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used to express a doubt or choice between two possibilities （表示迟疑或两个可能性之间的选择）是否 He seemed undecided whether to go or stay. 他似乎还没有决定去留。 It remains to be seen whether or not this idea can be put into practice. 这一想法能否付诸实践还有待于观察。 I asked him whether he had done it all himself or whether someone had helped him. 我问过他这都是他自己做的还是有人帮他做的。 I'll see whether she's at home (= or not at home). 我来看看她在不在家。 It's doubtful whether there'll be any seats left. 看来未必还有座位。
Homophones weather | whetherweather whether- weather noun
Next day the weather turned cold. 第二天天气就变冷了。
- weather verb
Be prepared to weather a storm of criticism. 做好经受批评风暴的准备。
- whether conjunction
You'll have wonderful views whether you travel by sea or by air. 无论你是乘船还是乘飞机旅行，你都会看到美丽的风景。
Grammar Point if / whetherif / whetherTopics Preferences and decisionsb1- Both if and whether are used in reporting questions which expect ‘yes’ or ‘no’ as the answer:
if 和 whether 均用于要求以 yes 或 no 作答的转述疑问句中： 她问我要不要喝点什么。 我们不知道是写信好还是打电话好。
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used to show that something is true in either of two cases （表示两种情况都真实）是…（还是），或者…（或者），不管…（还是）
Word OriginOld English hwæther, hwether, of Germanic origin; related to German weder ‘neither’.