Positive--he/she/it HAS TO go Negative--I/you/we/they DON'T (do not) have to go he/she/it DOESN'T have to go Question--DO I/you/we/they have to go? DOES he/she/it have to go? Short answer-- Yes,I/you/we/they DO. No, I/you/we/they DON'T. Yes,he/she/it DOES. No, he/she/it DOESN'T.