ought to approximate
Regular verb: approximate - approximated- approximated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to approximate
you ought to approximate
she ought to approximate
we ought to approximate
you ought to approximate
they ought to approximate 	I ought to be approximating
you ought to be approximating
she ought to be approximating
we ought to be approximating
you ought to be approximating
they ought to be approximating	I ought to have approximated
you ought to have approximated
she ought to have approximated
we ought to have approximated
you ought to have approximated
they ought to have approximated	I ought to have been approximating
you ought to have been approximating
she ought to have been approximating
we ought to have been approximating
you ought to have been approximating
they ought to have been approximating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to approximate
you oughtn't to approximate
she oughtn't to approximate
we oughtn't to approximate
you oughtn't to approximate
they oughtn't to approximate 	I oughtn't to be approximating
you oughtn't to be approximating
she oughtn't to be approximating
we oughtn't to be approximating
you oughtn't to be approximating
they oughtn't to be approximating	I oughtn't to have approximated
you oughtn't to have approximated
she oughtn't to have approximated
we oughtn't to have approximated
you oughtn't to have approximated
they oughtn't to have approximated	I oughtn't to have been approximating
you oughtn't to have been approximating
she oughtn't to have been approximating
we oughtn't to have been approximating
you oughtn't to have been approximating
they oughtn't to have been approximating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I approximate?
ought to you approximate?
ought to she approximate?
ought to we approximate?
ought to you approximate?
ought to they approximate? 	ought to I be approximating?
ought to you be approximating?
ought to she be approximating?
ought to we be approximating?
ought to you be approximating?
ought to they be approximating? 	ought to I have approximated?
ought to you have approximated?
ought to she have approximated?
ought to we have approximated?
ought to you have approximated?
ought to they have approximated? 	ought to I have been approximating?
ought to you have been approximating?
ought to she have been approximating?
ought to we have been approximating?
ought to you have been approximating?
ought to they have been approximating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to approximate?
oughtn't you to approximate?
oughtn't she to approximate?
oughtn't we to approximate?
oughtn't you to approximate?
oughtn't they to approximate? 	oughtn't I to be approximating?
oughtn't you to be approximating?
oughtn't she to be approximating?
oughtn't we to be approximating?
oughtn't you to be approximating?
oughtn't they to be approximating? 	oughtn't I to have approximated?
oughtn't you to have approximated?
oughtn't she to have approximated?
oughtn't we to have approximated?
oughtn't you to have approximated?
oughtn't they to have approximated? 	oughtn't I to have been approximating?
oughtn't you to have been approximating?
oughtn't she to have been approximating?
oughtn't we to have been approximating?
oughtn't you to have been approximating?
oughtn't they to have been approximating?