語(yǔ)法it的用法新課標(biāo)人教版選修6Unit3Ahealthylife

1、高二英語(yǔ)語(yǔ)法復(fù)習(xí)課件It的用法的用法 it是常見代詞之一，它既可以指代時(shí)間、地點(diǎn)、天氣、距離等，還能作形式主語(yǔ)或形式賓語(yǔ)，同時(shí)可以引起強(qiáng)調(diào)結(jié)構(gòu)，是歷年高考熱點(diǎn)之一?，F(xiàn)對(duì)其用法作一歸納。一、用來(lái)表示時(shí)間、天氣、地點(diǎn)、距離、環(huán)境、形勢(shì)等。例如： It is two miles to the beach. (Oxford) 這里到海濱有兩英里。It was raining in the morning. (Oxford) 今天早晨下著雨。If its convenient I can see you tomorrow. (Oxford) 如果方便，我明天能見你。it表示時(shí)間常用于句型： 1、It i

2、s/has been一段時(shí)間since 從句。意為“自以來(lái)已有多長(zhǎng)時(shí)間了”或“自不以來(lái)已有多長(zhǎng)時(shí)間了”。例如： 1）It is/has been many years since I was last in London (P. 136 SEFC Book 2B) 自從我上次到倫敦，已經(jīng)有許多年了。2）Its a long time since we met last. (P. 89 JEFC Book 3) 自從我們上次見面以來(lái)已經(jīng)有很長(zhǎng)一段時(shí)間了。2、It is/ was/ will be + 一段時(shí)間 + before 從句。表示“在（做某事）前過(guò)了多長(zhǎng)時(shí)間”，或“過(guò)了多長(zhǎng)時(shí)間才”。如：

3、But it _more than 100 years before the country begins once again to look as it did before. 但是在100年之后，這個(gè)國(guó)家才能恢復(fù)到以前的樣子。will be二、用來(lái)指代人。說(shuō)明某人的身份或者做某事的人；指代嬰兒或兒童；在不清楚某人性別時(shí)，也可使用 it，尤其在問(wèn)答的形式中更為常見。例如： 1. -Look, someone is coming. Who can it be? -It may be the headmaster. -It cant be him. He has gone to Shangha

4、i. -It must be Mr. Zhang. He looks like the headmaster. 2. _Doctor Stone, isnt it? Shes usually good. A.That is B. It is C. This is D. She is3. -Is that Doctor Stone? -Yeah. -Who is _? A. this B. that C. she D. it三、用來(lái)指代前文中的內(nèi)容，或指代整個(gè)主句。如：1. Take your pound of flesh! I declare the court allows it and t

5、he law gives it to you. (P. 63 SEFC Book 3A) 割下你要的那一磅肉吧！我宣布法庭允許你這么做，法律把那一磅肉判給你了。2. If it is possible, hod up the part of the body which is bleeding. (P. 44 SEFC Book 2A) 如果可能的話，就把出血的部位抬起來(lái)。3. I was disappointed with the film ，I had expected _ to be much betterAthat Bthis Cone Dit4. Toms mother kept t

6、elling him that he should work harder, _ didnt help. A.he B. which C. she D. but it 5. It is said that in Australia there is more land than the government knows _. A. it what to do with B. how to deal with it C. what to do with it D. to do what with 6. The Parkers bought a new house, _will need a lo

7、t of work before they can move in.Abut that Bbut it Cone Dwhich7. I love swimming, _ keeps me fit. A.and it B. which C. it D. as 8. They said they had finished the work, but_.B.I cant believe it B. what I cant believeC. which I cant believe D. I dont believe四、在一些相對(duì)固定的詞組中出現(xiàn)，沒有特殊含義，經(jīng)常不翻譯。如： 1.Hes neve

8、r really made it as an actor. (Oxford) 作為演員，他從未獲得過(guò)真正的成功。2. It is my turn 輪到我了。3. Thats just it-I cant work when youre making so much noise. (Oxford) 原因就在這兒-你們這么吵，我沒法工作。4. _. Ive got so much work I dont know where to start. A.What an awful! B. Its awful!C. That was awful! D. As is awful, 5. _with you

9、? _ Very well, thank you.B.What is going on B. How is it going C. How is everything going D. What is up五、指代不定式、動(dòng)名詞、從句等，用作形式主語(yǔ)或形式賓語(yǔ)。如：1._ always difficult to be in a foreign country, especially if you dont speak the language. A.That is always B. It is always C. It will be always D. That will always b

10、e2. We must make _ to the public that something should be done to stop pollution.A.What is clear B. it is clearC. It clear D. that clear3. I hate _ when people talk with their mouths full. A. it B. that C. these D. them4. _ one day they will have enough animals to set them free.A. It is hoped for B.

