What words or phrases might be useful in this tricky convers

（单词翻译）

All managers sometimes have to have difficult conversations with people working under them. What is the best way to give negative feedback?
很多经理有时候在与下属交流时有困难，给予负面反馈的最好方法是什么呢？
Imagine you are unhappy with the behaviour of a member of your team. You have decided¹ to raise the issue with this person and tell him or her that you would like to see an improvement. What words or phrases might be useful in this tricky² conversation?
假设你对你一个下属的行为不满意，你决定与他谈谈并告知他或她你希望看到什么样的提高。在这个令人头痛的交谈中你会用到什么样的词或短语呢？
tricky conversations

Useful Phrases
I’m not going to get into a discussion about… Clearly…What you need to do… But bearing in mind… I expect you to… It’s important that you… I’m not happy with the effort that you’ve made I really want to see some improvement You’ve got to snap out of it I know it’s difficult…
Transcript³
Sean:  Okay, well, I’m not going to get into a discussion about who deserved to get the 
job. Clearly, the person who was appointed was the right person for the job. 
What you need to do is look at your work and what you’re doing and where 
that’s taking you in your career. But bearing in mind that you are still employed 
to do a job and I expect you to do that job with a certain attitude. You’re meeting 
members of the public quite regularly - it’s important that you aren’t unhappy, 
or at least that you don’t show it. This meeting is really just to let you know I’m 
not happy with the effort that you’ve made... 
Michelle:  Okay … 
Sean:  … and I really want to see some improvement. I know it’s difficult. I know 
that it’s depressing not to get a job, but you’ve got to snap out of it（从。。。中迅速恢复过来）, you’ve got to 
get on with the job that you’re doing now.   (本文由在线英语听力室整理编辑)