强调句专题强调句型的基本结构是：It is/was + 被强调部分(主语、宾语、宾语补足语或状语等) + that/who +句子的其余部分。
一、连接词。
一般说来，如果被强调部分是人时，用连词that或who；被强调的部分是宾语，指人时也可以用whom；如果被强调部分是物，只能用连词that。
It was John and Mike who/that saw Mary in the street last night.It is Mary whom/ who he often helps .It was in the street that I met him yesterday.二、时态。
如果原句中谓语动词使用的是现在范畴的时态(一般现在时、现在进行时、现在完成/现在完成进行时、一般将来时、将来进行时、将来完成时等)，用It is...that...。
如果原句中谓语动词为过去范畴的时态(一般过去时、过去进行时、过去完成时、过去将来时等)，则用It was...that...。
如：Mary met an old beggar in the street yesterday.It was Mary who/that met an old beggar in the street yesterday. (强调主语)It was an old beggar whom/that Mary met in the street yesterday. (强调宾语)It was yesterday that Mary met an old beggar in the street. (强调时间状语)It was in the street that Mary met an old beggar yesterday. (强调地点状语)有时，be前可使用表示推测的情态动词。
如：It must be Peter who has let this secret out.一定是彼得将这个秘密泄露出去的。
It might be last night that they did their homework.他们也许是昨晚做完作业的。
三、强调含有not until的句子。
在强调not until句型时，not 位于until从句前，主句谓语动词作相应变化，即it is(was)+not until从句+that +其它。
It was not until he had finished the work that he went home.It was not until 12 o’clock last night that my brother came home.四、强调句的疑问句。
强调结构的疑问形式：强调一般疑问句中的某一成分时，要在主句中用一般疑问句的顺序。
例如：Was it you that/who broke the window ?Was it in the war that he lost his son ?强调特殊疑问句中的疑问词，其结构模式是：“疑问词+ is/was + it +that...”。
它同感叹句的强调模式极其相似，首先将疑问句开头的部分作为强调部分，套入强调结构，然后再将其变为疑问句。
例如：1. Where were you born? → Where was it that you were born?2. What did you want to see? → What was it that you wanted to see?3. How many people are being trained for the special work? → How many people is it that are being trained for the special work ?。
五、强调句型中的主谓一致。
被强调的成分为原句的主语时，that/who之后的谓语动词应与被强调的名词或代词在人称和数方面保持一致关系，从而选用恰当的动词形式。
例如：It is you who/that are wrong.It is I who/that am answering the question.但是如果被强调的部分是人称代词，按理应用人称代词主格形式，但在口语或非正式文体中也可以用其宾格形式，此时that/who的谓语动词要用单数第三人称形式is或was。
例如：It is me who is being asked the favor.另在It is/was..., not...that...句型中，其谓语动词应与肯定部分的词保持一致关系。
例如：It is my brother, not I that studies in that school.It is you, not your sister that are in charge of the company.六、感叹句的强调结构，既要体现强调句型的形式特征，又要体现感叹句的自然语序。
例如：1. How happy he looks! → How happy it is that he looks!2. What a clever boy he is! → What a clever boy it is tha t he is!七、强调句型的鉴别方法及相似句型的辨析强调句型极易与定语从句、名词性从句、状语从句等相关句型混淆，判断的方法是：强调句型中去掉It is/was…that剩下的部分在语法和意义上仍然是一个完整的句子。
如：It was yesterday that I met him. 去掉句中的It was …that 该句为：Yesterday I met him. 句意和语法都非常正确，说明这是一个强调句。
而其他句型则不行。
[典例展示]1. It is the ability to do the job________ matters not where you come from or what you are. （2000全国卷）A. oneB. thatC. whatD. it2. David said that it was because of his strong interest in literature _______ he chose the course.（2006上海春季）A. thatB. whatC. whyD. how3. It is these poisonous products _______ can cause the symptoms of the flu, such as headache and aching muscles. （2003上海卷）A .who B. that C .how D .what4. Why! I have nothing to confess. _______ you want me to say? （2004上海卷）A. What is it thatB. What it is thatC. How is it thatD. How it is that5. It was with great joy _______ he received the news that his lost daughter had been found. （2004 福建卷)A becauseB whichC sinceD that6. An awful accident _______, however, occur the other day. (2000上海卷)A. doesB. didC. has toD. had to7. It was not until she got home _______ Jennifer realized she had lost her keys.（2006全国II卷）A. whenB. thatC. whereD. before8. It was_______ black home after the experiment. (2004湖北卷)A. not until midnight did he goB. until midnight that he didn’t goC. not until midnight that he wentD. until midnight when he didn’t go9. —________that he managed to get the information?—Oh, a friend of his helped him. （2005山东卷）A. Where was itB. What was itC. How was itD. Why was it10.1) It was 20 years ago ________ the two friends met in Viet Nam.2) It will be 20 years ________ they meet in Viet Nam.3) It is 20 years ________ he came to live here.4) It was 20 years ________ he spent in writing this novel.5) It was not long ________ the people in Austria took up guns.6) It was midnight _______ he came back home.A. whenB. beforeC. sinceD. That练习一：1.—Who are making so much noise in the garden?A. It isB. They areC. That isD. There are2. It is _______ he often fails in exams ______ makes his parents worried about him.A. what; thatB. that; whatC. that; thatD. / ; that3. It is the protection for the trees _______ really matters, rather than how many trees are planted.A. whatB. thatC. 不填D. which4. It is _____ my father worked _____ I work now.A. where, thatB. where, whenC. that, whereD. that, that5. Was _____ that I saw last night at the concert?A. it youB. not youC. youD. that you6. It was ten o’clock _____ he came back home.A. whenB. thatC. sinceD. after7. It was not until he came back _____ he knew the police were looking for him.A. whichB. sinceC. thatD. before8.