※ 引述《ksgter (kstr)》之铭言：
: 请教大家
: 1. I play basketball in the place where you broke your leg.
: Where引导形容词子句
: 2. I play basketball where you broke your leg.
: Where引导副词子句
: 3. I play basketball in where you broke your leg.
: Where引导名词子句
: 想问一下这三句是对的吗？因为自己想了很久还是不确定
1. I play basketball in the place where you broke your leg
文法正确，但意思有一点怪怪的
别人已经断过腿但还特地提起我是常态性在那边打球(现在普通式)
也许可以说:
I still play basketball at that place where you broke your leg, but
now I pay extra attention. / , but now I'm being really careful.
I used to play basketball at that place where you broke your leg, but
I don't go there anymore. / , but I no longer do that.
2. I play basketball where you broke your leg.
不确定文法是否正确，但我应该会改成:
I play basketball in that park where you broke your leg.
同样也有文法正确但意思怪怪的问题，感觉在嘲讽别人
这样的话就不会:
I play basketball in the same park where my sister goes jogging.
3.你的第三句 应该是不太正确
想了解更多相关用法我有找到一个英国文化协会的文法说明
你可以看这个连结的第三点 Times and places
https://learnenglish.britishcouncil.org/en/english-grammar/relative-clauses
试试看吧 ~ 加油