非限制性定语从句,都是表时间,什么时候用which,什么时候用when?

非限制性定语从句,都是表时间,什么时候用which,什么时候用when?
都是表地点,什么时候用which,什么时候用where?
并给出 很相近 的例句.
我要的不是when=in which 而是什么情况用which和什么情况用when where

which引导非限制性定语从句的情况很多,经常修饰限定前面的句子.
比如：
1．Dick is going to join in the football game,which was agreed at the meeting．
2．My brother had been an engineer,which was what he wanted to be．
when,where引导非限制性定语从句时,作定语从句的状语.
when ＝and then,
where ＝and there.
1．He was quickly taken to hospital,where a doctor wanted to examine Mr King's legs．金先生很快被送去住院,在那里一个医生要检查他的腿.
2．We will put off the outing until next week,when we won't be so busy．我们把郊游推迟到下个星期,那时我们不会那么忙了.
3．He went to America in 1912,where and when he was noticed by an important film director．他在1912年去了美国,当时他在那里引起了一个重要电影导演的注意.
在介词 + where ／when 非限制性定语从句里,where ＝there,when ＝then.
4．His head soon appeared out of the second storey windows,from where he could see nothing but trees．他的头很快从第二层楼的一个窗户伸出来了,从那里他只能看见树木.
5．That was in 1929,since when things have been better．那是在1929年,从那时起情况就已经好转了.
6．I went to bed at ten,before when I was reading for an hour．我10点去睡觉,在那时以前我看了1小时的书.
有时候where ／when可以用prep．which替换.
7．The southern states wanted to set up a country of their own,where they would be free to keep black slaves．南方各州要建立一个属于他们自己的国家,在那里他们将自由地保留黑人奴隶.
8．I still remembered January 10,on which ／when he came to see me．我仍然记得1月10日,那一天他来看我了.
你的补充问题,上面已经说明了呀,
when,where引导非限制性定语从句时,作定语从句的状语.
因此你只要看到非限制性定语从句中强调的是时间或者地点,那就可以用when和where了啊