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CHAPTER3 PLACES OF INTERESTLanguageit的用法的用法Have a try!1.The baby is crying. Can you give _ some milk?A.he B. she C. it D. one 2.Someone is knocking at the door. Whos _?A. he B. she C. it D. one CClIt可以用来指东西、动物、婴儿和未确定可以用来指东西、动物、婴儿和未确定身份的人。身份的人。3._ is about fifteen minutes walk from my home to my school.A.That B. This C. It ClIt表示时间、天气、距离等表示时间、天气、距离等Its 6 oclock.It is a fine day, isnt it？It takes my fifteen minutes to walk from my home to my school.4。_ is necessary for students to take sports an hour per day.5._ is impolite of you to argue with your mum.6.Some girls find _ difficult to learn math well. A.that B.this C.it ClIt可用作形式主语或形式宾语可用作形式主语或形式宾语l think/feel/find/guess/imagine + it + adj+ to do sth. CClIt构成的常考句型构成的常考句型1.Its no good/use spending much time on computer.2.Its fun walking and cycling in Guilin.3.Its a waste of time and money playing games online.3.Its the first time that I have got first prize.4.Its ten years since we first met each other.uIt is nine oclock.uIt is summer now.uIt rained heavily all day.uIt is only a fifteen-minute walk from my home to my school. It is an empty subject. time season weather distanceIt is often used to refer to time, season, weather or distance.1. Whats the weather like today?2. Whats time is it now?3. What day is it today?4. What season is it?5. How far is it from your home to the school?A1. Answer these questions quickly using it as the subject.1. now/for supper/it/ time/is _2. it/is/in Australia/what season/ now _A2. Put the words in the correct order to make meaningful sentences.It is time for supper now.What season is it in Australia now?3. about five kilometers/it is/to the park _4. windy/was/it/yesterday _It is about five kilometers to the park.It was windy yesterday.It can also be used as the empty Subject of a sentence to replace a to-infinitive or a gerund.It is also great fun walking and cycling in Guilin. It took a long time to build the wall. It is also possible to go hiking on the Great Wall in some other places.(=Walking and cycling in Guilin is also great fun.)(=To build the wall took a long time.)(=To go hiking on the Great wall in some other places is also possible.)不定式和动名词区别不定式和动名词区别不定式不定式强调具体的或特定的或有待强调具体的或特定的或有待于实现的动作于实现的动作动名词动名词表常见性的动作表常见性的动作Painting is an art.To let Tom paint is too much for him.B1. Complete the dialogues with the words in the box using it and the to-infinitive. Add other words as necessary.easy/pass difficult/climb interesting/do important/learn1. DEBBIE: How did you find your trip to Huangshan? SIMON: _ the mountains for the first time.It is difficult to climb2. DEBBIE: I am not worried about the exam next week. SIMON: Neither am I. _ it.It is easy to pass3. DEBBIE: _ English well? SIMON: Yes, of course. It is such a useful language.4. DEBBIE:Will you work as a waiter in the coming summer? SIMON: Yes. _ part-time jobs in the summer holidays. Is it important to learnIt is interest to do1. Visiting the museum was a lot of fun. _2. Eating fruit and vegetables is healthy. _3. Watching too much TV is no good. _B2. Change the following sentences using it as the subject.It was a lot of fun to visit the museum.It is healthy to eat fruit and vegetables.It is not good to watch too much TV.代词代词it的用法归纳的用法归纳This is not my book. It is Jims._1、指代前面提到过的事物。、指代前面提到过的事物。-Whats this ? -Its a pencil. -Whats that? -Its a picture._2、代替指示代词、代替指示代词this或或thatSomeone is knocking at the door. Please go and see who it is.It is a lovely baby._3、指婴儿或不明身份的人、指婴儿或不明身份的人-Whats the time now? -Its ten oclock._4、表示时间或季节、表示时间或季节-Whats the weather like today? -Its fine. _5、表示天气、表示天气How far is it from your school to your home?_6、表示距离、表示距离_a.Its +adj. +(for/of sb.) to do sth.（对某人来（对某人来说），做某事是说），做某事是 Its important for us to work hard.b.Its time to do/for/that到该做到该做的时间了的时间了 Its time to get up/ for lunch.c.It seems that看起来像看起来像 It seems that he is quite happy.d.Its ones turn to do sth.轮到某人做某事轮到某人做某事 Its your turn to sing.7、用作形式主语，常用于下列句型中、用作形式主语，常用于下列句型中e.Its +adj. +that从句从句Its necessary that you should be present at the meeting. _ Do you think it necessary to learn to wait in line?8、作形式宾语、作形式宾语think/feel/find/guess/imagine + it + adj+ to do sth _It was on that cold night that we saw an exciting film.9、引导强调句型、引导强调句型It is/was +被强调部分被强调部分+that/who/whom+其他成分其他成分
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