What is a tag question?
A tag question is a sentence with a small part at the end
that makes it a question.
You like kittens.
This is a statement, not a question.
Now we add a small part at the end of it:
You like kittens, don't you?
Now this sentence is a question. We call it a tag question.
The little part at the end (after the comma) is called a question tag.
(A tag is a word or phrase that is added to a sentence.)
Why do we need these question tags?
We use questions tags (such as "don't you?", "isn't
it?") to turn statements into questions, or to check
that a statement is correct.
It's like saying "Am I right?" or "Is that correct?"
Using question tags can help you sound more
natural in English.
Tag Question Rules
In most cases, the helping verb (or BE verb) from the
positive statement is repeated in the tag and changed
Statement: Brenda is sad.
Question tag: isn't she?
Tag question: Brenda is sad, isn't she?