Sentences with 是
In Chinese, 是 (shì) states who or what someone or something is, or which category it belongs to.
The negative form of 是:
不是
不是 (bú shì) — is not
Basic structure
A + 是 + B
Meaning:
A is B.
or:
A counts as B.
Negative form
A + 不是 + B
Meaning:
A is not B.
我是法国人。
I am French.
Structure
我 + 是 + 法国人
I + be + French
我I
是be
法国人French person
她是中文老师。
She is a Chinese teacher.
Structure
她 + 是 + 中文老师
she + be + Chinese teacher
她she
是be
中文老师Chinese teacher
我老师不是法国人。
My teacher is not French.
Structure
我老师 + 不是 + 法国人
my teacher + is not + French
我老师my teacher
不是is not
法国人French person
The rule in short
Affirmative
A + 是 + B
A is B.
Examples:
我是法国人。
I am French.
她是中文老师。
She is a Chinese teacher.
Negative
A + 不是 + B
A is not B.
Example:
我老师不是法国人。
My teacher is not French.