Jack couldn't swim across the river.改同意句为Jack wasn't( )( )swim across the river.
问题描述：
Jack couldn't swim across the river.改同意句为Jack wasn't( )( )swim across the river.
答
为你解答。
Jack couldn't swim across the river.
同义句：Jack wasn't ( able) ( to) swim across the river.
杰克不会游过河去。
解释：can=be able to , 能够的意思。
答
Jack wasn't( able)(to )swim across the river.
答
填able to
Jack couldn't swim across the river=Jack wasn't【able to】swim across the river.
句子翻译是：杰克不能游过那条河
can=be able to（能,能够）
swim across the river：游过那条河