ought to fail
Verbo regular: fail - failed- failed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to fail
you ought to fail
he ought to fail
we ought to fail
you ought to fail
they ought to fail 	I ought to be failing
you ought to be failing
he ought to be failing
we ought to be failing
you ought to be failing
they ought to be failing	I ought to have failed
you ought to have failed
he ought to have failed
we ought to have failed
you ought to have failed
they ought to have failed	I ought to have been failing
you ought to have been failing
he ought to have been failing
we ought to have been failing
you ought to have been failing
they ought to have been failing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I oughtn't to fail
you oughtn't to fail
he oughtn't to fail
we oughtn't to fail
you oughtn't to fail
they oughtn't to fail 	I oughtn't to be failing
you oughtn't to be failing
he oughtn't to be failing
we oughtn't to be failing
you oughtn't to be failing
they oughtn't to be failing	I oughtn't to have failed
you oughtn't to have failed
he oughtn't to have failed
we oughtn't to have failed
you oughtn't to have failed
they oughtn't to have failed	I oughtn't to have been failing
you oughtn't to have been failing
he oughtn't to have been failing
we oughtn't to have been failing
you oughtn't to have been failing
they oughtn't to have been failing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I fail?
ought to you fail?
ought to he fail?
ought to we fail?
ought to you fail?
ought to they fail? 	ought to I be failing?
ought to you be failing?
ought to he be failing?
ought to we be failing?
ought to you be failing?
ought to they be failing? 	ought to I have failed?
ought to you have failed?
ought to he have failed?
ought to we have failed?
ought to you have failed?
ought to they have failed? 	ought to I have been failing?
ought to you have been failing?
ought to he have been failing?
ought to we have been failing?
ought to you have been failing?
ought to they have been failing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
oughtn't I to fail?
oughtn't you to fail?
oughtn't he to fail?
oughtn't we to fail?
oughtn't you to fail?
oughtn't they to fail? 	oughtn't I to be failing?
oughtn't you to be failing?
oughtn't he to be failing?
oughtn't we to be failing?
oughtn't you to be failing?
oughtn't they to be failing? 	oughtn't I to have failed?
oughtn't you to have failed?
oughtn't he to have failed?
oughtn't we to have failed?
oughtn't you to have failed?
oughtn't they to have failed? 	oughtn't I to have been failing?
oughtn't you to have been failing?
oughtn't he to have been failing?
oughtn't we to have been failing?
oughtn't you to have been failing?
oughtn't they to have been failing?