强调句
(一)强调句句型
1、陈述句的强调句型：It is/ was + 被强调部分(通常是主语、宾语或状语)+ that/ who(当强调主语且主语指人)+ 其它部分。
e.g. It is in the year of 1949 that People’s Republic of China was founded.
2、一般疑问句的强调句型：同上，只是把is/ was提到it前面。
e.g. Is it in the year of 1949 that People’s Republic of China was founded.?
3、特殊疑问句的强调句型：被强调部分(通常是疑问代词或疑问副词)+ is/ was + it + that/ who + 其它部分？
e.g. When and where was it that you found the book?
4、强调句例句：针对I met Li Ming at the railway station yesterday.句子进行强调。
强调主语：It was I that (who) met Li Ming at the railway station yesterday.
强调宾语：It was Li Ming that I met at the railway station yesterday.
强调地点状语：It was at the railway station that I met Li Ming yesterday.
强调时间状语：It was yesterday that I met Li Ming at the railway station.
5、注意：构成强调句的it本身没有词义；强调句中的连接词一般只用that, who，即使在强调时间状语和地点状语时也如此，that, who不可省略；强调句中的时态只用两种，一般现在时和一般过去时。原句谓语动词是一般过去时、过去完成时和过去进行时，用It was … ，其余的时态用It is … 。
(二)not … until … 句型的强调句
1、句型为：It is/ was not until + 被强调部分 + that + 其它部分
e.g. 普通句：He didn’t go to bed until/ till he finished his homework.
强调句：It was not until he finished his homework that he went to bed.
2、注意：此句型只用until，不用till。但如果不是强调句型，till, until可通用；因为句型中It is/ was not … 已经是否定句了，that后面的从句要用肯定句，切勿再用否定句了。
(三)谓语动词的强调
1、It is/ was … that … 结构不能强调谓语，如果需要强调谓语时，用助动词do/ does或did。
e.g. Do hand in your homework today. 务必今天交作业。
He did call you yesterday. 昨天他确实给你打电话了。
Do be careful when you cross the street. 过马路时，务必(千万)要小心啊！
2、注意：此种强调只用do/ does和did ，没有别的形式；过去时用did ，后面的谓语动词用原形。
练习题
1. It _____ Mike and Mary who helped the old man several days ago .
A. was B. are C. were D. had been
2. It was not until 1920 _____ regular radio broadcasts began.
A. which B. when C. that D. since
3. She said she would go and she ________ go.
A. didn't B. did C. really D. would
4. It was the training _____ he had as a young man _____ made him such a good engineer.
A. what; that B. that; what C. that; which D. which; that
5. --- Were all three people in the car injured in the accident?
--- No, ______ only the two passengers who got hurt.
A. there were B. it were C. there was D. it was
6. ____ was Jane that I saw in the library this morning.
A. ItB. HeC. SheD. That
7. It was through Xiao Li ____ I got to know Xiao Wang.
A. whoB. whomC. howD. that
8. It was in the rice fields ____ we had our league meeting.
A. where B. thatC. in whichD. on which
9. It was on October 1st ____ new China was founded.
A. whichB. whenC. asD. that
10. Was it because he was ill ____ he asked for leave?
A. andB. thatC. that’s D. so
11. It was ____ I met Mr. Green in Shanghai.
A. many years that B. many years before
C. many years ago that D. many years when
12. ____ is not everybody ____ can draw so well.
A. It, allB. It, that C. There, whoD. There, that
13. It was he saved enough money that he to go to university.
A. until, did not choose B. not until, chose
C. until, chose D. not until, did not choose
答案：
I. A 2.C 3.B 4.D 5.D 6.A 7.D 8.B 9.D 10.B 11.C 12.B 13.B
