4. 情况，如：

　　 It was noisy when he got to the classroom.

　　 III引导词

3．距离， 如：

　　 ---- How far is it from our school to the post office?

　　 ---- It is about five minutes’ walk.

2．季节，时间，如：

　　 1)It’s six o’clock.

　　 2)It’s autumn now. The days are getting shorter and shorter.

1．自然现象(天气，气候，明暗等)，如：

　　　 It’s snowing( pouring, dark, cold, late)

4．it所指的东西不很具体，有时指做某个动作的人或引起某种情况的事物。

　　 1)---- who is knocking at the door?

　 　　----It’s me.

　　 2) It’s the wind shaking the tree.

　　 II作无人称代词

3．用以代替指示代词this 或that

　　 1)----What’s this?

　　 ----It’s a flag.

　　 2) ---- Whose book is that?

　　　 ----It’s mine.

2．代替有生命但不分性别的人或东西。

　　　 They had a baby and it was named Tom.(代替前面的baby)

高考语法训练

It 的用法

　　 I作人称代词

1．代替单数名词或分句所表示的事物

1)My pen is missing. I can’t find it anywhere.

　 (代替前面的pen)

2) Although we can not see it , there is air around us.

　 (代替后面的air)

3) English is important and you will realize it some day.

　 (代替第一个分句)

3.dialogues

　　　 Zhou : A student　　　　 Sun :an English teacher

　　　 Zhou: Hello.　 Mr. Sun, how are you?

　　　 Sun: I’m fine, thanks! And how are you?

　　　 Zhou: I’m quite well, thank you. By the way, I was just thinking of going to

　　　 ask you about some problems with my English. But I wonder if you will be free

　　　 next week.

　　　 Sun: Some problem? Well ,do come to see me then.

　　　 Zhou: Thank you. What time will suit you?

　　　 Sun: Well, any time from Wednesday to Saturday will quite all right.

　　　 Zhou: Can we make it Thursday then?

　　　 Sun: OK. 8:00 on Thursday morning, all right?

　　　 Zhou: Yes. That’s very kind of you. Thank you.

　　　 Sun: you’re welcome. See you then

2. All right. See you then.

　　　 Yes, I’m/ I’ll be free then.

　　　 Yes, that’s all right.

　　　 No, I won’t be free, but I’ll be free at…