old people must____.A.be spoken to politely B.be spoken politely选哪个,为什么

问题描述:

old people must____.A.be spoken to politely B.be spoken politely
选哪个,为什么

A

a
因为这句话的主动形式是,you must speak to old people politely.
Speak 是不及物的,当然speak english的时候除外
换成被动形式,就是题目那样了~

a,因为在这里speak是“和某人说话的意思”,属于不及物动词,和...说话用speak to sb
这句话意思是,和老人说话时一定要有礼貌,Speak to old people,用的被动语态,介词不能省略.就变成这样了