英语-it做形式主语或宾语的用法ppt课件

1、It used as the Formal Object and Formal subject He found it difficult to stop smoking I think it best that you should do more exercise.She thought it no good worrying about himIt作方式宾语替代_、 _、 _。不定式不定式动词动词-ing短语短语从句从句1.It 用作方式宾语用作方式宾语 当_、_、_在句子中作宾语时，为坚持平衡，防止句式构造的混乱，常用it作方式宾语，而将真正的宾语放在句尾。此时it只起引导作用，无意义

2、。S + vt + it+adj.n(for sb) to do sth.从句从句doing sth+We think it our duty to clean our classroom every day. He felt it no good learning English without speaking English. They found it difficult that they would finish their work in two days.不定式短语不定式短语 动名词短语动名词短语从句从句S + vt + it+adj.nS + vt + it+adj.n+S

3、+ vt + it+adj.n+S + vt + it+adj.n(for sb) to do sth.从句从句doing sth+S + vt + it+adj.n作方式宾语作方式宾语为了记忆方便我们把该句型总结为为了记忆方便我们把该句型总结为6123构造构造。 6指主句中常用的动词：指主句中常用的动词：_； 1指的是方式宾语指的是方式宾语:_； 2指的是宾补的两种方式：指的是宾补的两种方式：_； 3指的是真正宾语的三种方式：指的是真正宾语的三种方式：_ think believe make find consider feelit描画词或名词描画词或名词不定式短语，动名词不定式短语，动名词

4、短语或从句短语或从句1.The fact that she was foreign made _difficult for her to get a job in that country . A. So B. much C. that D. it 2. The doctor thought _good for you to have a holiday . A. this B .that C . one D . It 3. I dont think _ possible to master a foreign language without much memory work. A. thi

5、s B. that C. its D. itIt 作方式宾语的特殊用法 1) 某些表示“喜、怒、哀、乐的动词，如_等后往往不能直接接宾语从句；必需先由it担任方式宾语,再接从句.要是他们能帮我们这个忙，我们将非常赞赏。要是他们能帮我们这个忙，我们将非常赞赏。 We would much _if you could do us that favor.要是我不用完成那项任务，那就太好了。要是我不用完成那项任务，那就太好了。 Id _if I didnt have to finish the work.prefer ,like, enjoy, love, hate, dislike, appreci

6、ateappreciate itprefer it 2).某些含有介词的动词短语如某些含有介词的动词短语如_等构造中往等构造中往往不能直接接宾语从句；必需先由往不能直接接宾语从句；必需先由it担任方式宾担任方式宾语语,再接从句再接从句.我将担任按时做好一切预备。我将担任按时做好一切预备。Ill see to _that everything is ready in time.他放心，汤姆会协助他学英语的。他放心，汤姆会协助他学英语的。 You may depend on _.我指望着他会来。我指望着他会来。Im counting on it_.see to, depend on, count

7、on ,answer for, rely on, insist on, look to, stick toitit that Tom will help you with your English.that you will come.实战练习实战练习高考真题高考真题1. I like _ in the autumn when the weather is clear and bright. (MET2019) A. this B. that C. it D. one2. I hate _when people talk with their mouths full. (MET98) A. i

8、t B. that C. these D. them3.I dont think _ possible to master a foreign language without much memory work. A. thisB. thatC. its D. it4.We consider _ a beautiful city to visit in autumn.A. that B. it C. this D. what完成句子1 They _觉察难 to finish their work in two days. 2 We _以为是我们的职责 to clean our classroo

9、m every day. 3 Her parents think it important _对她来说 to come to the party. (4) I do not think it necessary _ (答应他的朋友去野餐) found it difficultthink it our dutyfor her to promise his friend to go on a picnic.Translation1我发现做好这件事不容易。_2我以为他最好住这儿。_3 我们以为埋怨是没有用的。_4) 我以为讪笑他人是不礼貌的。_I find it difficult to do th

10、e job well.I think it best that you should stay here.We think it no use complaining.I think it not polite to laugh at others.It is amazing that at my age I am still fit .It is easy to become addicted to smoking .it is no good crying over spilt milk. (覆水难收) It 作方式主语作方式主语替代不定式、动词替代不定式、动词-ing短语、或从句。短语、

11、或从句。Sentence pattern:方式主语，顾名思义，即方式上是主语，但实践上不是真正的主语，真正的主语是后面的_、_或_等。为了防止句式上呵斥“头重脚轻，句式不平衡，故往往用it作方式主语，而把真正的主语放在后面。it在这里没有任何意义。 to doV-ingthat clause(for sb) to do sth.从句从句doing sth+It + is/wasadj.n Complement 1). It + be + 描画词描画词 + for sb.+ 动词不动词不定式定式 这类句型常用描画词这类句型常用描画词_等等作表语，有时候为了强调不定式动作的执作表语，有时候为了强调

12、不定式动作的执行者，常在不定式前加行者，常在不定式前加for sb， Its necessary for the young to master two foreign languages.easy, difficult, hard, important, possible，wise2). It + be + 描画词描画词 + of sb. + 动词不定动词不定式，这类描画词常是表示心思质量式，这类描画词常是表示心思质量,性格性格特征的描画词，如：等。某人和这些描画特征的描画词，如：等。某人和这些描画词可以构成主系表构造。如：词可以构成主系表构造。如：Its very kind of you

13、to help me with the work.=You are kind to help me.kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerateIt is _to learn Chinese.对于一个外国人来说，学习汉语是困难的。Its_ to learn English well.学好英语对我们来说是重要的。It was _to give up the job.他放弃那任务是愚笨的。difficult for a foreignerimportant for usfoolis

14、h of himSection A . Choose the best choice.1. Is _ necessary to complete the design before National Day?A. this B. that C. it D. he2. Does _ matter if he cant finish the job on time?A. this B. that C. he D. it3. Toms mother kept telling him that he should work harder, but _ didnt help. A. he B. whic

15、h C. she D. it4. _ is a fact that English is being accepted as an international language. A. There B. This C. That D. It5. _ happened _ he is unfit for the office.A. This; that B. That; that C. It; that D. He; that. Complete the sentences.1. 对他来说，假设想获得胜利，不要随便放弃是很重要的。_ if you want to achieve success.

16、2. 我们中的一些人瞧不起残疾人是错误的。Its wrong that some of us _ the disabled. 3. 我以为讪笑他人是不礼貌的。 I think its _. impolite to laugh at othersIt is very important for you not to give up easilylook down upon. Translation 1. 恰好那天我不在那里。_2. 别给孩子太多的钱很重要。_3. 我的职责就是扫地。_4. 他每天花半个小时乘公共汽车上班。_ It takes him half an hour to go to w

17、ork by bus. =It takes him half an hour to take the bus to work It happened that I wasnt there that dayIt is very important not to give children too much moneyIt is my duty to clean the floor.Section B1. _ that the scientist will give us a talk next month?A. Is true B. Is it true C. Its true D. Its t

18、ruly2. _ doesnt matter much _ dress you are going to wear.A. This; that B. That; who C. It; which D. It; who3. _ is going to America for further study.A. He is said that B. People said that heC. It was said he D. It is said that he4. They are good friends. _ is no wonder that they know each other so well.A. This B.