I really have to hand it to you.
→ 정말 너는 인정해 줘야겠다.

[예문]
A: I didn't know that you were so fluent in French, Spanish and English.
A: 난 네가 불어, 스페인어에 영어까지 그렇게 유창한 줄 몰랐어.

B: I was just lucky to learn them when I was young.
B: 그냥 어렸을 때 운 좋게 배운 거야.

A: Anyway, I really have to hand it to you. Rachel, you rock!
A: 어쨌든, 정말 너는 인정해 줘야겠다. Rachel, 넌 정말 멋져!

B: You don't have to say that.
B: 그렇게 말할 필요까진 없어.