我没有钢笔，我想借一支。(one = a pen)I have two pens, and I can lend one to you.我有两本支钢笔，我可以借一支。(one = a pen)

B.itD.that

I have a pen, and I can lend it to you.我有一本钢笔，我可以把它借给你。(it = the pen)在上面一题中，one 相当于 one 相当于 a repair shop。请做下面一题（答案选A）： There is only one English-Chinese dictionary in that book-shop.I wonder if you still want to buy _______.A.it C.another

B.oneD.any

5.Will you see to _______ that my children are taken good care of while I am away? A.it

C.yourselfD.them

【陷阱】几个干扰项均有可能误选。

【分析】最佳答案是A。it 为形式宾语，真正的宾语是空格后that引导的宾语从句。see to 意为“负责”、“注意”，其中的 to 为介词，不宜直接跟that引导的宾语从句，遇此情况可借助代词 it。请做下面两题，答案也是选 it：

(1)I’ll see to _______ that all these letters will be sent to the post before twelve.A.it C.which

B.me D.them B.me

(2)Will you see to _______ that the luggage is brought back as soon as possible? A.me C.it

B.yourself D.them

类似以上 see to 用法的短语还有 depend on, answer for 等。如下面两题答案也选 it：(1)You may depend on _______ that he will turn up in time.A.it C.which

B.me D.them

(2)I can’t answer for ________ that the boy is honest.A.it C.which

◆精编陷阱题训练◆

1.Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.B.me D.them

A.it C.one

B.thatD.which

2.He made _____ known to his friends that he didn’t want to enter politics.A.that C.himself

B.it D.him

3.It used to be thought _____ the Earth was flat.A.as C.since

B.when D.that

4.The Parkers bought a new house but ______ will need a lot of work before they can move in.A.they C.one

B.itD.which

5._______ is well known _______ Hong Kong returned to China on July 1st, 1997.A.It, thatB.As, / C.As, as

D.It, which

6.— I don’t know whether I should go abroad or not, Mum.— I leave _______ to your own judgment whether you should do it.A.that C.this

B.it D.what

7.Does ________ matter if he can’t finish the job on time? A.this C.he

B.that D.it

8.They are good friends._______ is no wonder that they know each other so well.A.This C.There

B.That D.It

9.They live on a busy main road.______ must be very noisy.A.There C.That

B.It D.They

10.Why don’t you bring ______ to his attention that you are too busy to do it?A.this

B.what

C.that D.it

11.“Look at that lady on the stage.She’s already forty.” “You are joking.She doesn’t look ________.”

A.so C.that

B.it D.this

13._______ was known to them all that William had broken his promise ______ he would give each of them a gift.A.As;Which C.It;that

B.What;that D.It;which

14.In the west, people make _______ a rule to send Christmas present to their relatives and friends.A.this

C.itD.the following

◆答案与解析◆

1.选C。one 指 a coat。比较：it = the +名词，one = a+名词，换句话说，it 是特指的，而one 则是泛指的。

2.选B。it 为形式宾语，真正的宾语是 that he didn’t want to enter politics。

3.选D。it 为形式主语，此句为 People used to think that the Earth was flat 的被动语态形式。

4.选B。it 指前面提到的 new house。注意不能选D，因为其前有并列连词but。5.选A。it 为形式主语，其后的that从句为主语从句。比较下面一题，答案选B： _______ is well known, _______ Hong Kong returned to China on July 1st, 1997.A.It, that C.As, as

B.As, / D.It, which B.that

6.选B。it 为形式宾语，真正的宾语是 whether you should do it.7.选 D。it doesn’t matter if…, does it matter if… 等为英语常用表达。

8.选 D。it’s no wonder that… 意为“难怪……”、“……不足为怪”，为英语固定表达，其中的 it’s 也可省略，即只说 No wonder that…。如：

No wonder(that)he didn’t want to go.难怪他不想去。9.选B。it 指环境。

10.选 D。it 为形式宾语，真正的宾语是 that you are too busy to do it.12.选 B。it 指 her age。look one’s age 为习语，意为“容貌与年龄相称”。

13.选C。第一空填 it，为形式主语；第二空填that，用以引导一个同位语从句，修饰 promise。

篇3：浅谈高中英语中it的用法

新课标全国卷Ⅰ的第35题:

It was a real race________time to get the project done.Luckily, we made it.

A.over B.by

C.forD.against

(选D, it作形式主语和习惯用法)

新课标全国卷Ⅱ的第10题:

It was only after he had read the papers_____Mr.Gross realized the task before him was extremely difficult to complete.

