1. Explain it simply
Use 有 to say something exists or someone has something.
Use 没有 to say something does not exist or you do not have it.
2. Show examples
我有朋友。
Wǒ yǒu péngyou.
I have friends.
Subject + 有 + noun
我没有钱。
Wǒ méiyǒu qián.
I don't have money.
Use 没有 for not having
学校有老师。
Xuéxiào yǒu lǎoshī.
There are teachers at school.
Place + 有 + noun
3. Share a tip
Don't use 不 with 有. Use 没有 instead.

