※ 引述《ksgter (kstr)》之銘言：
: 請教大家
: 1. I play basketball in the place where you broke your leg.
: Where引導形容詞子句
: 2. I play basketball where you broke your leg.
: Where引導副詞子句
: 3. I play basketball in where you broke your leg.
: Where引導名詞子句
: 想問一下這三句是對的嗎？因為自己想了很久還是不確定
1. I play basketball in the place where you broke your leg
文法正確，但意思有一點怪怪的
別人已經斷過腿但還特地提起我是常態性在那邊打球(現在普通式)
也許可以說:
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.
不確定文法是否正確，但我應該會改成:
I play basketball in that park where you broke your leg.
同樣也有文法正確但意思怪怪的問題，感覺在嘲諷別人
這樣的話就不會:
I play basketball in the same park where my sister goes jogging.
3.你的第三句 應該是不太正確
想瞭解更多相關用法我有找到一個英國文化協會的文法說明
你可以看這個連結的第三點 Times and places
https://learnenglish.britishcouncil.org/en/english-grammar/relative-clauses
試試看吧 ~ 加油