英語中強調(diào)句型就是采用it is +強調(diào)部分+that……強調(diào)部分可以為主語,賓語,表語,狀語……比如：對you are my friend.強調(diào)主語就是:it is you that are my friend.

It is (was) 被強調(diào)部分+that (who) + 句子其他部分。

原句： My father did the experiment in the lab yesterdayevening.

強調(diào)主語： Itwas my father who did the experiment in the lab yesterday evening.

強調(diào)時間： Itwas yesterday evening that my father did the experiment in the lab. (注意不用when)

強調(diào)地點： Itwas in the lab that my father did the experiment yesterday evening.

如果想強調(diào)謂語,那么一般用助動詞do或者他的對應(yīng)時態(tài)進行強調(diào).比如：your father asks you to do your homework.強調(diào)謂語ask.如下：your father does ask you to do your homework.