英语it的用法

1、指代前面提到过的事物

This is not my book It’s Jim’s

2、指婴儿或不明身份的人

Someone is knocking at the door Please go and see who it is

3、用作形式主语，常用于下列句型中。

（1）It’s+ adj + (for sb)to do sth 做某事是…

It’s important for us to work hard

（2）It’s time to do /for sth 到该做…时间了

It’s time to get up/for lunch

（3）It seems that… 看起来好像…

It seems that he is quite happy

（4）It’s one’s turn to do sth 轮到某人做某事

It’s your turn to sing

(5) It’s + adj + that从句

It’s necessary that you should be present at the meeting

4、作形式宾语

Do you think it necessary to learn to wait in line(排队)

5、引导强调句型

It is/was + 被强调部分（主语/宾语/状语）+ that/who +其他成分

It was on that cold night that we saw an exciting film (状语)

It is who/that am right (主语)

It was him that/who we met at the school gate（宾语）

It 的 用 法 1 要点提示 it可以用作人称代词，它还可以指时间、天气、距离、上下文等，另外，it还可以作先行词，作形式主语和形式宾语。 2 用法指南 (1)作为人称代词，it可以用来指东西、动物、婴儿和未确定身份的人。 Where's my book Have you seen it 我的书在哪里？你看见了没有？ The dog is in the garden, isn't it狗在花园里，是吧？ The baby cried because it is hungry婴儿哭了，因为他/她饿了。 (Someone is ringing)Who's it It's me (有人在按门铃。)谁呀？是我。 (2)it 可以指上下文内容 The Olympic Game will be held in Beijing in 2008 It makes the Chinese proud 2008年将在北京举行奥运会。这使得中国人非常自豪。 (3)it表示时间、天气、距离等。 What time is it now It's half past nine现在几点了？九点半 It is cold天气冷。 It's about ten kilometers from the park to the museum 公园到博物馆大约是十公里。 (4)it用作形式主语或形式宾语 It's very important for us to learn English well(实际主语是to learn English well) 对我们来说，学好英语很重要。 I found it hard to fly a kite (实际主语是to fly a kite)我发现放风筝很难。 it 代词 pron 1 (指已提及或心目中的人或事物)这,那,它 This is our new car I bought it yesterday 这是我们的新车。我昨天买的。 2 (指无生命物、动植物、性别不详的幼孩等)它 What a beautiful baby -- is it a boy 多漂亮的孩子啊--它是男孩吗 3 (作无人称动词的主语,表示时间、气候、距离等) It's about 50 kilometers from here to my ranch 从这儿到我的牧场约有五十公里。 It's early yet 还早呢。 It's very hot 天真热。 4 (置于句首或句中,引导后面的短语或从句) I'd think it well worth while to go 我觉得很值得一去。 5 (作为形式上的主语或宾语,用于表示强调的句型中) But here it's my word that counts 但这里是我说的话算数。 6 (用于某些动词、介词后面,词义含糊,构成习惯语) Don't lord it over your friends 不要对你的朋友摆威风。

It的用法（专项总结）

一、人称代词

1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复:

①They watched the train until it disappeared in the distance

2，也可以指动物或婴儿(未知性别的婴儿或孩子):

②Is this your dog？No, it isn’t

③They got a baby and it was a ten-pounder

3，也可指抽象事物或指抽象环境和情景:

③I hate it when people talk with a full mouth．

二、非人称代词

1it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等：

⑴指天气：It is a lovely day, isn’t it ⑵指时间: It was nearly midnight when she came back

⑶指日期:It is April First today ⑷指距离:It is some 3000 kilometers from A to B

⑸指价值:It is three dollars ⑹指温度:Today it is 30 degrees centigrade

三、其他用法

1在句子的主语不太明确时充当主语，表示谁在做某事：

①Who is it there It's I (me/you/he) ②I thought it was Mary, but it was not she

③Her face lighted when she saw who it was

2泛泛的指某件事： (有时泛指一般情况)

①It doesn’t matter ②It is a shame, isn’t it ③How is it going(情况怎样)

④It says in the newspaper that

3it用在一些词组中，it 没有特别的意思

The last train's gone Come on, we'll foot it(来，咱们步行吧。)

四、作形式主语，替代主语从句，动词不定式，或动名词短语：　

1作形式主语替代主语从句

⑴It is clear ( obvious， true， possible， certain) that 从句 常译为＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂

It is very clear that he’s round and tall like a tree = That he’s round and tall like a tree is very clear

⑵It is important ( necessary， right， strange， natural) that 从句 常译为┅是重要的(必要的,对的,奇怪的,自然的┅)that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。

①It is important that we (should) learn English well②It is necessary that he (should) remember these words

⑶It is said (reported/ learned/believed/thought/known/told/hoped) that 从句 常译为＂据说（据报道，据悉．．．）＂。

①It is said that he has come to Beijing ②It is reported that another earth satellite has been put into orbit

⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded ) that 从句that　后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为＂据建议；有命令．．．）

①It is suggested that the meeting ( should ) be put off

②It was ordered that we ( should ) arrive there in two hours

⑸It is time ( about time ，high time ) that从句(虚拟语气:动词用过去时did)

① It is time that children went to bed

⑹It is the first ( second ) time that从句(从句用现在完成时 have done )

It was …(从句用过去完成时had done )常译为＂是第一（二）．．．次．．．＂。

It is the first time I have been here = This is the first time I have been here

⑺It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/ ) that从句

that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。没有这种意义时，则不用虚拟语气。

①It is a pity that such a thing ( should ) happen in your class 这种事竟然发生在你们班上，真是遗憾！

