think on,think about,think of,think over有什么区别?

1.think on 考虑,思量
think on one's feet思想敏捷
2.think about可接名词、动词-ing形式或由疑问词引导的不定式或宾语从句,表示“考虑„„”.
Please think about how to tell her bad news．请考虑一下,如何把这个不幸的消息告诉她.
3.think of意为“考虑到、想到”,后常接代词、名词或动词-ing形式；意为“认为”时,一般用于疑问句中,与what连用.
What do you think of play?（＝How do you find ／like ／enjoy the play?）你觉得这部戏剧怎么样?
4.think over意为“仔细考虑”,后接名词或代词作宾语.当后接代词时,应把代词放在over之前.如：
Let me think it over．让我好好想一想.