Did he have an accident ? or Did he has an accident ?

[Suthipong]

Did he have an accident ? or Did he has an accident ? and why ?

 

[lauralie2]

Did he have an accident?

The tense carrying verb is 'did'.

 

[shoaib 1]

Did he have an accident ? or Did he has an accident ? and why ?

"Did he have an accident?"
When auxiliary verbs like 'did', 'does' or 'do' are used, we use the simple(first) form of the verb. So "have" is the first form

 

[lauralie2]

"Did he have an accident?"
When auxiliary verbs like 'did', 'does' or 'do' are used, we use the simple(first) form of the verb. So "have" is the first form

Right, because there's this rule that says there can be only one tense carrying verb per simplex sentence. Since 'did' carries the tense (do -> did), 'have' must remain in its base form:

• Did he have ... :tick:
• Did he has ... :cross: <It's ungrammatical because there are two tense carrying verbs.>

 

[Suthipong]

Thank you.