②It is a pity that he is ill 他生病了，真遗憾！

⑻It happens (seems， looks， appears ) that从句常译为 “ 碰巧…,似乎是…,看起来…”

①It happened ( so happened ) that he met his teacher in the street 碰巧．．

②It seems that he will be back in a few days 看来．．．

2作形式主语替代不定式　

⑴ It is kind ( of sb ) to do sth 不定式的逻辑主语是由 of引起，主句中的形容词必须是能表示逻辑主语特征的褒义或贬义形容词。 常见的词有：

bad ， brave ， careless， clever ， cruel ， foolish ， good （好心的）， honest ， horrible ， kind ， lazy ， modest ， naughty ， nice（有教养的）， polite， rude ， silly ， stupid ， wise ， wrong（错误的）等。 这个句型可以改写为：sb is kind to do sth 。　 如:It is kind of you to say so = You are kind to say so

⑵It is necessary ( for sb ) to do sth 不定式的逻辑主语是由for引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的中性形容词。 常见的形容词有：

important， necessary， natural easy ， safe ， common ， normal ， hard ， difficult ， dangerous ， unusual， rare ， impossible ， pleasant

如:It is important for her to come to the party = It is important that she (should ) come to the party

⑶It takes sb to do sth 常译为＂做．．．要花费某人．．．＂。

如:It took thousands of people many years to build the Great Wall

3作形式主语替代动名词短语

It is no good / no use / useless doing sth 常译为 “┅有好处或没有用”

①It is no good learning English without speaking English

②It's useless trying to argue with Shylock

五、作形式宾语，代替不定式，动名词短语或宾语从句。

We think it important to learn a foreign language

该句型中的it 作形式宾语，该结构中常用的动词有：think, believe, make ,find consider, feel； 如:

We think it our duty to clean our classroom every day

He felt it important learning English well

They found it difficult that they would finish their work in two days

The Internet makes it easier for companies to keep in touch with customers

CF: keep sth, in mind / keep in mind that

六、it的重要句型

1强调句型: It is/was + 被强调部分 + that 从句 (被强调的主语如果是人，that可以由who换用)

①It was about 600 years ago that the first clock with a face and an hour hand was made

②It was they that (who ) cleaned the classroom yesterday

特例:It is not until + 被强调部分 + that 该句型也是强调句型。主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是 not until 的强调形式。

It was not until she took off her dark glasses that I realized she was a famous film star

此句话的意思是：在希腊曾经有下雪么？你这么问就是涉及到it的用法了，我自己罗列了这些吧：

1。表示未知的人或是事，例如有人敲门，你在屋里不知道对方是谁的时候要不用it

2。一些客观的事物：天例如天气，所以此句话中的it就代表天下雪这种情况！

it还有很多用法，建议你去书店查查有关语法书专门介绍一些词语的解释和用法的

“It” 用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点，因此在复习中应给予足够的重视。现将it用法归纳如下：

一、It用作实词

表达以下概念:指代前文提到的事物，前文中的this, that；替代前文中的内容；指代一位性别不明的小孩或未知的人；指代未指明但谈话双方都知道的那件事；指代时间、天气、气候、距离等自然现象。

二、It用作形式主语

替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。

It 作形式主语的常见句型：1 代作主语的动词不定式，其句型为（1）It be adj (for sb) to do sth

（2）It be adj of sb to do sth

（3）It替代作主语的动名词的常见句型：

It’s no good/use doing…

It’s (well)worth doing…

It’s (well)worth one’s while doing/to do It’s (well)worth while doing/ to do

2 It替代作主语的从句常见句型

（1）It is + noun +从句

（2）It is adj +clause

It’s surprising that… (should)………竟然……

It’s a pity/shame that…(should)………竟然…

（3）It verb sb + clause= It is v-ing + clause

It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/please/anger sb that…

（4）It verb (to sb) that…= sb/sth verb to do

(verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work out)

（5）It is v-ed that…=sb/sth is to do

(verb=say, report, think, believe, hope, expect, agree, accept, decide, determine, intend, plan, understand, know）

四、It 作形式宾语

用来替代作宾语的从句、动词不定式、动名词，而把真正作宾语的从句、动词不定式、动名词置于句尾。

It 作形式宾语的常见句型：

1 verb+ it+ adj/noun (for/of) to do/clause (verb=think, believe, suppose, consider, feel, make, keep…)

五、强调句型

It is/was+被强调部分+ that(who)… 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who。

在使用强调句型时需注意以下几点：

1 请注意强调句型的特殊疑问句

2 在强调原因状语从句时，只能强调由because所引导的从句。

3 在强调not … until结构时必须把not与until一起放到被强调的位置上。

4 注意强调句型与定语从句的区别。

六、It 常用的固定搭配

it是个代词，可以做人称代词和非人称代词。

做人称代词时：

1，代替全面已提到过的事物，避免重复

例如：where

is

my

book

it

is

on

the

desk

2,

用于指动物或性别不详的婴儿，以及指代不明确的人。

例如：Look

at

the

baby

it's

my

nephew

The

door

bell

is

ringing

who

is

it

3,用于指抽象事物。

例如：thank

you

for

your

help,

i'll

never

forget

it

做非人称代词时：

1，it可以指天气、时间、地点、温度、距离等。

2，可以充当形式主语和形式宾语。

例如：it

is

important

to

study

English

3，强调

例如：It

was

my

teacher

who

called

my

up

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