英语语法之强调句及练习题
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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)+ 其他部分。
e.g. It was yesterday that he met Li Ping.
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. Was it yesterday that he met Li Ping?
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 + 其他部分?
e.g. When and where was it that you were born?
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，tha t， 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 + 其他部分
e.g. 普通句：He didn't go to bed until/ till his wife came back.
强调句：It was not until his wife came back 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 sit down. 务必请坐。
He did write to you last week. 上周他确实给你写了信。
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。
1. My bike is missing. I can't find ____ anywhere.
A. one
B. ones
C. it
D. that
2. —— Who's that?
____ Professor Li.
A. That's
B. It's
C. He's
D. This's
3. ____ was Jane that I saw in the library this morning.
A. It
B. He
C. She
D. That
4. —— Have you ever seen a whale alive?
Yes, I've seen ____.
A. that
B. it
C. such
D. one
5. The color of my coat is different from ____ of yours.
A. this
B. that
C. it
D. one
6. ____ will do you good to do some exercise every morning.
A. It
B. There
C. Those
D. You
7. We think ____ our duty to pay taxes to our government.
A. that
B. this
C. its
D. it
8. The climate of Shanghai is better than ____ of Nanjing.
A. that
B. it
C. which
D. what
9. ____ four years since I joined the Army.
A. There was
B. There is
C. It was
D. It is
10. How long ____ to finish the work?
A. you'll take
B. you'll take it
C. will it take you
D. will take you