A.whenB.that

C.whichD.what

(选B, it构成强调句)

北京卷的第35题:

—You need not take an umbrella.It is not going to rain.

—Well, I do not know.It_____do.

A.mightB.need

C.wouldD.should

(选A, it指代天气)

天津卷的第11题:

It was not until near the end of the letter_____she mentioned her own plan.

A.that B.where

C.whyD.when

(选A, it构成强调句) 等等。

在高中英语的各种考试中, 许多试题都涉及到it的用法, 而且, 相当多的题目也考到了it的用法。比如, 在听力、完形填空、阅读理解、书面表达中, 等等。

下面, 我结合我多年的中学英语教学经验, 简单谈一谈高中英语中it的用法。

基本用法有以下几种。

It可以指代人。

例如:Hello, Jim, it is Jane here.

Hi, it is me.

it也可指代物。

例如:I would like to give you some advice on your study.It might help you.

My pen is missing.I can not find it.

it可以代替this或that。

例如:—Whose pen is that?

—It belongs to Jack.

—What is this?

—It is a dictionary.

it可以指代时间、日期、地点、天气、距离等等。

例如:—What is the time?

—It is nearly seven pm.

It is a long way from here to your hometown.

在高考英语中, it的用法也会体现在以下几个方面。

it作形式主语。例如:It is no use crying over the spilt milk.

It is a pity that you were late for the conference again.

It is challenging to teach the young English well.

It was disappointing that he failed in that exam.

It is strange that he (should) be late for school.

We would have got here earlier if it had not been for the heavy rain. (it在此处指特殊事情, 构成强调句)

i t作形式宾语。例如:I find it hard to get along well with such a man.She thought it an easy job to write an English well.

一些特殊用法, 如article like, hate, appreciate等少数动词后。例如:I like it when it is clear and bright in late autumn.

I hate it when people talk with their mouths full.

I will appreciate it if you can offer me some help.

it用在强调句中。常用的强调句结构为:It is/was+被强调部分+that/who/whom+句子的其他成分。例如:It was yesterday that he was punished by his father.

It is Tom that/whom/who you should turn to.

当然, 考查的形式是多样的。例如:It was not until then that he realized the importance of knowledge.

It was in the book___/___my father bought for me that I found the answer to your question.

—Where did you find your pet?

—It was in the factory where my father worked (that I found my pet) .

另外, it也可用于一些习语中。如:to make it=to succeed in doing something;to see to it that+从句;I have got it;That it is.I can not stand it any longer.

上述是我个人结合自己教学的经验所谈的一点体会, 而且我认为, 对于英语词汇的全面理解, 有助于学生英语学习中的对于文章和题目的正确理解, 同时更有助于学生做题。

总而言之, 作为一名教师, 在给学生授课时, 应该以学生为本。比如, 在上述的举例以及平时的教学中, 我都以引起学生的兴趣为出发点, 从而让学生在心情愉快的情况下去学习, 渐渐地提高学生的学习热情, 使得他们主动去学习, 最终学有所成。

参考文献

[1]朗文当代高级英语辞典.2004年7月第1版

[2]普通高中课程标准试验教科书第6册.2007年4月底

[3]薄冰大学英语语法.2010年1月开明出版社出版

篇4：解读高考考点,直击“it”用法

(04 I卷)27. I like ____ in the autumn when the weather is clear and bright.

A. this B. that C. it D. one

解析：选C。

(04 II卷)32. “Do you like ____ here?” “Oh, yes. The air, the weather, the way of life. Everything is so fine.”

A. this B. these C. that D. it

解析：选D。此类常见动词有like/hate/love/enjoy，当其后接when/if从句时，从句前应有it。如：I hate it when people talk with their mouths full．。

(05 I卷)35. The chairman thought ____ nece- ssary to invite Professor Smith to speak at the meeting.

A． that B． it C． thisD． him

解析：选B。it作形式宾语,真正宾语是to invite…meeting。

(06 I卷)26. If I can help ____, I don’t like working late into the night.

A. soB. thatC. itD. them

解析：选C。help it是惯用法，常与can/could连用，“避免，阻止”。

(07 I卷)21. “Have you heard the latest news?” “No, What ____?”

A. is itB. is thereC. are theyD. are those

解析：选 A。it指代前文提到的news。

(07 II卷)7. ____ felt funny watching myself on TV.

A. OneB. ThisC. ItD. That

解析：选C。it作形式主语, 真正主语是watching…TV。

(10 II卷)14. The doctor thought ____ would be good for you to have a holiday.

