中考英语语法：it的9种主要句式

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

一、it代替前面的事物本身它可以代替可数名词,也可以代替不可数名词代替可数名词时,复数形式为they/ them没有增加语义,所以不能带有任何定语二、 one可以代替与前面同类不同一的事物；可以代替某类事物中的任何

it句型是初中英语中使用频率较多的重点句型之一，为了便于同学们搞好中考复习，现将常见有关it的主要句式归纳如下：

1“It is time for……”表示“是……时候了”。句中介词for后接名词或代词作宾语。

如：It’s time for school是上学的时候了。

2“It’s time to do sth”表示“是做某事的时候了”。此句常与上句替换使用。

如：It is time for us to have lunch=It is time for our lunch是我们吃午饭的时候了。

3在“It seems……”句中，seem是不及物动词，常作系动词用，有“好像、似乎”的意思，后面可跟动词不定式、形容词作表语，也可跟从句。

如：It seemed that nobody knew anything about the matter看来没有人知道这件事。

4“It’s one’s turn to do sth” 表示“轮到某人做某事了”。

如：It’s your turn to play ping-pong该轮到你打乒乓球了。

5“It is+形容词+to do sth”表示“做某事怎么样”。其中it作形式主语，代替后面的不定式to do sth(真正主语)。

如：It is easy to speak English 说英语很容易。

6“It is+形容词+for sb+to do sth”意为“对某人来说做某事怎么样”。这种结构中的形容词常常是easy，difficult，hard，important，necessary，quick等，这些形容词常与事物的特征有关。

如：It is quite difficult for us to find out who broke the windows对我们来说，查明是谁打破了窗户是相当难的。

7“It is+形容词+of sb+to do sth”表示“某人做某事怎样”。这种结构中的形容词常常是：good，kind，nice，wrong，clever等，这些形容词常与人的性格特点有关。

如：It is very nice of you to help me find my bike你帮我找到了自行车真是太好了。

8“It takes sb some time to do sth”表示“某人花费多少时间做某事”。其中it是形式主语，真正主语是后面的to do sth。

如：It takes me about half an hour to walk to school every day我每天花费大约半小时步行去上学。

9“sb thinks it+形容词(for sb)+to do sth”中的it是形式宾语，后面的动词不定式是真正宾语，形容词在句中充当宾语(it)的补足语，运用于这种句式的谓语动词有：think，find，believe，feel等。

如：He found it very important for the students to learn English well他发现对于学生来说学好英语很重要。(完)

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