英语常用的强调结构是"It is (was)+被强调部分(主语、宾语或状语)+who (that)...".
一般说来,被强调部分指人时,用who;指事物时用that,但that也可以指人.在
美国英语中指事物时常用which来代替that.
例句:
原句:My father did the experiment in the lab yesterday evening.
强调主语:It was my father who did the experiment in the lab yesterday evening.
强调宾语:It was the experiment that my father did in the lab yesterday evening.
强调时间:It was yesterday evening that my father did the experiment in the lab.(注意不用when)
强调地点:It was in the lab that my father did the experiment yesterday evening.