If you can’t see the words written on the blackboard very well,maybe you need ___.B.to have your eyes examined D to be examined your eyes不是用need to be done吗?

问题描述:

If you can’t see the words written on the blackboard very well,maybe you need ___.
B.to have your eyes examined D to be examined your eyes
不是用need to be done吗?

答案是 B. to have your eyes examined
have sth done 句型 过去分词作宾补 使某事被做
选项D to be examined your eyes因为逻辑主语是人 应该用主动形式 to examine your eyes.
不是用need to be done除非主语 是 物 ,是被动关系 才可以 用
如 your eyes need to be examined

答案选b,have sth done是固定用法,让某事被做的意思,而D选项里面,因为主语是you,所以不能直接用examine的被动语态,如果主语是your eyes,那就可以用need to be eamined.