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1、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可以用來指東西、動物、嬰兒和未確定可以用來指東西、動物、嬰兒和未確定身份的人。身份的人。3._ is about fifteen minutes walk from my home to my scho

2、ol.A.That B. This C. It ClIt表示時間、天氣、距離等表示時間、天氣、距離等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 mat

3、h well. A.that B.this C.it ClIt可用作形式主語或形式賓語可用作形式主語或形式賓語l think/feel/find/guess/imagine + it + adj+ to do sth. CClIt構成的?？季湫蜆嫵傻某？季湫?.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 h

4、ave 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 dis

5、tance.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

6、 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

7、 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

8、hiking on the Great wall in some other places is also possible.)不定式和動名詞區(qū)別不定式和動名詞區(qū)別不定式不定式強調具體的或特定的或有待強調具體的或特定的或有待于實現的動作于實現的動作動名詞動名詞表常見性的動作表常見性的動作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

9、 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: _ E

10、nglish 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 heal

11、thy. _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.代詞代詞it的用法歸納的用法歸納This is not my book. It is Jims._1、指代前面提到過的事物。、指代前面提到過的事物。-Whats

12、 this ? -Its a pencil. -Whats that? -Its a picture._2、代替指示代詞、代替指示代詞this或或thatSomeone is knocking at the door. Please go and see who it is.It is a lovely baby._3、指嬰兒或不明身份的人、指嬰兒或不明身份的人-Whats the time now? -Its ten oclock._4、表示時間或季節(jié)、表示時間或季節(jié)-Whats the weather like today? -Its fine. _5、表示天氣、表示天氣How far i

13、s it from your school to your home?_6、表示距離、表示距離_a.Its +adj. +(for/of sb.) to do sth.（對某人來（對某人來說），做某事是說），做某事是 Its important for us to work hard.b.Its time to do/for/that到該做到該做的時間了的時間了 Its time to get up/ for lunch.c.It seems that看起來像看起來像 It seems that he is quite happy.d.Its ones turn to do sth.輪到某人做

14、某事輪到某人做某事 Its your turn to sing.7、用作形式主語，常用于下列句型中、用作形式主語，常用于下列句型中e.Its +adj. +that從句從句Its necessary that you should be present at the meeting. _ Do you think it necessary to learn to wait in line?8、作形式賓語、作形式賓語think/feel/find/guess/imagine + it + adj+ to do sth _It was on that cold night that we saw an exciting film.9、引導強調句型、引導強調句型It is/was +被強調部分被強調部分+that/who/whom+其他成分其他成分