强调句型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thatIt 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 一般疑问句式:Is/Wasit+被强调部分+that/who+句子的其余部分? Was it you that/who broke the window? Was it in the war that he lost his son?特殊疑问句式:特殊疑问词+is/wasit+被强调部分+that/who+句子的其余部分?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____ wrong.It is I who/that ____answering the question.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 that 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1. It is the ability to do the job________ matters not where you come from or what you are. （2000全国卷）A. one B. that C. what D. it 2. David said that it was because of his strong interest in literature _______ he chose the course.（2006上海春季）A. that B. what C. why D. 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 that B. What it is that? C. How is it that D. 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 because B which C since D that6. An awful accident _______, however, occur the other day. (2000上海卷) A. does B. did C. has to D. had to 7. It was not until she got home _______ Jennifer realized she had lost her keys.（2006全国II卷）A. when B. that C. where D. before 8. It was_______ black home after the experiment. (2004湖北卷)A. not until midnight did he go B. until midnight that he didn’t goC. not until midnight that he went D. 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 it B. What was it C. How was it D. 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. when B. before C. since D. that 宾语从句宾语从句是高考的一个热点，也是一个难点，近几年虽说出现的次数不多，但是不能掉以轻心。
一、 宾语从句可分为三类：1. 由连接词that引导的宾语从句由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省例如：He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好 2. 用who, whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序例如：I want to know what he has told you. 我想知道他告诉了你什么 She always thinks of how she can work well. 她总是在想怎样能把工作做好。
She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持 3. 用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序例如：I doubt whether our team can win the match. 我怀。