look in 与look at的区别,急

look in
1.往里看：例句:She was looking in a mirror.
她在照镜子.He looked in his briefcase and found that report.
他朝公文包里看了看,找到了那份报告.2.顺便拜访,顺便看望,顺道访问(常与 on 连用)：例句:She looked in on her friend on her way home.
她在回家的路上顺便看看朋友.3.[口语]看电视：例句:With so much work to do,I have no time to look in tonight.
今晚我有很多工作要做,没工夫看电视.
look at
1.看；朝…看；盯：例句:The children looked at their new teacher in curiosity.
孩子们好奇地望着新老师.His girlfriend is pretty to look at.
他的女朋友长得好看.2.看待；认为：例句:We should learn to look at problems all-sidedly.
我们应该学会全面看问题.3.考虑;着眼于;接受[常用于 will(或 would) not look at]:例句:The manager will not look at a report like that.
经理不会答理那样一份报告.4.检查；察看：例句:You should look at that house before you decide to buy it.
你应该看看那栋房子再决定购买.5.过目；浏览：例句:Have you looked at their report?
你看过他们的报告了吗?