ought to tremble
Regular verb: tremble - trembled- trembled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to tremble
you ought to tremble
he ought to tremble
we ought to tremble
you ought to tremble
they ought to tremble 	I ought to be trembling
you ought to be trembling
he ought to be trembling
we ought to be trembling
you ought to be trembling
they ought to be trembling	I ought to have trembled
you ought to have trembled
he ought to have trembled
we ought to have trembled
you ought to have trembled
they ought to have trembled	I ought to have been trembling
you ought to have been trembling
he ought to have been trembling
we ought to have been trembling
you ought to have been trembling
they ought to have been trembling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to tremble
you ought not to tremble
he ought not to tremble
we ought not to tremble
you ought not to tremble
they ought not to tremble 	I ought not to trembling
you ought not to trembling
he ought not to trembling
we ought not to trembling
you ought not to trembling
they ought not to trembling	I ought not to have trembled
you ought not to have trembled
he ought not to have trembled
we ought not to have trembled
you ought not to have trembled
they ought not to have trembled	I ought not to have been trembling
you ought not to have been trembling
he ought not to have been trembling
we ought not to have been trembling
you ought not to have been trembling
they ought not to have been trembling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I tremble?
ought to you tremble?
ought to he tremble?
ought to we tremble?
ought to you tremble?
ought to they tremble? 	ought to I be trembling?
ought to you be trembling?
ought to he be trembling?
ought to we be trembling?
ought to you be trembling?
ought to they be trembling? 	ought to I have trembled?
ought to you have trembled?
ought to he have trembled?
ought to we have trembled?
ought to you have trembled?
ought to they have trembled? 	ought to I have been trembling?
ought to you have been trembling?
ought to he have been trembling?
ought to we have been trembling?
ought to you have been trembling?
ought to they have been trembling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to tremble?
ought you not to tremble?
ought he not to tremble?
ought we not to tremble?
ought you not to tremble?
ought they not to tremble? 	ought I not to be trembling?
ought you not to be trembling?
ought he not to be trembling?
ought we not to be trembling?
ought you not to be trembling?
ought they not to be trembling? 	ought I not to have trembled?
ought you not to have trembled?
ought he not to have trembled?
ought we not to have trembled?
ought you not to have trembled?
ought they not to have trembled? 	ought I not to have been trembling?
ought you not to have been trembling?
ought he not to have been trembling?
ought we not to have been trembling?
ought you not to have been trembling?
ought they not to have been trembling?