The difference in usage between my and mine

My is an adjective possessive pronoun, followed by a noun. It is used as an attributive to modify the noun in the sentence and cannot be used alone. Mine is a nominal possessive pronoun, not followed by a noun, but it functions like a noun and can be used alone as subject, object and predicate in a sentence.

1. Usage of my:

My is an adjective possessive pronoun, used to modify nouns or pronouns, indicating that something belongs to "me". For example:

This is my book. This is my book.

My books on her desk. My books are on her desk.

2. Usage of mine:

Mine is also an adjective possessive pronoun, but it can only be used alone and cannot modify nouns or pronouns. For example:

Whose book is this? It's?mine. Whose book is this? be mine.

I can't find my book. Is this one?mine?I can't find my book. Is this one?mine?

In addition, mine can also be used as a pronoun for Li Hupei, meaning "my things". For example:

These books are?mine. These books are mine.

Examples of my and mine:

1. Examples of my:

(1) This is my cake that I just finished this morning.

This is my cake that I just finished this morning.

（2）This is the cake my mom gave me.

This is the cake my mom gave me.

This is the cake my mom gave me.

(3) This is my favorite piece of cake.

This is my favorite piece of cake.

2. Examples of mine:

(1) This is Jack and Michael's cake, where is mine?

This is Jack and Michael's cake, where is mine? Where is?

（2）This is the cake made by my sister and brother, where is mine?

This is the cake made by my sister and brother, where is mine?

This is the cake made by my sister and brother, where is mine?