我妈妈
wǒ mā ma
Expressing close possession without "de"
Drop the 的 for family, close friends, and the organisations you belong to.
Pronoun + Noun
How it works
我妈妈, 我朋友, 我们公司, 你家 — with relationships this close, 的 is normally left out. Including it isn't wrong, just a little stiff.
This only applies to people and groups you belong to. Objects keep the 的: 我的手机, never 我手机.
Examples
wǒ nǚ péng yǒu
我女朋友
my girlfriend
wǒ mā ma shì lǎo shī
我妈妈是老师。
My mother is a teacher.
wǒ men gōng sī hěn dà
我们公司很大。
Our company is big.