Jack didn't know where he could find his mother变为简单句

问题描述:

Jack didn't know where he could find his mother变为简单句

应该是 Jack didn't find his mother anywhere。

Jack can't find (out) his mother
其实原句konw 和 where 之间省略了that 。这是一个定语从句~
^_^个人观点,仅供参考~

Jack didn't know where to find his mother.

where he could ----------where to