can后面何时加doing

回答

文典教育

2022-06-24

can是情态动词,后面接v.只能接动词原形
通常情况下,can后是接动词原形.但是我碰过can 后接不定式的,给你造个句吧:I will do everything I can to help him pick up.

扩展资料

　　When can I get my test results?

　　我什么时候可以拿到化验结果？

　　We can reduce the problem to two main issues.

　　我们可以将这个问题概括成两个要点。

　　The operation could prolong his life by two or three years.

　　这次手术可使他多活两三年。