situation case point一般情况下用where,有没有特殊情况

你说的情况在定语从句中常出现.situation ,case ,point作先行词时,关系词一般情况下用where.如：
I have reached a point in my life_where_I am supposed to make decisions of my own.
It's helpful to put children in a situation_where__they can see themselves differently.
其中有特殊情况的词是point,因为它既可以表示地点,又可以表示时间.如《牛津词典》上的例子：
We have reached the point 【时刻；关头；阶段】_when__we have no money left.
对比：
This is the point【某地方；地点】_at_which_the river divides.
再问： at which=where?
再答： where=介词+which；其中介词可根据句意表达和搭配，用合适的介词。如： This is the point【某地方；地点】_at_which=where_the river divides。 This is the farm _on which_they usually work.