状语从句

题目

状语从句
____ the poem a second time,the meaning will become clearer to you.
A.Your having read B.While reading
C.If reading D.When you read
_____ your composition carefully ,some spelling mistakes can be avioded.
A.Having checked B.Checked C.If you check D.To check

答案

B应该是while you read
C应该是if you read
选D,因为这里是时间状语从句
相当于the meaning will become clearer to you when you read the poem a second time
同理补充的选c,是条件状语从句