哥哥

哥哥

Older brother.

In this sentence, '哥哥' refers to the speaker's elder sibling who is male, showing familial relationships.

我的哥哥很喜欢打篮球。

My elder brother really likes playing basketball.

Here, '哥哥' is used metaphorically to liken the friend's caring attitude to that of an elder brother.

他是我的最好朋友，就像哥哥一样关心我。

He is my best friend and cares for me like an elder brother.

This usage demonstrates '哥哥' can be playfully paired with a modifier like '小' to create affectionate titles.

王宇是全班年纪最小的，我们都戏称他为小哥哥。

Wang Yu is the youngest in our class, and we often jokingly call him 'little brother'.