楼主是指强调句型吧?
1. 基本结构:
It is/was + 句子被强调部分 + who/whom/that + 句子其他未被强调部分。
如果句子被强调部分为人时,中间的引导词可以用who/whom,也可以用that.
强调句子任意成分(谓语动词除外),引导词都可以用that.
2. 最大特点:
去掉it is/was和引导词who/whom/that后,剩下部分能够构成一个完整的句子(有时候需要调整句序)。
如:I met him in the street yesterday.
如果强调主语I,则强调句型为:It was I who/that met him in the street yesterday.
如果强调宾语him,则强调句型为:It was him whom/that I met in the street yesterday.
如果强调地点状语in the street,则强调句型为:It was in the street that I met him yesterday.
如果强调时间状语yesterday,则强调句型为:It was yesterday that I met him in the street.
其他详细用法请楼主参考百度百科相关介绍:
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