B has really good work ethics.: as a new comer in xxxx, he has shown great curiosity and been eager to learn new things and tried to solve complex problems with cross functional teams.....(可以展开说点实列。着重描写你怎么 帮她的）
B is a good team player When he has questions, he has always been proacitve to reach out to colleagues who has more experience for opnition and advice. and once he has a good understanding of the situation and possible solution, he will take the project from initiation to completion (不懂你们的东西。你可以改一下）
Although B has some room to improve in XXX area, I do enjoy working with him as he is a quick learner and very collaborative colleague to be on the team.
自己wordsmith. room to improve是一种比较委婉的方式说明他那个方面不行。老美一听就明白。不需要多说。
