1、IT 句型大掃描楊柳青一中 徐勇第1頁(yè)，共29頁(yè)。1. It is (was) + 被強(qiáng)調(diào)部分 + that (用于強(qiáng)調(diào)除謂語(yǔ)動(dòng)詞以外的其它成分).= It was I who met him in the street yesterday.I met him in the street yesterday.= It was him that (whom) I met in the street yesterday.= It was in the street that I met him yesterday.= It was yesterday that I met him in the s

2、treet. 第2頁(yè)，共29頁(yè)。2. It is (was) not until that (notuntil句型的強(qiáng)調(diào))I didnt realize she was a famous film star until she took off her dark glasses.=It was not until she took off her dark glasses that I realized she was a famous film star.=Not until she took off her dark glasses did I realize she was a famo

3、us film star.第3頁(yè)，共29頁(yè)。3. It is clear ( obvious, true, possible, certain.) that . ( It 為形式主語(yǔ), 真正的主語(yǔ)是由 that 引出的主語(yǔ)從句)例It was obvious that she did not know much English.例It is very clear that hes round and tall like a tree. That she did not know much English is obvious.=That hes round and tall like a tr

4、ee is very clear.第4頁(yè)，共29頁(yè)。4. It is important ( necessary, right, strange, natural.) that （形式主語(yǔ)句型，但主語(yǔ)從句中需用虛擬語(yǔ)氣，should + 動(dòng)詞原形，并且should可以省略）例It is important that we (should) learn English well.例It is necessary that he (should) remember these words. 第5頁(yè)，共29頁(yè)。5. It is said (reported, learned.) that （It為形

5、式主語(yǔ)，真正主語(yǔ)為由that引出的主語(yǔ)從句）例It is reported that another earth satellite has been put into orbit.例It is said that he has come to Beijing. = Another earth satellite is reported to have been put into orbit.=He is said to have come to Beijing.第6頁(yè)，共29頁(yè)。6. It is suggested ( ordered . ) that (形式主語(yǔ)句型，從句中使用should

6、 + 動(dòng)詞原形，其中should可以省略）例It is suggested that the meeting( should ) be put off. 例It was ordered that we ( should ) arrive there in two hours. 第7頁(yè)，共29頁(yè)。7. It is a pity ( a shame . ) that It為形式主語(yǔ)。如果表示“竟然”等意想不到之義，從句需用 should + 動(dòng)詞原形的形式，其中should 可以省略。例：It is a pity that he is ill.例：It is a pity that such a

7、thing ( should ) happen in your class.第8頁(yè)，共29頁(yè)。8. It is time ( about time ,high time ) that 早就到了該做某事的時(shí)間了。（用過去時(shí)態(tài)表示虛擬）例：It is time that the children went to bed. 例：It is high time that we realized the importance of environmental protection.第9頁(yè)，共29頁(yè)。9. It is the first ( second . ) time that 從句中需用完成時(shí)態(tài)(注

8、意前后時(shí)態(tài)搭配)例：It is the first time (that) I have been here.例：It was the fourth time (that) I had been to New York.例：This is the third time (that) she has been late for school this week.第10頁(yè)，共29頁(yè)。10. It is . since 自從已經(jīng)有多長(zhǎng)時(shí)間了(注意前后時(shí)態(tài)的對(duì)比)）since + 非延續(xù)性動(dòng)詞）since + 延續(xù)性動(dòng)詞例：It is ( has been ) 5 years since his fa

9、ther died.（非延續(xù)性動(dòng)詞） 例：It was at least ten years since I had had a good drink.（非延續(xù)性動(dòng)詞）例：It is two years since he smoked. (延續(xù)性動(dòng)詞）live, study, work第11頁(yè)，共29頁(yè)。11. It is . when . 該句型中的 when 引導(dǎo)的是一個(gè)時(shí)間狀語(yǔ)從句，主句中的 it 指時(shí)間，表語(yǔ)由具體的時(shí)間充當(dāng)。常譯為當(dāng)?shù)臅r(shí)候，是。 例1: It was 5 oclock when he came here. 例2: It was nine oclock last lig

10、ht when he called.(注意與強(qiáng)調(diào)式句型的區(qū)別: 當(dāng)去掉It is(was)that后,句子仍然成立時(shí),該句應(yīng)用強(qiáng)調(diào)句型, 否則,應(yīng)用定語(yǔ)從句句型)例: It was at nine oclock last night that he called.第12頁(yè)，共29頁(yè)。12. It be . before . 該句型主句中的 it 指時(shí)間, 主句中的時(shí)態(tài)常是將來一般時(shí)或過去時(shí)兩種時(shí)態(tài)主句中的表語(yǔ)多是long, not long , 3 days , 2 weeks 等表示時(shí)間段的詞或短語(yǔ)。常譯為之后。例1:It was 3 days before he went to Beiji

11、ng.例2:It will not be long before he finishes his job.例3: It had been 3 days before he realized that he had made a serious mistake.第13頁(yè)，共29頁(yè)。13. It happens (seems, looks, appears,occurs ) that. 該句型中it是形式主語(yǔ)，that 引導(dǎo)的是主語(yǔ)從句，主句中的 happen , seem 等詞是不及物動(dòng)詞例1: It happened ( so happened ) that he met his teache

12、r in the street last Sunday afternoon.例2: It seems that he will be back in a few days.例3: It suddenly occurred to me that Mr. Zhang might have been there already.= He happened to meet his teacher in the street last Sunday afternoon.第14頁(yè)，共29頁(yè)。14. It takes sb. . to do sth. 該句型中的不定式是真正的主語(yǔ)，it是形式主語(yǔ)，句型中的直

