1、The Use of It,The use of “it”,1.用作人称代词，代表前面提到的人或事物。,Whos it? _me. Look at the picture. _is a picture of our school.,Its,It,2.用于代替指示代词this 和that。,-Is this jacket yours? -Yes, _is.,it,3.用以表示时间、距离、天气、气候、季节、环境等,It is half past eight now. Its only half an hours walk from here to our school. I hope that i
2、t will be fine tomorrow. It has rained much this year. Its spring now. Its quiet here.,Time,Distance,Weather,Weather,Season,Circumstance,4.作引导词，在句中作形式主语或形式宾语，代替后面的短语或从句。,Instead of “to do” It is important for us to learn English well. I found it necessary to tell him about the matter.,Sub.,Formal Ob
3、ject,2) Instead of “doing” It is no use quarrelling with him about it. I think it no good talking to her.,3) Instead of “clause” It doesnt matter whether he will come or not. I think it necessary that we will attend the meeting.,5.用于强调句型中,It + be +被强调部分 + that/who(a person)从句,I met Tom in the park y
4、esterday.,1) It was I who met Tom in the park yesterday.,2) It was Tom who I met in the park yesterday.,3) It was in the park that I met Tom yesterday.,4) It was yesterday that I met Tom in the park.,It was five oclock _I got home. It was at five oclock_ I got home.,when,that,1)He didnt come because
5、 he was ill.,It was because he was ill that he didnt come.,2) She didnt go to bed until her father came back.,It was until her father came back that she didnt go to bed.,(wrong),Not until her father came back did she go to bed.,It was not until her father came back that she went to bed.,特殊句式： It is
6、reported that China has launched another man-made satellite. It is ordered that the soldiers should cross the river at once. It seems that he has learnt of the news. It happened that I took no money with me. It matters very much/makes great difference whether to go or not.,据报导,命令,似乎,碰巧,去还是不去大不一样。,6)
7、 It surprised me that he failed to pass the exam. 7) It was not long before he returned to Beijing. 8) How long will it be before he comes back? 9) It will be long before he comes back. 10) It is five years since he joined the Party.,他考试不及格使我感到惊奇。,不久，他就回到了北京。,过多长时间他才回来呢？,再过很长时间他才回来。,他加入政党已经五年了。,Disc
8、uss the following sentences and tell the function of “ it ”:1. Its difficult to remember all their names.2. Its very quiet in the caf. 3. It rained for three days .4. He made it clear that he didnt want to speak to me .5. It was nice to meet you. 6. It was on Tuesday that Smith came.7. Its three mil
9、es from here to the nearest garage.,Exercises,形式主语,代替,Circumstance,Weather,形式宾语,代替,形式主语,代替,用于强调句型中,Distance,8. A tall man stood up and shook hands. It was captain Lawrie.9. I hear you bought a new bike .Can you show it to me ?10. It was five oclock when we got back home yesterday.11. It was dirty and wet below the ship where the slaves were kept. 12. It was on this coast that lots of his people disappeared. 13. It was most likely that one third of them had lost their lives.,人称代词，代表前面提到的人,人称代词，代表前面提到的物,Time,Circumstance,用于强调句型,作引导词，在句中作形式主语，代替后面的从句,Thank you.,