是否

是否 is a conjunction used to introduce a question or a choice between two alternatives. It literally means 'is or not' and is commonly used in questions that ask for confirmation or decision-making.

The character 是 (shì) means 'to be' or 'is,' while 否 (fǒu) means 'not' or 'no.' Together, they form a structure that expresses a binary choice or a condition, often used in formal or written language.

是否 is frequently used in formal writing, academic contexts, and in structured questions. It can also appear in conditional sentences, such as 'Whether you agree or not, we will proceed.' Understanding 是否 helps learners grasp how Chinese structures logical choices and conditions.