nice going!/you did a good job/good job/well done.干得好！｛极其地道的表扬｝
the food is delicious好吃！｛最普通，但非常重要的表扬｝
everything tasts great每样东西都很美味
your son/daughter is so cute你的孩子很可爱｛外国人绝对爱听的表扬！｝
what an adorable baby多么可爱的孩子｛只管大胆用｝
I admire your work/I respect your work.我对你的工作表示敬意｛世界通用｝
you've got a great personality你的个性很好｛一个非常安全的表扬｝
you have a good sence of humor你真幽默｛美国人极其喜欢的表扬｝
your chinese is really surprising你的中文令人惊讶｛绝对和其他人不同的表扬｝
your english is incredible你真不敢相信你的英语｛用了六星级的形容词｝
you have a very successful business你的事业很成功｛现代人非常喜欢听｝
you're very professional你非常专业｛专业化的表扬｝
your company is very impressive你的公司给我留下深刻印象
you're so smart你非常聪明
I envy you very much我非常羡慕你
your wife is very charming你的妻子很有魅力
you two make a lovely couple你俩真是天生一对
you're really talented你很有天赋
you look nice in that color你穿那种颜色很好看
you have a good taste你很有品味
you look like a million dollars/you look outstanding/you look like a movie star
你看上去帅呆了！

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）。