I, my, me, myself, mine 有什麼分別??

I hope the following examples can help you

1.a) I like music very much. ("I" is used as a subject and it should be put before the verb "like")
1b).John and I are good friends (Again, "I" here is also a subject and it is put before the verb "are" )

2a) She saw me 2 days ago ("me" is in the object position and it is put after the verb "saw". The subject in this sentence is "she")
2b) Ken gave me a book yesterday. (Again, "me" here is an object and the subject is "Ken". The pronoun "me" is positioned after the verb "gave)

3a) My pencil is on the desk. (We need to put a noun 名詞 after the possesive pronoun "my")
3b) Where is my book? (The noun "book" is put after "my")

4a) A: Whose book is it?
B: It is mine ("mine" means "my book")
4b) A: Is this your pen?
B: No, it is not mine (=No, it is not my pen)

5a) I do all homework by myself. (That means, no one helps me do homework)
5b) I go to school myself (That means others need not go with me)
5c) I hurt myself (Who hurts you? The answer is "I", not others)

I(用作動詞的主體)我(說話者或寫作者稱自己)
My:我的(于名詞或形容詞前作稱呼用)
Me:我(用作動詞或介詞的賓語,也可以獨立使用或用于動詞be之后)
Myself:(反身)用于動作及于說話或寫作者本人時)
Mine:我的(用于名詞或形容詞后作稱呼用)

i 係 pronoun , 即我,
my 都係 pronoun , 即我的
me 又係 pronoun , 作主格補語 / 用於as或than的後面, 代替I
myself 都係 pronoun , 係反身代名詞 , 即我自己
mine 又係 pronoun , 即我的東西