sir explain me about question tags..?

Question tags are short phrases added at the end of a statement to turn it into a question. They are used to seek confirmation, agreement, or to express uncertainty. They consist of a positive or negative auxiliary verb and a pronoun. Here's how you can form question tags:

1. Match the auxiliary verb to the tense of the main verb in the statement. For example:
- If the main verb is in the present tense, use the auxiliary verb "do" or "does" for singular subjects and "do" for plural subjects.
- If the main verb is in the past tense, use the auxiliary verb "did."
- If the main verb is a modal verb (e.g., can, should, would), use the same modal verb in the question tag.

2. If the main statement is positive, make the question tag negative by using the opposite auxiliary verb. Likewise, if the main statement is negative, make the question tag positive. For example:
- Positive statement: "She is studying, isn't she?"
- Negative statement: "He didn't finish, did he?"

3. Use the appropriate pronoun in the question tag based on the subject of the main statement. For example:
- "I'm going, aren't I?"
- "They have finished, haven't they?"

Question tags are commonly used in informal speech and help to engage the listener and invite a response. They can also be used to check information or confirm understanding.