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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 (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。 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。 ①I saw him in the street yesterday afternoon. 我昨天下午在街道上见到了他。 →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) ②He didn't go to bed until his mother came back. →It was not until his mother came back that he went to bed. 直到母亲回来，他才上床睡觉。 ③Only when you nearly lose someone do you fully realize how much you value him/her. →It is only when you nearly lose someone that you fully realize how much you value him/her. 只有你快要失去某个人时，你才意识到你是多么珍惜他/她。 ④I 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. 因为高峰期交通严重堵塞，我又迟到了。(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) (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...? ①I 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? ②I 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？ —Through a friend of mine. 通过我的一个朋友。
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