as 和 though 引导的让步状语从句

　　as，though 引导的让步状语从句可以倒装。其中 as 必须将表语或状语提前引起倒装。

　　Though 可以倒装，也可以不倒装。

　　例如：Child as /though he was, he knew what was the right thing to do. 虽然是个小孩，该做什么不做什么，他全知道。

　　牛刀小试

　　1. Make sure you save all your work on screen ______ the computer breaks down.

　　A. in case

　　B. as if

　　C. so that

　　D. even though

　　2. ______ the Internet is of great help, I don’t think it’s a good idea to spend too much time

　　on it.

　　A. If

　　B. While

　　C. Because

　　D. As

　　3. Convenient ______ plastic bags are for people, they will cause white pollution.

　　A. as

　　B. although

　　C. since

　　D. while

　　4. She was a stubborn girl. ______, I couldn’t persuade her to change her mind.

　　A. Might as I try

　　B. Try might as I

　　C. Might I as try

　　D. Try as I might