Is/Was it + 被强调部分+that +句子的其余部分。例：Was it not until he finished his homework that he went to bed? （强调句的一般疑问句）

　　6.强调句的特殊疑问句形式。

　　+ is/was it + 被强调部分+ that + 句子的其余部分。例：When was it that he went to bed?（特殊疑问句形式）

　　7.含有强调句型的特殊疑问句作宾语从句时，注意使用陈述语序。例：I really don’t know when it was that he went to bed.

　　8.强调句中的被强调部分含有一个定语从句，要注意区别、分析。It is/was +被强调部分+定语从句+that(who)+句子的其余部分。例：It is in the city where he was born that he works.他工作的地方是他出生的那个城市。有时强调句根本没出现，所以不要从形式上推断是不是强调句。例：----I was once nearly drowned.

　　-----Oh, when was that? ----It was in 2003 when I was in middle school.这句根本就没出现强调部分，如果用强调句把它补充完整的话，应为：It was in 2003 when I was in middle school that I was nearly drowned.

　　五、相似句型的对比

　　1.强调句与定语从句的对比

　　[1] It was in this city ______ he was born.

　　[2] It was this city ______ he was born.

　　[3] It was in 1989 ______ he was born.

　　[4] It was 1989 _____ he was born.

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