用“what從句 + be + 被強調成分”或“被強調成分 + be + what從句”表示強調。

John wants a good rest. 約翰想要好好休息一下。

--What John wants is a good rest. 約翰想要的是好好休息一下。

或： A good rest is what John wants. 好好休息一下正是約翰想要的事。（比較少見）

I’d like you to work on Exercise Two on Page 38. 我要你們做38頁上的練習二。

-- What I’d like you to work on is Exercise Two on Page 38. 我要你們做的作業是38頁上的練習二。

I need two books. 我要兩本書。

-- What I need are two books. 我要的是兩本書。（注意謂語動詞的數）

注意：

在這種強調句型中，除了what外，人們很少使用其他連詞。

避免說：Where you should play football is the play ground, not the classroom.

最好說：The place where you should play football is the playground, not the classroom. 你們踢足球的地方是操場，而不是教室。

避免說：When I read English aloud is early morning.

最好說：The time I read English aloud is early morning. 我是在清晨朗讀英語。

避免說：Why she was absent from class was that she was feeling unwell.

最好說：The reason why she was absent from class was that she was feeling unwell. 她缺課的原因是她身體不好。