I have a letter____ but i'm too busy.------------Why not have your son_____it for you?
问题描述：
I have a letter____ but i'm too busy.------------Why not have your son_____it for you?
A.to post;post
B.posted;post
C.to post;to post
D.post;post 请说明一下为什么
答
选A.to post;post第一空是不定式作定语修饰letter.当不定式修饰的名词刚好是不定式动作的对象时,不定式必须用主动形式,故第一空不能选posted.第二空的考点为:have sb.do sth .意为" 让某人做某事" ,这是固定搭配,作...顺便问一下 have sth done 什么时候用,就是这个搞不清我才选的B当主语请别人做某事时就用have sth done ,如: Something is wrong with my car . I'll have it repaired tomorrow . (车出毛病了,明天要送去让别人修车,这时就只能用repaired,因为不是自己修车,但对车来说是被修.)