W: Your knowledge of English is really surprising.
你的英语知识真的很让人惊讶。

M: Oh, it's nothing to speak of.
这没啥了不起的。

W: No, seriously. I am impressed.
不，真的，给我的很印象深刻。

M: Thank you. I appreciate the compliment.
谢谢你，感谢你的赞扬。