You are great.
一般的用法：
You're great/errific.
你好棒/好厉害。
I admire you.
我佩服你。
You're really cool.
你真酷。
You're amazing.
你真了不起。
You're awesome.
你真了不起。
完成一项任务后的说法：
You did a great job.
你做得很好。
You really impress me.
你令我印象深刻。
You're an outstanding individual.
你真是杰出人材。
You are a great asset to our company.
你是本公司的重要资产（台柱）。