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
A to examine your eyes
B to have examined your eyes
C having your eyes examined
D to have your eyes examined
提问时间：2020-08-03
答案
选D首先need to do 需要做某事,用不定式.其次have sth done 请（某人）做某事.也就是说,have your eyes examined 让（医生）检查你的眼睛.但是是A中没有表达出这类意思,而B中have done sth 是完成时,意思为曾经做过...
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