11、 what is hoped thatC. As is hoped that D. It is hoped that5. _ inside his heart was beating wildly with fear. A. It appeared calm but B. He appeared calm, but C. What appeared calm was D. It was appeared calm, but用用 it 作形式主語(yǔ)或形式賓語(yǔ)的句型主要有作形式主語(yǔ)或形式賓語(yǔ)的句型主要有:It + be + adj./ n. (for sb./of sb ) + to do sth.

12、 It + be + fun/ a waste of time/ no good/ no use doing sth. It be過(guò)去分詞that從句 It be形容詞 that從句 5、It be名詞（詞組）that從句1. Is it possible necessary to tell his father everything? 2. In fact it is a hard job for the police to keep order in an important football match.3. I dont think it possible to master a fo

13、reign language without much memory work.4. How silly of you it is to have done it!It + be + adj./ n. (for sb./of sb ) + to do sth. 注意：注意：該句型中的形容詞通常是表示事物的特點(diǎn)或該句型中的形容詞通常是表示事物的特點(diǎn)或特征的如特征的如difficult，hard，easy，impossible，necessary，important等，等，此時(shí)用此時(shí)用for；表示人的性格特征或特點(diǎn)的如表示人的性格特征或特點(diǎn)的如nice，good，bad，kind，silly，fo

14、olish，wise，clever， careless，rude，brave，cruel，careful， grateful等，這時(shí)要用等，這時(shí)要用 of。 It + be + fun/ a waste of time/ no good/ no use doing sth. 1. _ to jump into a river on a hot summer day!A.How fun it is B. What fun it isC. What fun of it is D. What a fun it is It is no use crying over spilt milk. 諺 牛奶已

15、潑，哭也無(wú)用。It be過(guò)去分詞過(guò)去分詞that從句從句 It is said, reported, announced, hoped, thought，told，believed，expected，decided，suggested, known + that 從句該句型通?？梢赞D(zhuǎn)換成sb/sth is said that 如：It is said that the book was translated into many languages in 1950.The book is said to have been translated into many languages in 19

16、50.It be形容詞形容詞 that從句從句 可用于此句型的形容詞還有可用于此句型的形容詞還有wonderful， true，good，right，wrong，important ，useless，surprising，clear，unusual，lucky，certain等。 如：1）It is quite certain that he will not make a speech at the meeting. 2）It is important that we (should) study hard. 5、It be名詞（詞組）名詞（詞組）that從句從句。適用該句型的名詞（詞組）還

17、有a pity，an honor，a good thing，a fact，a surprise，good news等。 如：1）It is a pity (that) you missed the sports meeting last week. 2）_ is a fact that English is being accepted as an international language. A. There B. This C. That D. It6、It seem appear happen的適當(dāng)形的適當(dāng)形式式that從句。該句型?？梢赞D(zhuǎn)換成含不定從句。該句型常可以轉(zhuǎn)換成含不定式的簡(jiǎn)

18、單句。式的簡(jiǎn)單句。如：1）It seems that there is a big waste pipe coming down from the town. (P. 31 SEFC Book 3A)There seems to be a big waste pipe coming down from the town.2）He appeared calm, but inside his heart was beating wildly with fear. (P.56 SEFC Book 3A)It appeared that he was calm, but inside his hear

19、t was beating wildly with fear.7、It doesnt matter（Its no wonder；It doesnt make too much difference等） when/ where/ which/ whether 等從句。 如：1）Does _ matter if he cant finish the job on time?A. this B. that C. he D. it2）They are all classmates_ is no wonder _ they should help each other with their studie

20、sAThis；whether BIt；if CThat；that DIt；that 8、S. + v. it + adj. / n./ + 不定式或從句。常用于這一句型的動(dòng)詞有 find, consider, feel, make, think 等。如：1）he found it important to study the situation in Russia.2）I want to make it clear whether she is still at school. 3）I feel it our duty to study English well. 4）I dont think

21、 _ possible to master a foreign language without much memory work. (NMET 90)A. this B. that C. its D. it1. Was it Bill, _ plays football well, _ helped the blind man cross the road.A.that/that B. who/that C. who/who C. that/who 六、六、it 用來(lái)引起強(qiáng)調(diào)句型用來(lái)引起強(qiáng)調(diào)句型 解析解析Who 引導(dǎo)一個(gè)非限定性定語(yǔ)從句修飾Bill; that 指代被強(qiáng)調(diào)部分Bill.2.

