1.(indicating alternatives or doubt)(表示选择或怀疑)是否, 是不是
The council is considering whether to approve of the use of firearms.政务委员会正在考虑是否要批准动用武器。
It's doubtful whether she'll attend the meeting.她未必会参加会议。
2.whether … or
(in all circumstances)不管…还是
This happens whether the children are in two-parent or one-parent families.不管孩子是生活在双亲还是单亲家庭, 这种情况都会发生。
3.whether … or …
(either)不论是…还是…
Any man, whether liberal or conservative, would agree with me.任何人, 不论是自由派还是保守派, 都会同意我的看法。
beers and lagers of all kinds, whether bottled or draught各种各样的啤酒和淡啤酒, 不管是瓶装的还是散装的