We would like to offer you a promotion to assistant manager.
我们想提拔你为经理助理。

offer sb sth
提供某人...
promotion
提升
I was given a promotion after one year's working in this company.
我在家公司工作一年后我就升职了。
assistant manager
经理助理

A:Linda,thanks for taking the time to talk to me today.
琳达，谢谢你今天抽时间跟我谈话。
B:Henry,what's up?
亨利，怎么了？
A:Well,I have been talking to the other managers and we are all very pleased with your work.We would like to offer you a promotion to assistant manager.This job comes with more hours,more responsibility,and of course,a pay raise.
恩，我跟其他经理谈过了，我们都非常满意你的工作。我们想提拔你为经理助理。这项工作将需要付出更多的时间，更多的责任感，当然了，薪水也会更多的。
B:Wow,that sounds great.How many hours would it require?I'm nervous that working too much will interfere with my studies.
哇，听起来太棒了。会需要多少时间？我担心工作时间太长会影响到我的学习。
A:That's a good point.You would like to work about 20 hours a week,but we can be flexible with the schedule so that you have time to go to class and study.
问得好。你需要每周工作20小时，但是我们的日常安排是灵活的，这样你就有时间去上课和学习了。
B:That sounds like something I could do.
听起来我应该可以胜任。