1. So what? 那又怎么样？
If I say I won't go with you, so what? 如果我说不跟你一起去，那又怎么样？
2. What about? 有关什么呢？
—Could I have a word with him?
—What about? He is busy now.
——我可以同他谈谈吗？
——谈什么呢？他正忙着呢。
3. What about...? 你认为……怎么样？
What about going out for a walk? 出去散散步怎么样？
4. What for? 为什么？
—Do you happen to have twenty dollars with you?
—What for?
—I want to buy a reference book.
——你身上有二十美元吗？
——干什么？
——我想买一本参考书。
5. What then? 下一步怎么办？
We've finished this task at last and what then? 我们终于完成了这项任务，下一步怎么办？
6. What else? 还有别的什么？
—He said he liked you very much.
—What else?
——他说他很喜欢你。
——他还说了别的什么？
7. What if...? 如果……怎么办？
What if he comes here to ask for you tomorrow? 如果他明天来这儿要求见你怎么办？
8. and what not 等等；诸如此类
You had better take with you your shirts, shoes, caps and what not. 你最好随身带上衬衫、鞋、帽子等诸如此类的物品。
9. what's more 加之；而且
He studies very hard, and what's more, he is ready to help others. 他学习勤奋、刻苦，而且还乐于助人。
10. what's worse 更糟糕的是
We were very tired at that time, and what's worse, it was raining heavily. 那时我们已经精疲力竭了，更糟的是，天还下着大雨。
11. what's what事情的真相；事情的来龙去脉
I beg you to tell me what's what. 我恳求你告诉我事情的真相。
12. what is called 所谓的
Mary is what is called a modern girl. 玛丽就是所谓的现代女孩。
13. What's up? 怎么啦？出了什么事了？
There are so many people standing there. What's up? 那么多人站在那里，出了什么事了？
14. I'll tell you what. 我告诉你一个好主意。
Don't be so worried. I'll tell you what. 不要如此着急。我告诉你一个好主意。