句型11

　　It强调句型

　　强调句的基本构成：It is/was + 被强调的部分 + who(主要指人时)/that + 其余部分

　　[注意1]

　　这种结构可以强调句子的主语、宾语、状语(包括时间，地点，方式，原因等)，但是不能强调谓语动词(参考句型15)。

　　原句的谓语动词如果是现在或将来时态，用It is…that/who….;

　　原句的谓语动词如果是过去时态，用It was…that/who….;

　　强调时间、地点、原因或方式时不要用when, where或how, 必须用that。

　　[例句1]

　　I saw him in the street yesterday afternoon.

　　→It was I who saw him in the street yesterday afternoon.(强调主语)

　　→It was in the street that I saw him yesterday afternoon.(强调地点状语)

　　→It was yesterday afternoon that I saw him in the street.(强调时间状语)

　　→It was him that/who I saw in the street yesterday afternoon.(强调宾语)

　　[例句2]

　　He didn’t go to bed until his mother came back.

　　→It was not until his mother came back that he went to bed.

　　He didn’t do his homework until his father came back from work.

　　→It wasn’t until his father came back from work that he did his homework.

　　[例句3]

　　Only when you nearly lose someone do you fully realize how much you value him.

　　→It is only when you nearly lose someone that you fully realize how much you value him.

　　只有你快要失去某个人时，你才意识到你是多么尊重他。

　　[例句4]

　　I was late again because the traffic was very heavy during the rush hour.

　　→It was because the traffic was very heavy during the rush hour that I was late again.

　　(强调句中只能强调由because引导的原因状语从句，because不能换成since, as, for, now that等)

　　[注意2]强调句的疑问结构

　　一般疑问句 Is / Was it +被强调部分 +who / that …?

　　特殊疑问句 特殊疑问词+is /was +it +who / that…?

　　What is/was it that…? Who is/was it that…? When is/was it that…?

　　Where is/was it that…? Why is/was it that…? How is/was it that…?

　　[例句1]

　　I saw him in the street yesterday afternoon.

　　→When was it that you saw him in the street?

　　→Who was it that you saw in the street yesterday afternoon?

　　→Where was it that you saw him yesterday afternoon?

　　[例句2]

　　I don’t know when he will come back.

　　→I don’t know when it is that he will come back.(宾语从句疑问词后用陈述句语序)

　　–How was it that you got in touch with Mr. Smith? 你是怎么和Smith先生联系上的?

　　–Trough a friend of mine. 通过一个朋友。