(完整版)it的用法及句型总结,推荐文档

It的用法

一、Tell the functions for “it” in each sentence:

1、---What’s the weather together?

---It is fine.

2. It is hard to communicate with him.

3. I find it hard to communicate with him.

4. It is Li that who cleaned the classroom.

5. It is a book.

二、It 用法归纳

1，指代it （1）.用作人称代词：指代物、整个句子

（2）用作非人称代词

2，形式it：（1）作形式主语（2）作形式宾语

3，强调it

4，特殊句型

5.在答语中指代this/that：

1).---Whose book is that? ---It’s mine.

三、特别注意：it,one和that作替代词的用法及区别

1.it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。(特指，指代单数，指代物，同名同物)

Can I borrow your pen?—Sorry，I’m using it.

2.one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。（泛指，指代可数名词，指代人或物，同名异物）

I have a bike. Do you have one?

Eg:

(1).I bought a dictionary three years ago and I am still using______ now.

(2) I bought a dictionary three years ago but I am going to buy a new _______soon.

(3).that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。（特指，指代单数或不可数，指代物，后面有定语）

The coffee produced in Brazil is more famous than __________in Mexico.

四：形式主语、宾语、强调句及其他

1、形式主语It

It is important to give the money back to him on time. 不定式

It is no use arguing with such a person. 动名词

It is said that he was the No.1 in the competition. 主语从句

it作句子的形式主语, 后面被指代的主语包括：

不定式

动名词

主语从句

It替代作主语的动名词

It‘s no good/use doing…

It's(well)worth doing…

例It's no use crying over spilt milk.

形式主语中的虚拟语气

1.It is important ( necessary，strange，natural...) that ...

It is important that we (should) have enough rice.

2.It's surprising that…(should)………竟然……

例It's surpring that you should apologize to her without any reason.

3.It is suggested ( ordered /demanded/insisted/commanded... ) that ...

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．．．）

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

5.It is a pity ( a shame ... ) that ...

that后的从句一般用虚拟语气（should + 动词原形），常译为“竟然”。没有这种意义时，则不用虚拟语气。

例如；It is a pity that such a thing ( should ) happen in your class.

6、It is adj ( for sb. ) to do sth.

important，necessary，natural ，impossible ，unusual ，rare ，normal ，easy ，hard ，difficult ，dangerous ，pleasant ，likely,right,wrong,,,clear,

obvious,certain,suitable,proper,useful,等、

7. It is adj ( of sb. ) to do sth.

good （好心的），nice（有教养的），polite，kind ，brave ，careless，honest ，modest ，considerate,naughty ，wise ，clever ，thoughtful,careful,crazy，bad ，lazy ，rude ，cruel ，foolish ，silly ，stupid ，.等。

这个句型可以改写为：sb. is adj to do sth. 。

It is kind of you to say so.

= You are kind to say so.

2、形式宾语it

I think it important to give the money back to him on time.

I find it no use arguing with such a person.

I knew it when he left without saying a word.

it 作形式宾语时，句子的真正宾语是：

不定式

动名词

宾语从句

固定句型：

1、owe it to sb.that…把…归功于…

2、see to it that:务必.../负责...

3、I like (enjoy, hate，dislike…) it when….: 我喜欢/讨厌...

4、I would appreciate it if…：如果...我将不胜感激

5、keep it in mind that…把…记在心里

6、I like (enjoy, hate…) it when….

7、I would appreciate it if…

3、强调句it

It is/was+被强调部分+that(who)…

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。

4、其他含有it的句式

It is time ( about time ，high time ) that ...

例如：It is the first ( second ... ) time that ...