1. what 引导名词性疑问分句

The question is what you want to do. 问题是你想干什么。

The question is what we should do next. 问题是我们下一步该做什么。

The question is what caused the accident. 问题在于什么原因造成这一事故。

What I’m really worried about is what will happen to me. 我真正关心的是什么样的事会发生在我身上。

2. what 引导名词性关系分句

This is what we did. 这是我们所做的。

That is what I’ve been told. 那就是我听说的事。

Quality is what counts most. 质量重要之极。

This is what I want to stress. 这是我想强调的。

This is what we have hoped for. 这就是我们一向所希望的。

I doubt if that was what he wanted. 不知道那是不是他想要的。

This may be what we need. 这可能是我们需要的东西。

This is what I think we should do. 我想这就是我们应该做的。

A hot bath is what I need. 我所需要的是洗一个热水澡。

Her smile was what first attracted me. 她的微笑首先迷住了我。