我想知道look \ look at \ look like\ like 的区别和详细的用法

look 看
look at 看...地方 例:look at the blackboard 看黑板
look like 看起来像 He looks like his father.他看起来像他的父亲
like的用法：
be + like 像；相似 It is like a bird.
like 表示喜欢的时候：
like to do
like doing