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 ought not to fail
you ought not to fail
he ought not to fail
we ought not to fail
you ought not to fail
they ought not to fail 	I ought not to failing
you ought not to failing
he ought not to failing
we ought not to failing
you ought not to failing
they ought not to failing	I ought not to have failed
you ought not to have failed
he ought not to have failed
we ought not to have failed
you ought not to have failed
they ought not to have failed	I ought not to have been failing
you ought not to have been failing
he ought not to have been failing
we ought not to have been failing
you ought not to have been failing
they ought not 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 	
ought I not to fail?
ought you not to fail?
ought he not to fail?
ought we not to fail?
ought you not to fail?
ought they not to fail? 	ought I not to be failing?
ought you not to be failing?
ought he not to be failing?
ought we not to be failing?
ought you not to be failing?
ought they not to be failing? 	ought I not to have failed?
ought you not to have failed?
ought he not to have failed?
ought we not to have failed?
ought you not to have failed?
ought they not to have failed? 	ought I not to have been failing?
ought you not to have been failing?
ought he not to have been failing?
ought we not to have been failing?
ought you not to have been failing?
ought they not to have been failing?