“你真好”的英文表达有多种，以下是一些常见的翻译：

It's very kind of you.

It's kind of you.

It's so nice of you.

You are really good.

It's very nice/kind of you.

这些表达都传达了“你真好”的意思，可以根据具体的语境选择合适的表达方式。例如，在正式场合或需要强调礼貌时，可以使用“It's very kind of you.”；在较为随意的场合，可以使用“It's so nice of you.”或“You are really good.”。