--Where was＿＿＿＿＿＿you picked up the wallet﹖- -Just near the school gate.A. itB. it thatC. the placeD. the place that9. I must find out why＿＿＿＿＿＿so many students made the same mistake.A. is it thatB. was it whichC. it is whatD. it was that10. How many years is it＿＿＿＿＿＿your sister came to work here﹖A. afterB. sinceC. beforeD. until11. Is it in the factory＿＿＿＿＿＿＿＿you visited last week＿＿＿＿＿＿＿＿this kind of car is made﹖A.／thatB. where whenC. where thatD.／when12.＿＿＿＿It's a long time＿＿＿＿＿＿＿I saw you last.- -Yes and what a pity since it will be a long time＿＿＿＿＿＿we see each other again.A. since beforeB. before sinceC. until afterD. after until13. It was because of bad weather＿＿＿＿＿＿the football match had to be put off.A. soB. so thatC. whyD. that14.It was his remarks＿＿＿＿＿left me wondering about his real purpose.A. whichB. whatC. whereD. that15. -- Was it in 1969＿＿＿＿＿＿the American astronaut succeeded＿＿＿＿＿＿landing on the moon﹖--- Quite right.A. when onB. that onC. when inD. that in16.It was not until 1920＿＿＿＿＿＿regular radio broadcasts began.NMET 95A. whileB. whichC. thatD. since17.＿＿＿＿＿＿is a fact that English is being accepted as an international language.NMET 95A. ThereB. ThisC. ThatD. It18.＿＿＿＿＿was in 1979＿＿＿＿＿I graduated from the university.NMET 98上海A. That thatB. It that C .That when D. It when19. It was for this reason＿＿＿＿＿＿her uncle moved out of New York and settled down in a small village.A. whichB. whyC. thatD. how20. It is the protection for the trees＿＿＿＿really matters rather than how many trees are planted.A. whatB. thatC.／D. which14.-- Was that the new comer who walked by﹖＿＿＿＿＿.A. It must be thatB. It must have beenC. He must beD. This must have been15. Our classroom is very clean.Do you nowho＿＿cleanedit﹖A. was it thatB. it was thatC. was it whoD.he was16. Now then children. It's high time you＿＿＿＿＿＿and dressed.A. washedB. should washC. were washedD. are washed17.＿＿＿＿＿the people have become the master of their own country＿＿＿＿＿＿＿science can really serve the people.A. It is only then；thatB. It was that；whenC. It is only when；thatD. It was when；then18. It was＿＿＿＿＿＿＿＿＿I met Mr. Green in Shanghai.A. ten years sinceB. many years ago thatC. five years untilD. Two months when练习二：1. ____ was Jane that I saw in the library this morning.A. ItB. HeC. SheD. That2.when was it you called me yesterday?A. untilB. thatC. thenD. so3. It was on October 1st ____ new China was founded.A. whichB. whenC. asD. that4. Was it because he was ill ____ he asked for leave?A. andB. thatC. that’sD. so5. It is imagination makes the world colorful, full of vigor and vitality. [2007 上海春]A．where B．what C．that D．when6. It _____ we had stayed together for a couple of weeks ____ I found we had a lot in common. [2007 浙江卷]A. was until; whenB. was until; thatC. wasn’t until; whenD. wasn’t until; that7. It is not who is right but what is right ______ is of importance. [2007 重庆卷]A. whichB. itC. thatD. this8.It was on 12 May,2008______the earthquake of Wenchuan county,Sichuan provimce happened.A.sinceB.whichC.thatD.when.9.It was Alice and her husband who saved the old man,_______?A.wasn’t itB.was itC.didn’t theyD.did they10.When asked to explain______made his lessons so exciting,the teache kept silent.A.what it is thatB.that what it isC.what is it thatD.that what is it11. Who was it ______ put so many large stones on the road?A. thisB. thatC. heD. she12. What a silly mistake it is ______ you’ve made!A. itB. thisC. thatD. which13. It was not until midnight ______ the noise of the street stopped.A. thatB. thisC. sinceD. at which14. Was ______ that I met at the railway station the other day?A. it youB. not youC. youD. that you15. It was when she was about to go to bed ______ the telephone rang.A. sinceB. asC. thatD. then16. It may have been at Christmas ______ John gave Mary a handbag.A. beforeB. whoC. thatD. when17. Why was ______ that the old woman was sent to prison?A. heB. itC. thatD. because18. It was his nervousness in the interview ______ probably lost him the job.A. whichB. sinceC. thatD. what19. It was the boy ______ had been in prison ______ stole the money.A. who, whereB. that, howC. who, thatD. that, which20. It might be I, who ______ caused the accident, who ______ to answer for it.A. has, isB. have, areC. has, amD. have, am21. It was _____ I reached there _____ I began to know something about the matter.A. until, whenB. until, thatC. not until, thatD. not when, that22. It was _____ my father worked _____ I work now.A. where, thatB. where, whenC. that, whereD. that, that23. It was not until he came back ______ he knew the police were looking for him.A. whichB. sinceC. thatD. before24. It’s more than half a century ______ the People’s Republic of China was liberated.A. whenB. thatC. sinceD. after25. It was not ______ you had explained how ______ I managed to do it.A. for, thatB. until, thatC. for, whenD. until, when[分析诊断]1. B。
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