能否说：He can't be able to win the race if he doesn't run fast enough.是否要将can't改成won't?
问题描述：
能否说：He can't be able to win the race if he doesn't run fast enough.是否要将can't改成won't?
答
不能.这同句子：I returned back home yesterday.犯得一个错误,即意思重复.