在非正式场合的口语中，特别是年轻人喜欢用这些话来搪塞他们的家长：

1Dunno

(“布吉岛”，不知道)

例：“When do you have to submit this essay?”

“Dunno. I can’t remember.”

如果你手头没有任何信息或者你猜不透问题的答案，就这么说：

2 I have no idea.

(我没头绪，我不清楚)

例：“What time does the film start?”

“I have no idea. Why don’t you call the cinema?”

有时候，我们难免遇到一些很烦人的问题或提问者，如果你对这些感到厌烦，就可以这样说话，显示你已经没耐心了：

3How should I know?

(我怎么可能知道?搞得好像我就应该知道一样。)

例：You ask me where your pen is, how should I know?

4Don’t ask me.

(别再问我了，我根本不知道)

例：“What time did she say she was catching her train?”

“Don’t ask me. I’m always the last to know.”

5Search me

(你怎么样都不可能在我身上找到答案，尽管问吧，我不知道)

例：“Why didn’t he ask you for the keys?” “Search me. I’m not a mind reader”

如果别人问你的问题太难了，你觉得根本就不可能会有人知道，就可以用这2种说法：

6Who knows?

(谁知道，天知道)

例：“Will they ever find the missing aircraft?” “Who knows? The search been going on for such a long time now.”

7 It’s anyone’s guess

(大家都在猜，所以没人知道)

例：How will the situation develop from here? It's anyone’s guess.

如果别人问你某件事，而你也恰好对这件事知之甚少，或许抱有同样的疑问，就可以说：

8Your guess is as good as mine.

(我和你一样不知道，简单说就是我也不知道)

例：“Do you think we will be able to book the restaurant for Friday?”

“Your guess is as good as mine.”

有时，问题的答案或许是所想的那样，但是你又没有足够的依据和信息来判断是否如此，就可以说：

9 Not as far as I know.

(这超出我的了解范围了，我不太清楚)

例：“Has Clive left the company? I haven’t seen him for ages.”

“Not as far as I know, but I haven’t seen him recently either.”

在非正式的场合，如果你想回答一个问题却回答不了，可以用这种常见的说法回答别人：

10It beats me.

(这真是难倒我了，我答不上来)

例：“Why did he do such a stupid thing?”

“It beats me”