A. thisB. thatC. oneD. it

解析：选D。it作形式宾语, 真正宾语是to…holiday。

“it”在近年高考中出现频率之高，可见其重要性。如何在考试中减少失误？希望下面总结对你有所帮助。

一、指心目中或上下文中的人或物。

“Who is it?” “It’s me, Li Tao.”

二、指无生命的东西，不明身份或性别的人。

They got a baby. It was three months old.

三、表示时间、天气、距离、温度等。

It is raining./It’s quite a long way.

四、形式主语：不定式、动名词及从句作主语时，为避免“头重脚轻”，用it作形式主语，而将真正主语置后。

It is strange that nobody knows how old he is．

其中，不定式和从句作真正主语很常见，在It’s no good/no use/useless/senseless/worthwhile/ dangerous/waste…后动名词作真正主语。

五、形式宾语：不定式、动名词、从句作宾语又有宾补时，用it作形式宾语，而把真正宾语置后。常用动词有:find， think, believe, suppose, consider, feel, make, keep, feel, make…等。

I found it important to learn English well.

六、为了强调句子中的某一成分(除谓语外)，可用“It is/was＋被强调部分＋that/who＋…”的句型。

It was Mary that/who I saw in the street this morning.

注：强调句型中,把It is/was和that/who去掉后,句子意义仍完整。

七、习惯用语：

1. make it做到；赶上；约定时间

The task is too hard. We will never make it.

Let’s make it 15th.

2. see to it that…注意；留神；确保

See to it that everything is ready.

3. as it is用于句前, “事实上”；用于句末, “照原样”。

I thought he would be better, but as it is he is getting worse.

Leave the room as it is.

4. as it were可以说;某种程度上

He is, as it were, a walking dictionary.

5. Keep at it!干下去！

6. You’ll catch it!你可小心点儿！（警告）

7. fight it out 决一雌雄，辩个明白

篇5：英语it 用法总结

一些含有IT的习惯用语需要牢记,以下是一般对方都熟知的,无须要明确指出来.

For example:

1.Cab it (乘车)

2.brave it out (拼命干到底)

3.walk it (步行)

4.go it alone (单枪匹马地干)

5.beat it (走,滚)

6.make it (办成功)

7.come it (尽自己之分内事情)

8.come it strong (做得过分)

9.lord it over (欺压)

10.take it (猜想,以为,断定;[口][常与 can, be able to 连用]忍受得住(痛苦、批评、困难, 嘲笑等))

11.take it out of somebody (拿某人出气)

12.have it out with somebody (与某人讲个明白)

13.be hard put to it (在艰难之中)

14.Is that it? (你就要我做这些吗?= Is that all you wanted me for? )

15.You’re it. (你是下一个)

7、引词IT

(1)IT用做引词

A.形式主语

a.真实主语为不定式

For example:

It was his duty to attend to the matter. (处理那事是他的责任)

It was not within my power to answer the question. (我无能力回答这个问题)

b.真实主语为不定式复合结构

For example:

It is getting harder every day for a lazy man to get a living. (懒汉谋生是日益困难了)

What time would it be most convenient for me to call again? (何时我再给你打电话最合适?)

It’s very good of you to have listened to me. (感谢你,能听我讲.)

It’s very thoughtful and kind of you to offer me this lovely holiday. (您能给我这么美好的假日实在是想得太周到和太友善了)

c.真实主语为动名词

For example:

It’s no use saying any more about what I think. (我如何想的再说也没有用了.)

Do you think it’s worth while quarrelling with me? (你认为与我吵架值得吗?)

d.真实主语为动名词复合结构

For example:

It has been a great honor your coming to visit me. (你的来访是我很大的荣幸.)

It would have been so bad her overhearing. (她如果偷听到那就糟糕了.)

I’m afraid it vexes her my having brought Roly.(我恐怕我带罗力来使她生气了)

e.真实主语为主语从句

For example:

It seems that he is rich.. (看起来他很富有.)

It doesn’t matter what you do.(你干什么都没有关系)

It was clear enough what she meant.(她的意思十分清楚)

He was an old man, and it did not matter much where he lived.(他年事已高,在哪儿居住都无所谓)

It’ a pity he doesn’t swim. (他不会游泳,真遗憾)

B.形式宾语

a.真实宾语为不定时

For example:

I find it easy enough to get on with Pam.. (我觉得与帕姆相处很容易.)

I would think it worth while to go.(我认为去是值得的.)

He thought it best to be on his guard. (他认为他最好还是要警惕.)

He made it a rule to speak in Parliament at least once every session. (他规定自己在议会每次开会时至少发言一次.)

