As a good manager, you should encourage great workers and bad workers. Good directs need encouraging to keep them working hard. Bad employees need encouragement to work harder. Here are some sentences for both types. 

作为一名优秀的管理者，你应该鼓励优秀的员工和不好的员工，好的指导需要鼓励，让他们努力工作，不好的员工需要鼓励更努力地工作，这里有两种类型的句子。

"Hey James, I think you're doing a great job and it is not going unnoticed." 

嘿，詹姆斯，我认为你做得很好，而且不会被忽视。

"You're doing great. Keep up the good work." 

你做的很好，继续保持良好的工作。

"I told my manager about your performance. He was quite impressed. Keep up the good work." 

我告诉经理你的表现，他很印象深刻，继续保持良好的工作。

Directs having difficulty  指导有困难 "I had a hard time on my first project too. Don't let it get you down. I'm sure you will do better next time." 

我在第一个项目上也遇到了困难，不要让这件事影响你的情绪，我相信你下次一定会做得更好。

"It wasn't as bad as you think. I also saw definite improvements so you shouldn't give up." 

这并不像你想的那么糟糕，我也看到了明显的改进，所以你不应该放弃。

"Your work has been pretty good, but I really think you can do better. You have potential and I hope you start trying a little harder." 

你的工作一直很好，但我真的认为你能做得更好，你有潜力的，我希望你开始尝试更努力一点。