Yes/No Questions with 吗
To ask a simple yes/no question, simply add 吗 to the end of an affirmative sentence.
Structure
S + V + O + 吗?
Example
你 是 学生 吗 ?
Are you a student?
Affirmative + negative questions
Another common option to ask a yes/no question is the affirmative/negative question form.
Structure
Think of it as the "verb not verb" question form.
S+ V+ 不 + V + O?
Example
你 是 不 是 学生?
Are you a student?