高中英语课件-it的用法

1、Good afternoon, everyone! It is never too old to learn. It is easier to fall than to rise. It is no use crying over spilt (溢出的) milk. It never rains but it pours(泼水). Proverbs(谚语) with “It”活到老, 学到老。摔倒容易爬起来难。覆水难收。不鸣则已, 一鸣惊人。 It is easy to open a shop but hard to keep it always open. It takes three ge

2、nerations (代,辈) to make a gentleman. 创业容易守业难。十年树木，百年树人。Grammar: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. ItsIt 2.用于代替指示代词this 和that。-Is this jacket yours?-Yes, _is.itRead and analyze the following sentences.It is Friday today.It

3、 was very cold last Monday. It is about 8:30 now. It is about 25km from A to BIt lies in the south of Shihezi city.It is 40C ! Its very hot . Conclusion :it 可以用作非人称代词，表示_,_,_,_,_,_等。DateweathertimedistanceplaceTemperature 日期天气时间距离地点温度e.g: a. Jim is at the door_wants to see you b. Someone is at the d

4、oor_must be Jim A. That, It B. It, He C. He, It D. Who, HeC一般说来，在指代身份或性别明确的人时，通常要根据情况用代词heshe；若是指代身份或性别不明的人，则用代词it1. I cant find my pen. Im going to buy _.2. Life today is better than _ in the old days.3. I cant find my pen. I must have lost _. _用来指代前面提到的可数名词，所指的是事物本身；_则用来替代前面出现过的可数名词，泛指，指一类事物中的一个 .

5、_用来代替不可数名词或单数可数名词，特指。onethatit itonethat一、 It 作形式主语当不定式、动名词、从句等用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it.it s no good smoking. 吸烟没有好处。Its up to you to decide it. 这件事由你来决定。It doesnt matter what you do. 你干什么都没有关系2022/8/2eg:It is illegal（for people) to drive a car without a license.It is necessary for

6、you to give him a letter.Conclusion：在句1和句2中 it 的作用是_ ,真正主语是_。形式主语不定式短语（1）It +be +adj.+（for sb.）to do sth.此处adj. 通常为描述事件的形容词：easy,difficult，hard，necessary，impossible，likely，right，wrong，important，obvious，useful，useless，dangerous2022/8/2（2）It +be+ adj+ of sb. to do sth此处adj. 通常为描述人的形容词：kind，unkind，nice

7、，rude，cruel，careless，foolish，stupid，wise，crazy.eg:1. Its kind of you to help me with the problem.某人做某事，某人是.2 Its foolish of you to quit your job now.2022/8/2eg.3.It is no good leaving today work for tomorrow4.It is no use crying over spilt milk .Conclusion在句3与句4中，it的作用是_, 真正主语是_.形式主语动名词短语构成如下结构：It i

8、s +no use/no good/not any good/not any use+ doing sth. Read and analyze the following sentences.It is obvious that the water was to blame.Is it possible that he will become the chairman of our country?It is amazing that at my age I still look like a student!Analysis：it是_ ,句子真正的主语是_形式主语that引导的主语从句Con

9、clusion：It is+ _+ that从句adj.跟踪训练1：It is+ adj. + that从句很明显他已经知道了那个坏消息。姚明篮球比易建联打得好是肯定的。It is obvious that he has known the bad news.It is certain that Yaoming plays basketball better than Yijianlian.It is said that 据说 It is reported that It is supposed that It is hoped that It is well known that 据报导据推

10、测希望众所周知普遍认为有人建议It is said (reported.) that .It is suggested thatIt is generally considered that该句型中的it 仍是形式主语，真正主语是that引导的主语从句。 1.据说日本发生了地震。 2.有人建议他应该立刻戒烟。3. 吸烟危害健康，这是事实。 4.碰巧我们在同一间大学 。 It is a fact that smoking does harm to health.It happens that we are in the same college. It is said that_ he shou

11、ld quit smoking at once._there is an earthquake in Japan.It is suggested that二、it作形式宾语1. I found it very interesting to study English.我发现学英语非常有趣。 2. I think it no use arguing with him.我认为和他争吵没有用。 3. He made it clear that he was not interested in this subject.他非常清楚地表示他对那门学科不感兴趣。 小结： it在句中充当_，真正宾语可以由_

12、 以及_短语充当。还可以由_引导的宾语从句充当。不定式动名词that形式宾语 总结：当复合宾语中的宾语是不定式、动名词、宾语从句时, 往往把真正的宾语放在它的补足语后面，而用it 作形式宾语, 放在宾语补足语之前。 该句型中的it 作形式宾语, 常用的动词有think, believe, make, find, consider, feel等。 三、it 用在强调句中 1. It was yesterday that I met your father in the street 2. It is I who/that am your English teacher 3. It was in

