括号了里应填什么 We often see the boy ( )(play) football on the road.为什么是play 而不是plays

问题描述:

括号了里应填什么 We often see the boy ( )(play) football on the road.
为什么是play 而不是plays

play see sb do sth

play
因为see sb. do sth.是固定搭配.这时候不要加s滴