结构为：Is/Was it＋被强调部分＋that/who＋其他成分？

　　Was it in Beijing that we got to know each other?

　　我们是在北京认识的吗？

　　3．强调句的特殊疑问句

　　结构为：特殊疑问词＋is/was＋it＋that＋其他成分？

　　When was it that he left here?

　　他是什么时候离开这儿的？

　　4．强调句型还可以用"It might be...that..."和"It must have been...that..."表示推测。

　　It might be in the restaurant that you left your wallet.

　　你可能把钱包忘在了那个餐馆。

　　5．not...until...句型的强调句

　　结构为：It is/was not until＋被强调部分＋that＋其他部分。

　　He didn't go to bed until his wife came back.

　　他直到他妻子回来才睡觉。

　　强调句：It was not until his wife came back that he went to bed.

　　6．谓语动词的强调

　　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。

　　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！

　　7．几组易混句型比较：

　　(1)强调句与"It is/was＋时间＋when"从句：在后一种句型中it代指时间，when引导的是时间状语从句。注意两种句型中"时间"表达方式的不同。

　　It was at 8 o'clock that we got home.(强调句)

It was already 8 o'clock when we got home.(时间状语从句)