1.I found a dog ____ over by a car the road.

题目

1.I found a dog ____ over by a car the road.
A.to run B.run C.ran D.running
为什么选B?选D不行吗?
2._____ carefully,this letter is very beautiful.
A.Type B.Typing C.Typed D.To Type
为什么要选C?命令语气不应该用原型吗?
3.The vacation ____ over ,the students came back to school.
A.is B.are C.was D.being
这道题选D,选C不可以吗?
4.______,we left off our work.
A.After setting the sun B.Having set the sun C.The sun having set D.Being the sun set
为什么?选B不可以吗?

答案

1、这里意思是“我看到狗被一辆车撞了”,应该用被动句,首先排除AD,run/的被动式是run,所以选B
2、此处是说这信被处理得很仔细,很漂亮,应用被动态,并非命令
3、the vacation being over是从句,如果用was的话,则应该改成The vacation was over and the students came back to school.
4、如果选B的话,动名词作主语,照理说两个分句的主语应一致,但此处是不可能的,选C的话是从句