釋義：

know when (how，where) to 知道……

這次是疑問(wèn)詞+to+動(dòng)詞成為 know 的賓語(yǔ)的情況。用作 I don't know how ( what ) to... 或 Do you know how to... ?就可以了。

例句：

Leave it to me. I know how to handle it.
交給我吧，我知道怎么操作。
I don't know how to say it in English.
我不知道怎么用英語(yǔ)說(shuō)這個(gè)。
I don't know what else to do.
我不知道該怎么用別的方法做。
I don't know what to do.
我不知道該做什么。
I don't know what to get her for her birthday.
想不出她生日應(yīng)該給她買什么。
You shouldn't have. I don't know how to thank you.
你大可不必，我不知道該怎么謝你。
How stupid I am! I don't know what to say.
我真是笨！竟然不知道該說(shuō)些什么。
I don't know what to say. I really appreciate it.
真不知道該說(shuō)點(diǎn)什么，我很感激你。
Do you know how to use it?
你知道怎么使用嗎？
Where's Central Park? Do you know how to get there?
中央公園在哪兒？你知道怎么去那兒?jiǎn)幔?br />My computer broke. Do you know how to fix it?
我的電腦壞了，你知道怎么修理嗎？

對(duì)話：

A: We're playing cards. Want to join us?
我們?cè)诖蚺疲胍黄鹜鎲幔?br />B: Sure. I know how to play this game.
好的，我知道怎么玩。
A: Here's the present I got for your birthday.
這是我給你的生日禮物。
B: I don't know how to thank you.
真不知道該怎么答謝。
A: I don't know what to do.
我不知道該做什么。
B: You want my advice?
需要建議嗎？