Family Unit

爸爸

• dad
• mom
• brother
• sister

妈妈

• dad
• mom
• older sister
• younger sister

姐姐

• dad
• mom
• older sister
• younger sister

 妹妹

• older sister
• younger sister
• older brother
• younger brother

弟弟

• mom
• dad
• younger brother
• younger sister

哥哥

• younger brother
• younger sister
• older brother
• older sister

我有弟弟。

• I have an older brother.
• I have an younger brother.
• I don't have older brother.
• I don't have older sister.

我没有哥哥。

• I don't have younger sister.
• I don't have younger brother.
• I don't have older brother.
• I don't have a teacher.

我有一个姐姐。

• I have one older sister.
• I have two older sister.
• I have three older sister.
• I have four older sister.

我有三个妹妹。

• I have one younger sister.
• I have two younger sister.
• I have three younger sister.
• I have four younger sister.