English verb conjugation
COULD EVALUATE

Regular verb: evaluate - evaluated - evaluated

Affirmation

Simple form	V-ing form
I could evaluate you could evaluate she could evaluate we could evaluate you could evaluate they could evaluate	I could be evaluating you could be evaluating she 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 she 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 she 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 she 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 she 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 she 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 she 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 she evaluate? could we evaluate? could you evaluate? could they evaluate?	could I be evaluating? could you be evaluating? could she 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 she 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 she 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 she 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 she 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 she 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 she have been evaluating? couldn't we have been evaluating? couldn't you have been evaluating? couldn't they have been evaluating?