22、It was in the school, _ I once studied, _we held a party.正是在我曾經(jīng)就讀的那所學(xué)校我們舉行了一次聚會(huì).A.where/that B. in which/ that C. that/where D.that/in which解析解析where I once studied 非限定性定語(yǔ)從句修飾school。3. It was in the 1990s, _ great changes were taking place in china, _he made a lot of money.正是在中國(guó)發(fā)生著巨大變化的二十世紀(jì)九十年代,他掙了大

23、把的鈔票.A.that /when B. during which/thatC. when/that D. that/that解析解析強(qiáng)調(diào)部分in the 1990s 后跟了一個(gè)非限定性定語(yǔ)從句。4. -Where did you meet him? -It was in the park _ his wife and he first met.A. that B. where C. in which D. when這是個(gè)強(qiáng)調(diào)舉行的省略句，完整句子是：It was in the park where his wife and he first met that I met him. 解析解析4

24、. -Do you still remember _ you lost your wallet? -Yeah. It was at the crossing _ I got lost.A.where was it/ that B. where was it/thatC. The place where/where D. where it was that/where 第一個(gè)空是強(qiáng)調(diào)句型用作賓語(yǔ)從句；第二空where引導(dǎo)定語(yǔ)從句，后邊省略了that lost my wallet.解析解析5. It was five oclock in the afternoon _ they climbed u

25、p to the top of the mountain Asince Bwhen Cthat Duntil five oclock in the afternoon不能獨(dú)立作時(shí)間狀語(yǔ)，不能作為一個(gè)強(qiáng)調(diào)部分；at five oclock才可以構(gòu)成獨(dú)立的時(shí)間狀語(yǔ)。解析解析6. -Can it _ the manager that talked to your brother? -No. It _ someone else that spoke to your brother.A.be/must have been B. have been/ must have been C. have been

26、/must be D. be/ must be解析解析這是強(qiáng)調(diào)句型表示判斷的用法，對(duì)過(guò)去情況推測(cè)、判斷。1. _ in the regulations that you should not tell other people the password of your e-mail account. A. What is required B. What requiresC. It is required D. It requires (2005 上海)綜合練習(xí)解析解析It 在此作形式主語(yǔ)，實(shí)際賓語(yǔ)為that you should .2. Catherine bought a postcard

27、 of the place she was visiting, addressed _to _ and then posted it at the nearby post office. (2006 安徽) A. it; her B. it; herself C. herself; her D. herself; herself addressed it to herself, it 代指the postcard; 意思是“在明信片上寫上自己的地址寄給她自己。解析解析3. As the busiest woman in Norton, she made _ her duty to look a

28、fter all the other peoples affairs in that town. A. this B. that C. one D. it (2006 湖南)解析解析It 為形式賓語(yǔ)，指代不定式to look after all the other peoples affairs in that town.4. _ is our belief that improvements in health care will lead to a stronger, more prosperous economy. (2006 浙江)A. What B. That C. This D.

29、It解析解析It 形式主語(yǔ)指代that improvements in health care will lead to a stronger,5. Id appreciate _ if you would like to teach me how to use the computer. A. that B. it C. this D. you (2006 山東) 解析解析It 為形式賓語(yǔ)，指代if you would like to teach me how to use the computer.6. I dont like working late into the night， bu

30、t I cant help _. A. so B. that C. it D. them.解析解析I can help it. 為習(xí)慣用法，意思是“我實(shí)在控制不住”，“這不能怪我”。全句意思是“我不想熬夜，但我控制不住自己。 7. I prefer a flat in Inverness to _ in Perth, because I want to live near my Moms.A. one B. that C. it D. this (2005 天津) One不定代詞，指代a flat in Perth。全句的意思是：我更在 Inverness有一套有一套房子，而不是在Perth，

31、因?yàn)槲蚁胱≡谖覌寢尭浇?解析解析8. Weve been looking at houses but havent found _ we like yet.A. one B. ones C. it D. what 解析解析考查不定代詞的用法。one 指代 a house; what we like我們喜歡的東西，指房子。9. The doctor advised strongly that she should take a holiday, but _ didnt help.A. it B. she C. which D. heIt 指代前文中的事情。解析解析10. Cars do cau

32、se us some health problems in fact far more serious _ than mobile phones do. A. one B. ones C. it D. those 解析解析Ones 指的是前邊的problems, far more serious ones than mobile phones do 是前邊health problems 的同位語(yǔ), 對(duì)health problems 進(jìn)行補(bǔ)充說(shuō)明。11. I intended to compare notes with a friend, but unfortunately _ couldntspare me even one minute.A. they B. one C. who D. it 從句子結(jié)構(gòu)上，可排除選項(xiàng)C；從代詞的意義上可排除D；根據(jù)前半句的意思，句中的a friend指任意一個(gè)朋友，可理解為a friend 0f mine而后半句意指“我”這些朋友們，為復(fù)數(shù)。解析解析1