Question

He can run quicklf变为否定句？

Answer 1

否定句：
He can't run quickly .
含情态动词can的句子变否定句，在can 后面加 not ， can not 缩写can't .

Answer 2

He can run quickly.
变为否定句：
He can’t run quickly.
他跑不快。

追答

He can run quickly.
变为否定句：
He can’t run quickly.
他跑不快。