He felt it his duty to mention the fact to Mr. Otis. (他觉得把事实告诉奥蒂斯先生是他的职责)

b.真实主语为动名词

For example:

You must find it exciting working here.. (你一定会发现在此工作是很令人兴奋的.)

I think it very unwise going on as we are without definite agreement.(我认为我们没有明确的协议就进行是不明智的.)

He find it a great privation not being allowed to smoke there. (他觉得在那里不能吸烟对他是一大痛苦.)

注：以上例句皆可不用形式宾语,可改写为：

You must find working here exciting.

I think going on as we are without definite agreement very unwise.

He found not being allowed to smoke there a great privation.

c.真实宾语为宾语从句

For example:

I think it best that you should stay here. (我认为你最好留在这里.)

I used to feel it a terrible thing that my mother should have to toil so endlessly. (我曾老觉得母亲不得不无休止地操劳是一件可怕的事情.)

I take it you have been out. (我想你出去过了.)

I took it for granted that you would stay with us. (我认为你当然会留在我们这里的.)

I have it on my conscience that I offended you. (我心里老嘀咕着我得罪了你)

They kept it quiet that he was dead. (对于他的死他们没有透露一丝口风.)

(2)引词IT用于强调结构中

①英语中常用的强调结构是：“It is (was)+被强调的部分(主语、宾语或状语)+ who(that)…”.一般说来,被强调部分指人时用who,指物时用that(但that亦可指人).注意：强调结构在强调状语时,只可用that从句,不可用which.

For example: John wore his best suit to the dance last night.(约翰昨晚他穿着他最好的一套衣服去参加舞会)

It was John who (that) wore his best suit to the dance last night.

It was his best suit (that) John wore to the dance last night.

It was last night (that) John wore his best suit to the dance.

It was to the dance that John wore his best suit last night.

②强调结构也可强调短语和从句(包括because,only when,who,whom,whose,that,which等引导的从句).

For example:

I suspected it was on her orders that you were bringing him here.(我怀疑你是遵照她的吩咐要把他带到这儿来的)

It was because I wanted to buy a dictionary that I went to town yesterday. (我昨天是由于想买一本字典而进城的.)

It is only when you nearly lose someone that you become fully conscious of how much you value them(只有你差一点失去某一个人时,你才会充分意识到你是多么珍视他们.)

It must be your mother who (whom, that) you are thinking of.(你在想的一定是你的母亲.)

It was your brother to whom I offered a dollar for his knife yesterday.(我昨天给了你兄弟1元钱买他的小刀.)

It is Uncle Bill whose address I lost.(比尔叔叔的地址我丢了.)

It deserves attention that it is especially the verb to do which is often found in the active voice.(应该注意, 特别是行为动词常用在主动语态中.)

③表语与宾语补语偶尔也可为被强调的部分.但通常情况下,表语一般不可用作被强调的部分.

For example:

It was a doctor that he eventually became.(他最后成了一个医生)

It’s dark green that we’ve painted the kitchen.(我们把厨房漆成了深绿色)

④强调结构的时态一般应该一致.但也有例外的例子.

For example:

It is not I who am angry.(发怒的不是我.)

I was my two sisters who knew her best(是我的两个姐妹最了解他.)

I will not be you who will have to take the blame for this.(对此受责难的将不是你.)

For exceptional example:

It is Miss Williams who enjoyed reading novels as a pastime. (是威廉姆斯小姐以读小说来消遣.)

It is these very novels that Miss Williams enjoyed reading as a pastime.(威廉姆斯小姐作为消遣所读的小说就是这些.)

⑤强调结构不但可以用于独立句中,也可以用在从句之中.

For example:

It deserves attention that it is especially the verb to do which is often found in the active voice.(应该注意, 特别是行为动词常用在主动语态中.)

I suspected it was on her orders that you were bringing him here.(我怀疑你是遵照她的吩咐要把他带到这儿来的)

He told me that it was liberation that brought about a complete change in his life. (他告诉我是解放才使他的生活有了翻天覆地的变化.)

⑥强调结构中的that 与who在非正式文体中可以省略.有时还可以省去句首的It is (was).

For example:

I suspected it was on her orders you were bringing him here.(我怀疑你是遵照她的吩咐要把他带到这儿来的)

A good, honest trade you are learning, Sir Peter! (彼得爵士,你学得是一种很好而诚实的一行啊!)

⑦强调结构中的被强调部分有时可放在句首.

For example:

Now was it that his life was done, and the fate which he could not escape was upon him.(就在这时,他的生命完结了,他所逃脱不了的命运降临了.)

