English verb conjugation
COULD EVALUATE

Regular verb: evaluate - evaluated - evaluated

Affirmation

Simple form	V-ing form
I could evaluate you could evaluate he could evaluate we could evaluate you could evaluate they could evaluate	I could be evaluating you could be evaluating he could be evaluating we could be evaluating you could be evaluating they could be evaluating
Perfect	V-ing perfect
I could have evaluated you could have evaluated he could have evaluated we could have evaluated you could have evaluated they could have evaluated	I could have been evaluating you could have been evaluating he could have been evaluating we could have been evaluating you could have been evaluating they could have been evaluating

Negation

Simple form	V-ing form
I couldn't evaluate you couldn't evaluate he couldn't evaluate we couldn't evaluate you couldn't evaluate they couldn't evaluate	I couldn't be evaluating you couldn't be evaluating he couldn't be evaluating we couldn't be evaluating you couldn't be evaluating they couldn't be evaluating
Perfect	V-ing perfect
I couldn't have evaluated you couldn't have evaluated he couldn't have evaluated we couldn't have evaluated you couldn't have evaluated they couldn't have evaluated	I couldn't have been evaluating you couldn't have been evaluating he couldn't have been evaluating we couldn't have been evaluating you couldn't have been evaluating they couldn't have been evaluating

Interrogative form

Simple form	V-ing form
could I evaluate? could you evaluate? could he evaluate? could we evaluate? could you evaluate? could they evaluate?	could I be evaluating? could you be evaluating? could he be evaluating? could we be evaluating? could you be evaluating? could they be evaluating?
Perfect	V-ing perfect
could I have evaluated? could you have evaluated? could he have evaluated? could we have evaluated? could you have evaluated? could they have evaluated?	could I have been evaluating? could you have been evaluating? could he have been evaluating? could we have been evaluating? could you have been evaluating? could they have been evaluating?

Interro-negative form

Simple form	V-ing form
couldn't I evaluate? couldn't you evaluate? couldn't he evaluate? couldn't we evaluate? couldn't you evaluate? couldn't they evaluate?	couldn't I be evaluating? couldn't you be evaluating? couldn't he be evaluating? couldn't we be evaluating? couldn't you be evaluating? couldn't they be evaluating?
Perfect	V-ing perfect
couldn't I have evaluated? couldn't you have evaluated? couldn't he have evaluated? couldn't we have evaluated? couldn't you have evaluated? couldn't they have evaluated?	couldn't I have been evaluating? couldn't you have been evaluating? couldn't he have been evaluating? couldn't we have been evaluating? couldn't you have been evaluating? couldn't they have been evaluating?