一道英语选择题“I can not see the blackboard very well ” “perhaps you need ——”

题目

一道英语选择题“I can not see the blackboard very well ” “perhaps you need ——”
A to examine your eyes
B to have examined your eyes
C having your eyes examined
D to have your eyes examined
答案是的D我觉得C也对
不是need doing需要被做吗

答案

正如你所说的 need doing 是需要被做,但是它的主语多是物【答案】D【解析】Perhaps you need to have your eyes examined 中 主语 是 you 你,所以用 need to do另外,后面有个词组时 have sth done 意思是：使某事被...