How do you use question tags to express uncertainty?

How do you use question tags to express uncertainty?

To use question tags to express uncertainty, you typically add a short question at the end of a statement. The question tag is formed by using an auxiliary verb that matches the tense of the statement, followed by a pronoun. For example, if the statement is "You don't know him," the question tag would be "do you?" This expresses uncertainty and seeks confirmation or clarification from the listener.