Learn to use 是, 的, 和, 都 through the topic of my family and friends.
Examples
我爸爸是医生。
My dad is a doctor.
Examples
我弟弟今年十岁。
My younger brother is ten years old this year.
Examples
我有一个哥哥。
I have an older brother.
Examples
姐姐在北京工作。
My older sister works in Beijing.
Examples
妈妈做饭很好吃。
Mom cooks very delicious food.
Examples
我有一个妹妹。
I have a younger sister.
Examples
他是我最好的朋友。
He is my best friend.
Examples
他是我的朋友。
He is my friend.
Examples
她是我的妈妈。
She is my mother.
S + 是 + người/thứ + 的Use 'of' at the end to show possession or a relationship. '的' attaches after a noun referring to a person or thing, and goes before the main noun. For example: '爸爸的' means 'dad's'.
他是我的哥哥。
He is my older brother.
她是我妈妈的朋友。
She is my mom's friend.
S + 和 + S + 都 + V/AdjUse '和' (and) to link two nouns, then use '都' (both/all) before the verb or adjective to show that both do the same thing or share the same characteristic.
爸爸和妈妈都爱我。
Both my dad and mom love me.
哥哥和姐姐都是学生。
Both my older brother and older sister are students.
Two friends are talking about each other's families.
这是谁？
Who is this?
他是我的爸爸。
He is my dad.
她是你妈妈吗？
Is she your mom?
对，她是我的妈妈。这是我哥哥和姐姐。
Yes, she is my mom. These are my older brother and older sister.
他们都是你的家人吗？
Are they all your family?
是的，他们都是我的家人。你的家人呢？
Yes, they are all my family. How about your family?