look back后面加什么介词

　　Look Back on the Professional Development Process of the Young Teacher

　　对一个青年地理教师专业成长的回眸

　　Above all, we should not look back on but look forward.

　　最重要的是要往前看而不是往后看。

　　They often look back on the days they spent together.

　　他们常回顾曾在一起度过的日子。

　　The past always seems better when you look back on it.

　　当你回顾过去时似乎总觉得过去比现在好。

　　She can look back on her career with great satisfaction.

　　她回顾自己的经历觉得心满意足。