He couldn't answer this question just now.(改为同义句)He() () ()answer this question just now
问题描述：
He couldn't answer this question just now.(改为同义句)He() () ()answer this question just now
答
喂!家庭作业都拿出来百度, 你也太懒了吧?!
人家回答得很好, 不过, 你自己也加加油.
爸妈网儿童英语
答
wasn't able to
答
He was unable to answer this question just now
(was) (unable) (to)
couldn't——cannot的过去式，could not，意为能力所及之外，所以无法做成……事。
was unable to——unable为能力上不能做……事
was unable to=could not
答
He was unable to answer this question just now
绝对正确，请放心
愿你学习进步！
答
He (was) (unable) (to) answer this question just now.
刚才他无法回答这道问题.
couldn't——cannot的过去式,could not,意为能力所及之外,所以无法做成……事.
was unable to——unable为能力上不能做……事
was unable to=could not
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