Grammar Note
名词when通常用于固定搭配，如'the when and where'，意为'时间和地点'。
时间；时刻；时候
whens — plural of when
先理解核心含义，再看它在真实句子里的用法。
时间；时刻；时候
the time at which something happens
The when of the meeting is still undecided.
会议的时间还未确定。
某事发生的时间。
The time at which something happens.
Please confirm the when and the where of the event by email.
请通过电子邮件确认活动的时间和地点。
I can tell you the where, but I don't know the when.
我可以告诉你地点，但不知道时间。
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名词when通常用于固定搭配，如'the when and where'，意为'时间和地点'。
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Collins 词频等级为 5，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY.