题目

You were silly not-----the door of your garage.
A.to lock
B.to have locked
C.locking
D.having locked
选哪个为什么

提问时间：2020-11-03

答案

B.to have locked 是正确的,动作未完成才蠢；A表将来动作,在此意思不符；而C 和D明显不对,此种句子无此用法.辨别：
I am glad to have won the game 我很高兴赢了比赛（动作完成）
I will be glad to win the game 赢得比赛我才高兴（将来动作）