①watch指看电视、比赛之类的

比如：We will watch a football match tonight.

②而see有看见的意思,也可以是看望

比如：I am going to see you soon!

③look也是看,但是其用意较浅,只是瞟一眼的感觉,没有see的程度深。

短语look at;look after

比如Please look at the blackboard

*look也可以作为系动词,和be等词,smell、sound、seem等词一样,后一般接表语

比如：Your dress looks so nice.

④notice:是注意到的意思,不仅看见了,还去留心,后面和see、watch的用法一样,接to do或doing,to do 表示去做某事,事情未做,doing表示做了某事,事情已做

比如：I noticed they were playing football on my way home.

*notice也有公告的意思,做名词