13、the street that I met your father yesterdayConclusion: It is/was + 被强调部分 + that . 使用该句型有以下几点请注意 强调句的谓语is或was永远用单数. It was yesterday that I met your father in the street不管被强调部分是哪种状语，只能用that连接，不得使用where、when等连词. It was in the street that I met your father yesterday被强调部分为人时，可用who(主格或宾格)和whom(宾格)代替that，

14、用that也行。It was your father that/whom /who I met in the street yesterday2) It was I that/who met your father in the street yesterday强调句中 也要注意主谓一致、人称一致和否定转移的问题。It is they who are our friendsIt was not until ten oclock that we got home last night常见的固定用法有:make it成功，做到，赶上等forget it别提了，忘了它吧believe it or n

15、ot信不信由你Dont mention it别提了，表示不用谢It doesnt matter没关系It(That) depends视情况而定Got it明白了，懂了Its hard to say很难说 Its up to you to do sth.由你来决定做某事take it/things easy不要慌，别担心，沉住气Rewrite the sentences using an “it” structure.1 Giving up smoking is difficult. (It is)2 Most people believe smoking causes cancer. (It

16、is believe that)3 Dont try to quit your learning. (Its no use)4 you could suffer from bad health if you keep smoking. (It is likely that)It is difficult to give up smoking.It is believed that smoking causes cancer.It is no use trying to quit your learning.It is likely that you could suffer from bad

17、health if you keep smoking. One midnight, was raining heavily.Mary was lying in bed.She couldnt fall sleep. Suddenly, she heard someone knocking at the door.“Who is ?” She asked.She looked at the clock hung on the wall. was striking two. “ is me.”One man answered. “ was impossible for him to appear

18、here.”she thought. “John?Is_ you?” “Yeah! is me”the man answered. She rushed to open the door.John was just standing in front of her.He said to Mary excitedly, “I missed the plane. was said that the plane I would take crashed down three hours ago. It was in that plane I should have gone to New York.

19、 After this, I think clearly that I love you so much I want to be marry you.”ititItItItItItit thatthat/whichthatthatFill in the blanks走进高考1. (2005, 全国) The doctor advised Vesa strongly that she should take a holiday, but _ didnt help. A. it B. she C. which D. he 正确答案：A。根据句意：医生的建议未起作用。it代替整个句子。 2. (2

20、004,全国) -Do you like_here? -Oh, yes. The air, the weather, the way of life. Everything is nice. A. this B. these C. that D. It 正确答案：D。根据下文，提问者不能确定被问者喜欢什么，it用于不确定指代或模糊指代。 3. (2000,上海) Someone is ringing the doorbell. Go and see_. A. who is he B. who he is C. who is it D. who it is 正确答案：D。说话时，不知道对方的性别

21、。注意在宾语从句中需用陈述语序。 4. (2007, 全国)Have you heard the latest news? No, what _? A. is it B. is there C. are they D. are those 正确答案：A。it指代上文提及的latest news。5. (2006,全国) If I can help _, I dont like working late into the night. A. so B. that C. it D. them 正确答案：C。help是“阻止、避免”的意思，it指代下文的事情。6. (2002,北京) -He was

22、 nearly drowned once.-When was _? -_ was in 1998 when he was in Middle School. A. that, It B. this, This C. this, It D. that, This 正确答案：A。it指时间。 7. (2005，浙江) Weve been looking at the houses but havent found _ we like yet. A. one B. ones C. it D.them 正确答案：A。表示任意一幢房子。 8.（2005，江苏）Im moving to the count

23、ryside because the air there is much fresher than _ in the city. A. ones B. one C. that D. those 正确答案：C。分析语境和逻辑关系可以知道：该空指代the air，且有in the city后置定语修饰。9. (2004,北京) The Foreign Minister said, “_ our hope that the two sides will work towards peace. A、This is B、There is C、That is D、It is 正确答案：D由句意易知：tha

24、t从句是真正的主语;it为形式主语。10. (2005,上海)_in the regulations that you should not tell other people the password of your e-mail account. A. What is required B. What requires C. It is required D. It requires 正确答案：C 。it为形式主语，在此结构中done为required/suggested/demanded/recommended等时，从句必须用should + 动词原形，且should可以省略。11. (

25、2004,上海春) It was foolish of him to _ his notes during that important test, and as a result, he got punished. A. stick to B. refer to C. keep to D. point to 正确答案：B。短语辨析题，refer to有“参考”的意思，符合句意。12. (2006,全国) It is no _ arguing with Bill because he will never change his mind. A. use B. help C. time D. w

26、ay 分析：正确答案：A。为固定结构。13. (2007,天津)He didnt make _ clear when and where the meeting would be held. A. this B. that C. it D. these 正确答案：C。it为形式宾语，clear后的从句为真正的宾语。14. (2006,湖南)As the busiest woman in Norton, she made _ her duty to look after all the other peoples affairs in that town. A. this B. that C.

