A - Construction of have (got) to

•		The auxiliary have (got) to is followed by the
	infinitive. 

	Example:	I have to (I've got to) go to the dentist's.
	
•		Have is conjugated thus:

				I have						We have
				You have				You have
				He / she / it has		They have

Note: Questions and negations are formed with do.
Example:	Do you have to go this way?
					I don't have to listen to your stupid advice.