The tag question uses the auxiliary that is, or would be used with the main verb. If the main verb is negated, the tag is positive and vice versa. The tenses match.
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The tag question uses the auxiliary that is, or would be used with the main verb.
If the main verb is negated, the tag is positive and vice versa.
The tenses match.
She doesn't live here, does she?
She lives here, doesn't she?
He is doing his homework, isn't he?
He was doing his homework, wasn't he?
He's not doing his homework, is he?
Modal auxil
healerIt has to be that, hasn't it?
No. People seldom use 'have' like that anymore these days.
American English turned away from that around 1950, and British English about 25 years later.
That means that nowadays you use auxiliary do for questions and negations of non-auxiliary 'have', although