正文: Spot on. 一点没错。 Nothing wrong with that. 这没错。 I guess you are right. 我猜你是对的。
经典句扩展: Yes, you are correct in saying this. 你这么说是对的。 That's about it. 差不多。 I should say your understanding is perfectly right. 我得说你的理解是非常正确的。 I know for sure. 我确信。 I believe so. 我想是吧。