如果你想夸别人的英语能力好，你可以说:

"Your Engpsh is excellent!" 意思是你的英语很优秀。
"Your Engpsh is really good!" 意思是你的英语很好。
"You have a great command of Engpsh!" 意思是你的英语掌握得很好。
"Your Engpsh skills are impressive!" 意思是你的英语能力令人印象深刻。

例如:

"I'm really impressed with your Engpsh skills. You speak so fluently!"
"Your Engpsh is so good! It's almost pke you're a native speaker."

希望这些表达能帮到你！