ought to sip
Regular verb: sip - sipped- sipped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sip
you ought to sip
he ought to sip
we ought to sip
you ought to sip
they ought to sip 	I ought to be sipping
you ought to be sipping
he ought to be sipping
we ought to be sipping
you ought to be sipping
they ought to be sipping	I ought to have sipped
you ought to have sipped
he ought to have sipped
we ought to have sipped
you ought to have sipped
they ought to have sipped	I ought to have been sipping
you ought to have been sipping
he ought to have been sipping
we ought to have been sipping
you ought to have been sipping
they ought to have been sipping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sip
you oughtn't to sip
he oughtn't to sip
we oughtn't to sip
you oughtn't to sip
they oughtn't to sip 	I oughtn't to be sipping
you oughtn't to be sipping
he oughtn't to be sipping
we oughtn't to be sipping
you oughtn't to be sipping
they oughtn't to be sipping	I oughtn't to have sipped
you oughtn't to have sipped
he oughtn't to have sipped
we oughtn't to have sipped
you oughtn't to have sipped
they oughtn't to have sipped	I oughtn't to have been sipping
you oughtn't to have been sipping
he oughtn't to have been sipping
we oughtn't to have been sipping
you oughtn't to have been sipping
they oughtn't to have been sipping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sip?
ought to you sip?
ought to he sip?
ought to we sip?
ought to you sip?
ought to they sip? 	ought to I be sipping?
ought to you be sipping?
ought to he be sipping?
ought to we be sipping?
ought to you be sipping?
ought to they be sipping? 	ought to I have sipped?
ought to you have sipped?
ought to he have sipped?
ought to we have sipped?
ought to you have sipped?
ought to they have sipped? 	ought to I have been sipping?
ought to you have been sipping?
ought to he have been sipping?
ought to we have been sipping?
ought to you have been sipping?
ought to they have been sipping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sip?
oughtn't you to sip?
oughtn't he to sip?
oughtn't we to sip?
oughtn't you to sip?
oughtn't they to sip? 	oughtn't I to be sipping?
oughtn't you to be sipping?
oughtn't he to be sipping?
oughtn't we to be sipping?
oughtn't you to be sipping?
oughtn't they to be sipping? 	oughtn't I to have sipped?
oughtn't you to have sipped?
oughtn't he to have sipped?
oughtn't we to have sipped?
oughtn't you to have sipped?
oughtn't they to have sipped? 	oughtn't I to have been sipping?
oughtn't you to have been sipping?
oughtn't he to have been sipping?
oughtn't we to have been sipping?
oughtn't you to have been sipping?
oughtn't they to have been sipping?