在英语中存在着大量的习语idioms，这些习语往往不同于其字面意思。学会使用习语能够帮助我们的口语更加地道。从另一个角度来讲，我们在交流或者阅读的过程中，如果遇到习语，就能很容易理解对方或文章的意思。这期内容就和大家分享一些和疑问词有关的有趣的习语。
What
1. What’s what.
[ The facts of a situation. 事实、真相。 ]
Roc needs to know what’s what.
Roc需要知道真相。
2. What’s the magic word?
[ This idiom is usually said to the children who haven’t said "please" when asking for something. 该怎么说呀？（这句话是告诉孩子在要东西的时候得说请）]
A: Can I eat another cookie?
我能不能再吃一块饼干？
B: What’s the magic word?
该怎么说呀？
A: Please!
请。
Who
3. Who’s who.
[ The members or people in an organization. （某组织中）成员或人员的情况介绍。]
This list is a who’s who of the R&D center.
这个是研发中心人员的名单。
4. Who shall remain nameless.
[不便提某人的名字（尤其指坏事）]
The man, who shall remain nameless, broke the window this morning.
这个男人，这里就不说他名字了，今天早上打碎了窗户。
Where
5. Be where it’s at.
[表示某事物非常流行或时髦。]
Recently, TikTok is where it’s at.
最近，TikTok非常流行。
How
6. How come?
[为什么？]
A: You should say sorry to her.
你应该向她道歉。
B: How come?
为什么？
7. And how!
[我也是！]
A: I really enjoy reading this book.
我非常喜欢读这本书。
B: And how!
我也是！
When
8. When all is said and done.
[归根到底。]
When all is said and done, we’ve lost the chance to win.
归根到底，我们失去了胜利的机会。
9. Since when.
[从什么时候起（某些情况不同于以往了）]
Since when does the town become crowded and noisy?
从什么时候起这个小镇变得人山人海，又吵又闹了？
Why
Why keep a dog and bark yourself?
[用来问为什么花了钱雇佣别人还要自己动手？]
Which
10. Which is which
[哪个是哪个（对两个相似的人或物进行区分时）]
I can’t tell which is which when I drink the two different brands of wine.
我在喝这两个不同品牌的酒的时候我根本尝不出哪个是哪个。
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