13、接賓語(yǔ)是時(shí)間。常譯為做要花費(fèi)某人。 例1:It took thousands of people many years to build the Great Wall. 例2: Usually it takes me about two hours to finish my homework every day.第15頁(yè)，共29頁(yè)。15. It is no good (use ) doing sth. 該句型中的真正主語(yǔ)是動(dòng)名詞短語(yǔ)，主句中的表語(yǔ)可以是no good , ( not any good ) , no use , ( not any use )。 例1: It is no good

14、 learning English without speaking English. 例2: It is no use crying over spilt milk.第16頁(yè)，共29頁(yè)。16. It doesnt matter whether ( if ) . 該句型中whether(if) 引導(dǎo)的從句是真正主語(yǔ)，該句型常譯為 不論（是否）沒關(guān)系。 例1: It doesnt matter if they are old. 例2: It matters a great deal whether she will accept our invitation or not.例3: Does it

15、 matter whether what he said is true or not?第17頁(yè)，共29頁(yè)。17. It is kind ( of sb. ) to do sth.該句型中的不定式短語(yǔ)是真正主語(yǔ)，如果不定式的邏輯主語(yǔ)是由 of引起，主句中的形容詞必須是能表示邏輯主語(yǔ)特征的形容詞。常見的有： bad , brave , careless, clever , cruel , foolish , good （好心的）, honest , horrible , kind , lazy , modest , naughty , nice（有教養(yǎng)的）, polite, rude , sil

16、ly , stupid , wise , wrong（錯(cuò)誤的）等。 這個(gè)句型可以改寫為：sb. is kind to do sth. 例: It is kind of you to say so. = You are kind to say so. 第18頁(yè)，共29頁(yè)。18. It is necessary ( for sb. ) to do sth. 如果不定式的邏輯主語(yǔ)是由for引起，主句中的形容詞通常是表示重要性，緊迫性，頻繁程度，難易，安全等情況的形容詞。常見的形容詞有： important, necessary, natural easy , safe , common , norm

17、al , hard , difficult , dangerous , unusual, rare , impossible , pleasant等。 例1:It is important for her to come to the party. = It is important that she (should ) come to the party.例2: It is impossible for us to master a foreign language in such a short time.第19頁(yè)，共29頁(yè)。19. It looks ( seems ) as if . 該

18、句型中it無意義。 as if 引導(dǎo)一個(gè)狀語(yǔ)從句。常譯為，看起來好象如果與事實(shí)不相符合，則用虛擬語(yǔ)氣例1:It looks as if he is ill.（真的病了） 例2: It looks as if he were ill. （沒有生?。├?: It seemed as if he were dying.第20頁(yè)，共29頁(yè)。20. We think it important to learn a foreign language. 該句型中的it 作形式賓語(yǔ)。 為了記憶方便我們可稱該句型為6123結(jié)構(gòu)。 6-指主句中常用的動(dòng)詞：think, believe, make, find, c

19、onsider, feel； 1-指的是形式賓語(yǔ)it； 2-指的是賓補(bǔ)的兩種形式：形容詞或名詞； 3-指的是真正賓語(yǔ)的三種形式：不定式短語(yǔ)， 動(dòng)名詞短語(yǔ)或that引導(dǎo)的賓語(yǔ)從句。第21頁(yè)，共29頁(yè)。 例1:We think it our duty to clean our classroom every day. 例2: He felt it important learning English well. 例3: They found it difficult that they would finish their work in two days.第22頁(yè)，共29頁(yè)。對(duì)動(dòng)詞的強(qiáng)調(diào)1. 對(duì)

20、一般現(xiàn)在時(shí)態(tài)的強(qiáng)調(diào)(do, does)He knows all about it.= He does know all about it.We have some books on geography.= We do have some books on geography.2.對(duì)一般過去時(shí)態(tài)的強(qiáng)調(diào)(did)They went to the theater last night.= They did go to the theater last night.IT 慣用短語(yǔ)Make it Hate itGet it Forget it1. I am afraid I cant make it t

21、o the end.2. I hate it when people talk with their mouths full of food.3. - Do you mean that there is only one book left? - You get it.4. - I am sorry for breaking your coffee cup. - Forget it. I have another one.第23頁(yè)，共29頁(yè)。1. Was it during the Second World War _ he died?A. that B. while C. in which

22、D. then 2. Is _ necessary to take off our shoes when we enter the lab? A. everyone B. this C. her D. it3. Is _ possible to fly to the moon in a spaceship?now B. that C. it D. man 4. Is _ necessary to complete the design before National Day? A. this B. that C. it D. he5. I dont think _ possible to ma

23、ster a foreign language without much memory work.A. this B. that C. its D. itIT 用法練習(xí)第24頁(yè)，共29頁(yè)。1. Does _ matter if he cant finish the job on time?A. this B. that C. he D. it2. Toms mother kept telling him that he should work harder, but _ didnt help.he B. which C. she D. it3. _ is a fact that English

24、 is being accepted as an international language.A. There B. This C. That D. It4. It was about 600 years ago _ the first clock with a face and an hour hand was made.that B. until C. before D. when5. I hate _ when people talk with their mouths full.A. it B. that C. these D. them第25頁(yè)，共29頁(yè)。1. It was onl

25、y when I reread his poems recently _ I began to appreciate their beauty.until B. that C. then D. so2. It is the ability to do the job _ matters not where you come from or what you are.one B. that C. what D. it3. The Parkers bought a new house but _ will need a lot of work before they can move in.they B. it C. one D. which4. It was not _ she took off her glasses _ I realized she was a famous film star.A. when; that B. until; that C. until; when D. when; then第26頁(yè)，共29頁(yè)。 1. It