由 after,before,和 when 引导的状语从句在复合句中的位置比较灵活,放在句首或句末通常不会影响原句的意思：
After I called you,I put it back = I put it back after I called you.
Before I came,did anything happen?= Did anything happen before I came?
When I saw my friend,he was eating.= My friend was eating when I saw him.
你的第三句安排得很好啊,就应该这样说!
多读,多和英语近距离接触,时间长了你们就会成朋友.开始的时候你会借助词典和语法规则来认识英语,打交道多了不就认识了吗?不熟悉的单词或表达方式见多几次就熟悉了,是吧?熟悉了就不会再用词典和语法规则了.大多数学生不是“学不好”英文,而是坚持不下来.就像啃甘蔗一样,一节不甜两节不甜就扔了.其实,接着啃下去,甘蔗的甜味就出来啦!