whether or not的用法總結初中

The question arises as to whether or not he knew of the situation.

問題是，他對局勢是否瞭解。

We're debating whether or not to go skiing this winter.

我們盤算着今年冬天是否去滑雪。

It remains to be seen whether or not this idea can be put into practice.

這一想法能否付諸實踐還有待於觀察。