The policeman noticed a boy running _____accross the road when a _英语解答

The policeman noticed a boy running _____accross the road when a car was coming toward him.
A.run B.to run C.running D.runs
答案给的是C,为什么不选A?
不是在feel,hear,notice.这些词后的补足语中,用动词原形么?

人气：284 ℃　时间：2020-01-04 14:15:00

解答

你只知道感官动词后面的宾补要用原形,却不知道如果当这个动作正在发生,就要用doing这个形式.如：I saw him dance in the classroom yesterday. （这里的yesterday不是一个具体的时间,所以dance用了原形.）I saw him ...