她不知有没有人收听。

She had no idea whether anybody was listening.

youdao

人往往会做出一些有违意愿的事情，往往事后会后悔，不知有没有人研究过人为什么会冲动，以及什么办法能克服它。

One often do something of not his willing. and he must be regret after this, I don't know why people will be angry, and what measures can defeat it.

youdao

我不知道皮特这星期有没有人可以照相。

I don't know whether Pete has anyone to take photographs this week.

youdao