whether怎么用

1、I don't know whether he is coming to the party tonight. 我不知道他今晚是否来参加聚会。

2、He asked me whether I had finished my homework. 他问我是否完成了我的家庭作业。

3、The company is still trying to decide whether to go public. 公司仍在考虑是否上市。

4、We have to consider whether this is the best option for us. 我们必须考虑这是否是对我们最好的选择。