①This is the reason why she will not attend the meeting.
②The teacher had no idea why Jack was absent.
如何分析①是定语从句,②是同位语从句?
句1 why 是关系代词= for which或because of which, 所以应该是定语从句。
句2 why 是疑问副词。之前省略that, 所以是同位语从句。当然why 前也可以用of, 但这就不是从句了。
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