急急急，一道英语题（高一）

Question

He is a man of few words,so he seldom speaks to others unless___
A.spoken to B.spoken C.speaking to D.speaking
老师说这是没学的知识点，但我还是想知道
感谢

Answer 1

这是条件状语从句中的省略现象。
he seldom speaks to others unless (he is)spoken to.追问

能再说具体些吗

追答

http://wenku.baidu.com/view/954948a2b0717fd5360cdcbe.html

Answer 2

A

Answer 3

A

Answer 4

选A