Unit2Grammarandusageit的用法

1、Unit 2 Grammar and usage(2) 2015.3.9一 学习目标1. Learn how to use “it” as empty subject.2. Master some sentence structures with “it”.3. Learn about the differences between it, one, ones,that and those. 二、学习导航1. Review the function of “it”.1) Its a book. 2) Its over ten oclock. 3) Its raining outside. 4)

2、 Its a long way to the museum. 5) It is quite difficult to find ones family history.6) Do you consider it necessary to send more people to help them? 7) It was at midnight that he heard a crying softly.2. Empty subject “it”:1. We can use it as an empty subjectA. when we use a noun clause as the subj

3、ect of a sentence.1) That we would not be able to understand Old English today is certain.=2) Whether English will continue changing in the future is easy to answer=3) When we use certain words depends on the style of writing.=B. when the subject is a to-infinitive.To master a foreign language is ha

4、rd.=C. when the subject is a v-ing form.Wandering in the countryside is fun.=D. “It” can also used before seem, appear, happen, turn out and prove as the preparatory subject of a sentence.1) He seems to be enthusiastic about drawing.=2) My new neighbour happens to come from my hometown.=Multiple cho

5、ices：1) _ is a fact that English is being accepted as an international language. (NMET1995) A. There B. This C. That D. It2) I like_ in the autumn when the weather is clear and bright. （04全国卷I） A. this B . that C. it D. one 3) The chairman thought _ necessary to invite Professor Smith to speak at th

6、e meeting. A. that B. it C. this D. him 3. It 用法固定句型 A. 1) It is Prof. Li who teaches us English.2) It is English that Prof. Li teaches us. 3) It was in Shanghai that I saw the film.B. It took Mary 20 minutes to choose a suitable dress for the party.C . It is the first time in history that two Nobel

7、 Prizes have been awarded to the same person.D. It is/has been three week since I last heard from him. E. It is time for us to give the house a thorough cleaning. It is time that we gave the house a thorough cleaning.4. 替代词it, one, ones, that, those1)The vase on the left is more beautiful than _ on

8、the right.2) The coffee produced in Brazil is more famous than _in Mexico.3) His younger sister is taller than the elder _.4) I need the plastic bags, not the paper _ .5) I like the vase better than _in another shop.6) The windows of your flat are cleaner than _of mine.7) A grandparents job is easie

9、r than _of a parent.8) The computers in our school are connected to the Internet while _ in their school arent.知识点：1) that替换_；Those指代_, 不带前置定语，但必须有后置定语。one只替换_; one/ones替换表示_和表示_的名词皆可。2) that/ those用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。The style of the building is similar to _of a temple.A CD player made

10、 in Japan costs more than _made in China.3) it/that/oneI bought a dictionary three years ago and I am still using_ now.I bought a dictionary three years ago but I am going to buy a new _soon.It 指代同名同物。One 指代前面提到的类似的事物，不是同物，而且one之前或之后有修饰语。3、 我的困惑 4、 课堂检测（一）1._ is a fact that English is being accepted

11、 as an international language. A. There B. This C. That D. It2. I dont think _ possible to master a foreign language without much memory work. A. this B. that C. its D. it3. Does _ matter a lot whether she will come here by bus or by taxi? A. The thing B. that C. it D. her mother4._ is possible that

12、 he will succeed in his experiment. A. This B. It C. Its D. There5._ is possibility that he will succeed in his experiment. A. This B. It C. Its D. There6. It was not _ she took off her dark glasses _I realized she was a famous film star .  A. when ; that B. until ; that C. until ; when D. when

13、 ; then 7. -_ Mr. Bob changed his mind to take part in the movement? - After he listened to the speech by Mr. King. A. When was that it B. When was it that C. When was that D. When was it8. _has already been pointed out , grammar is not a set of dead rules .  A. As B. It C. That D. This9._

14、 has already been pointed out that grammar is not a set of dead rules.A. As B. It C. That D. This10. It was at seven forty-five _ he finished his homework.A.When B. that C. after D. before11. It was seven forty-five _he finished the work .  A. when B. that C. after D. before12. 1.That was reall

15、y a splendid evening . It is years _ I enjoyed myself so much. A.when B. that C. before D. since课堂检测（二） 高考链接1、Someone is ringing the doorbell. Go and see _. (全国2000) A. who is he B. who he is C. who is it D. who it is 2、The photographs will show you _（MET1989） A. what does our village look like B. w

16、hat our village looks like C. how does our village look like D. how our village looks like 3. It is strange that he _ you this. A. would tell B. should tell C. had told D. has told4. What the doctors really doubt is _my mother will recover from the serious disease soon. (上海2001) A. when B. if C. whether D. why5. Great changes have taken place in that school. It is no longer _it was 20 years ago, _ it was so poorly equipped. （05安徽) A. wha