This is the hotel where ( =in which / at which) they were staying. 这就是他们当时住的旅店。

Question

This is the hotel where ( =in which / at which) they were staying. 这就是他们当时住的旅店。
这句话为什么能换成in which / at which？

Answer 1

where ( =in which / at which) they were staying是定语从句，如果把它还原成独立的句子，就是：

They were staying in/at the hotel.
in/at the hotel是地点，所以在定语从句中可以用where引导。如果在从句中保留介词in/at，那么就用which指代the hotel，就变成in/at which了。

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Answer 2

This is the best hotel（that） I know． 这是我所知道的最好的饭店。they were staying他们当时住的旅店why可代替for which： The reason why he

Answer 3

在定语从句中的语法规则

Answer 4

定语从句中where是关系副词=介词+which ,stay at /in the hotel ,所以在这where=at/in which

Answer 5

因为stay in/ stay at的介词in/ at前置