As the teacher approached the light switch, I noticed Edward slide his chair slightly farther away from mine. It didn't help.

当老师走过去把灯关掉的时候，我注意到爱德华稍稍把椅子向我挪开了一点。这没用。

Why? - I guess you used to slide your chair back.

为什么 -因为你一直都往后挪椅子。