uses the structure that I just told you. 你 is a pronoun. 关心 is a noun. 你的 is an adjective. So 你的 modifies 关心. It lets us know where the 关心 is from.谓语：谢谢 宾语：你的关心 谢谢你的关心 is a sentence that does not have a subject, but it is correct and natural.