English verb conjugation
OUGHT TO EXCAVATE

Regular verb: excavate - excavated - excavated

Affirmation

Simple form	V-ing form
I ought to excavate you ought to excavate he ought to excavate we ought to excavate you ought to excavate they ought to excavate	I ought to be excavating you ought to be excavating he ought to be excavating we ought to be excavating you ought to be excavating they ought to be excavating
Perfect	V-ing perfect
I ought to have excavated you ought to have excavated he ought to have excavated we ought to have excavated you ought to have excavated they ought to have excavated	I ought to have been excavating you ought to have been excavating he ought to have been excavating we ought to have been excavating you ought to have been excavating they ought to have been excavating

Negation

Simple form	V-ing form
I oughtn't to excavate you oughtn't to excavate he oughtn't to excavate we oughtn't to excavate you oughtn't to excavate they oughtn't to excavate	I oughtn't to be excavating you oughtn't to be excavating he oughtn't to be excavating we oughtn't to be excavating you oughtn't to be excavating they oughtn't to be excavating
Perfect	V-ing perfect
I oughtn't to have excavated you oughtn't to have excavated he oughtn't to have excavated we oughtn't to have excavated you oughtn't to have excavated they oughtn't to have excavated	I oughtn't to have been excavating you oughtn't to have been excavating he oughtn't to have been excavating we oughtn't to have been excavating you oughtn't to have been excavating they oughtn't to have been excavating

Interrogative form

Simple form	V-ing form
ought to I excavate? ought to you excavate? ought to he excavate? ought to we excavate? ought to you excavate? ought to they excavate?	ought to I be excavating? ought to you be excavating? ought to he be excavating? ought to we be excavating? ought to you be excavating? ought to they be excavating?
Perfect	V-ing perfect
ought to I have excavated? ought to you have excavated? ought to he have excavated? ought to we have excavated? ought to you have excavated? ought to they have excavated?	ought to I have been excavating? ought to you have been excavating? ought to he have been excavating? ought to we have been excavating? ought to you have been excavating? ought to they have been excavating?

Interro-negative form

Simple form	V-ing form
oughtn't I to excavate? oughtn't you to excavate? oughtn't he to excavate? oughtn't we to excavate? oughtn't you to excavate? oughtn't they to excavate?	oughtn't I to be excavating? oughtn't you to be excavating? oughtn't he to be excavating? oughtn't we to be excavating? oughtn't you to be excavating? oughtn't they to be excavating?
Perfect	V-ing perfect
oughtn't I to have excavated? oughtn't you to have excavated? oughtn't he to have excavated? oughtn't we to have excavated? oughtn't you to have excavated? oughtn't they to have excavated?	oughtn't I to have been excavating? oughtn't you to have been excavating? oughtn't he to have been excavating? oughtn't we to have been excavating? oughtn't you to have been excavating? oughtn't they to have been excavating?