27、one D. it 正确答案：D。真正宾语为不定式。 15. (2005,江苏)Dont you think it necessary that he _ to Miami but to New York? I agree, but the problem is _ he has refused to. will not be sent; that B. not be sent; thatC. should not be sent; what D. should not send; what 正确答案：B。表示“理应如此”需用should动词原形，should可以省略。在做it形式宾语和形式主

28、语的复合句中如果从句表示的是“惊奇、惋惜或者理应如此”等含义时，需用should动词原形，should可以省略。16、(2004,全国) I like _ in the autumn when the weather is clear and bright.A、this B、that C、it D、one 正确答案：C。love/enjoy/hate和like的用法相同，后接宾语从句时需用it作形式宾语，宾语从句后置。 17、(2003,上海) I would appreciate it _ you call back this afternoon for the doctors appoin

29、tment.A、until B、if C、when D、that正确答案：B。18. (1998，上海) Dont _ that all those who get good grades in the entrance examination will prove to be most successful. A. take as granted B. take this for granted C. take that for granted D. take it for granted 正确答案：D。take it for granted that 意为：想当然的认为某事。it为形式宾语

30、，真正的宾语为that从句。另外我们也应该注意：depend(rely) on it（相信某事）和see to it（负责某事）的用法。 19. (2008,全国) It was in New Zealand _ Elizabeth first met Mr. Smith. A. that B. how C. which D. when 正确答案：A。将it was去掉句子结构完整，易知是考查it的强调句型。20. (2004,福建) It was with great joy _ he received the news that his lost daughter had been fou

31、nd. A. because B. which C. since D. that正确答案：D。 21. (1997,全国) Was it _ that I saw last night at the concert? A. you B. not you C. yourself D. that yourself 正确答案：A。强调句型的一般疑问式的基本结构为：Is/Was it+被强调部分+that将该句恢复为陈述语序，去掉It is/wasthat结构，易判断是强调you的强调句型。22. Is _student _was caught smoking in the classroom? A.

32、 it that, that B. that it, it C. it it, that D. it which, that 正确答案：A。 23. (2004,上海) Why! I have nothing to confess. _ you want me to say? A. What is it that B. What it is that C. How is it that D. How it is that 正确答案：A。强调句型的特殊疑问式的基本结构为：wh- +is/was it that +其它成分，故选B。24. (2005,山东)-_ that he managed t

33、o get the information? -Oh, a friend of his helped him. A. Where was it B. What was it C. How was it D. Why was it 正确答案：C。 25. (2007,浙江) It _ we had stayed together for a couple of weeks _ I found we had a lot in common. A. was; when B. was that; that C. wasnt until; when D. wasnt until; that 正确答案：D

34、。易判断这是考查not until的强调形式。 26. (2008，重庆) It was not until midnight _ they reached the camp site. A. that B. when C. while D. as 正确答案：A。 27. (2007,山东)Where did you get to know her?It was on the farm _we worked. A. that B. there C. which D. where正确答案：D。答句完整形式应为：It was on the farm where we worked that I g

35、ot to know her.28. -Who made such a stupid mistake?-_Tom. A. It was B. He was C. That was D. There was 正确答案：A。答句完整形式应为：It was Tom who made such a stupid mistake.29. It was the university _ he was teaching _ sent him to America. A. which; that B. where; that C. that; which D. that; had 正确答案：B。本题是考查：i

36、t was +university + 引导的定语从句+ that。30. (2007,陕西) It is not who is right but what is right _ is of importance. A. which B. it C. that D. this正确答案：C。本题是考查强调句型和名词性从句连用。31. (2006,辽宁) It was after he got what he had desired _ he realized it was not so important. A. that B. when C. since D. as 正确答案：A。本题是考查

37、强调句型和状语从句连用。32. It might have been Tom _ bought John a new pen yesterday.A. what B. since C. that D. then正确答案：C。去掉It might have beenthat句子仍然是完整的，所以选C。33、(2008, 北京) Im sorry youve been waiting so long, but itll still be some time _ Brian gets back. A. before B. since C. till D. after正确答案：A。It be + 时间

38、 + before 表示过了一段时间才34. (2006,福建) How long do you think it will be _ China sends a manned spaceship to the moon?-Perhaps two or three years. A. when B. until C. that D. before 正确答案：D 35、(2005,安徽) That was really a splendid evening. Its years _ I enjoyed myself so much. A. when B. that C. before D. since 正确答案：D。 36、(2006,四川) Its thirty years since we last met. -But I still remember the story, believe it or not, _ we got lost on a rainy night. A. which B. that C. what D. when 正确答案：B。 易判断本题是考查同位语从句。37. (2006,重庆) Isnt it time you got down