look at .look out.look in.look to有什么区别

look in 看望,成功的机会
look over 检查
look about 四处观看
look after 照看,照顾
look ahead 计划未来
look around 随便看看
look at 看,考虑
look away 把脸转过去
look back 回顾过去
look black 怒目而视
look blue 神情沮丧
look down 看不起
look like 看．．像
look on 旁观
look out 当心
look out of 向外看