A speaker or writer uses your to indicate that something belongs or relates to the person or people that they are talking or writing to.
双语例句
例：
Emma, I trust your opinion a great deal.
埃玛，我非常相信你的观点。
例：
I left all of your messages on your desk.
我把你的所有便条都放到你的书桌上了。
2.?你的（口语中用于泛指属于或有关任何人的）
In spoken English and informal written English, your is sometimes used to indicate that something belongs to or relates to people in general.
双语例句
例：
Painkillers are very useful in small amounts to bring your temperature down.
小剂量的止痛药对于降低体温非常有用。
3.?（口语中用于形容词前，表示所指事物为某类事物的典型）
In spoken English, a speaker sometimes uses your before an adjective such as 'typical' or 'normal' to indicate that the thing referred to is a typical example of its type.