can 后面动词要保持原形?

问题描述:

can 后面动词要保持原形?
例如The only person he could counted on was his friend,Bob.
count要否变?

我认为是不对,can后面必须要用动词原形,因为can是助动词,助动词后面是必须要用动词原形的,改为
The only person he could count on was his friend,Bob.
希望可以帮到楼主!