⑧It is(was)之后可有一个以上的被强调部分.

For example:

篇6：英语强调句及it用法

强调句、It的用法、省略和插入语

一、强调句

（一）强调句句型

1、陈述句的强调句型：It is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who（当强调主语且主语指人）+ 其它部分。

e.g.It was yesterday that he met Li Ping.2、一般疑问句的强调句型：同上，只是把is/ was提到it前面。

e.g.Was it yesterday that he met Li Ping?

3、特殊疑问句的强调句型：被强调部分（通常是疑问代词或疑问副词）+ is/ was + it + that/ who + 其它部分？

e.g.When and where was it that you were born?

4、强调句例句：针对I met Li Ming at the railway station yesterday.句子进行强调。

强调主语：It was I that(who)met Li Ming at the railway station yesterday.强调宾语：It was Li Ming that I met at the railway station yesterday.强调地点状语：It was at the railway station that I met Li Ming yesterday.强调时间状语：It was yesterday that I met Li Ming at the railway station.5、注意：构成强调句的it本身没有词义；强调句中的连接词一般只用that, who，即使在强调时间状语和地点状语时也如此，that, who不可省略；强调句中的时态只用两种，一般现在时和一般过去时。原句谓语动词是一般过去时、过去完成时和过去进行时，用It was …，其余的时态用It is …。

（二）not … until … 句型的强调句

1、句型为：It is/ was not until + 被强调部分 + that + 其它部分 e.g.普通句：He didn’t go to bed until/ till his wife came back.强调句：It was not until his wife came back that he went to bed.2、注意：此句型只用until，不用till。但如果不是强调句型，till, until可通用；因为句型中It is/ was not … 已经是否定句了，that后面的从句要用肯定句，切勿再用否定句了。

（三）谓语动词的强调

1、It is/ was … that … 结构不能强调谓语，如果需要强调谓语时，用助动词do/ does或did。

e.g.Do sit down.务必请坐。

He did write to you last week.上周他确实给你写了信。

Do be careful when you cross the street.过马路时，务必（千万）要小心啊！

2、注意：此种强调只用do/ does和did，没有别的形式；过去时用did，后面的谓语动词用原形。

二、It的用法

（一）作人称代词

1、it代替前面（或后面）的单数名词或分句等所表示的事物。

e.g.You cannot eat your cake but have it.（it代替前面的cake）

Although we cannot see it, there is air all around us.（it代替后面的air）

They say he has left town, but I don’t believe it.（it代替前面They…town分句中的情况）

2、代替有生命但不能或不必分阴阳性的东西（包括婴儿）。

e.g.Yesterday we saw a big tree.It was fully twenty metres high.（it代替前面的tree）

The baby cried because it was hungry.（it代替前面的baby）

3、在某些习惯说法中，可以代替人。e.g.----Someone is knocking at the door, Peter.----Who is it?----It’s me.----Who are singing?----It is the children.----The light is still on in the lab.It must be the third-year students doing the experiment.4、it与one的区别：这两个词都可以代表前面说过的名词，但it用于同名同物的场合；one则用于同名异物的场合。

e.g.----Do you still have the bicycle?----No, I have sold it.----Is this knife yours?----No.It is Xiao Zhang’s.Mine is the one on the desk.5、it与that的区别：两词都可代替某一特定名词，但that指同一类，并非同一个。

e.g.The climate of South China is mild（温和的）;I like it very much.（it指the climate of South China）

The climate of South China is much better than that of Japan.（that指the climate）

（二）作无人称代词

it作无人称代词时，除了句中找不到它所代表的词语外，另一个特点是它后面的内容都是表示天气、时间、距离、度量衡及情况等。

It is fine(rainy, windy, etc.).It is noon.It is a half hour’s walk to the factory.It is eighteen square metres in area.What does it matter?

（三）作强调词，构成强调结构 用以帮助改变句子结构，使句子的某一成分受到强调。“It is(was)+ 所强调的成分 + that(who)+ 其它成分。”在这个句型中，it本身没有词义。详见“

一、强调句”。

（四）引导词it作形式主语（宾语）

为了使句子平衡，常采用形式主语（或宾语）it，而把真正的主语（或宾语）置于句子后面。通常引导词it与它所代替的句子成分中间要夹有某些词。

e.g.It takes half an hour to go there on foot.（It与to go there on foot之间夹有takes half an hour四个词）

We thought it strange that Mr Smith did not come last night.（it与that从句中间夹有 strange）

但有时it与所替代部分之间并不夹有其它词。