thisisaplace+hestayedat/atwhichhestayed/wherehestay+whenhewasachild请问怎么区分他们的正式程度啊?

Question

this is a place+ he stayed at /at which he stayed/where he stay+when he was a child
请问怎么区分他们的正式程度啊?

Answer 1

this is: 这是
a place: 一个地方
he stayed at when he was a child: 最直接的说法－他小时住在这地方
at which he stayed when he was a child: "at which" 用来指没生命的东西如地方,物件
where he stayed: "where" 用来缩小范围