English verb conjugation
COULD INTERPRET

Regular verb: interpret - interpreted - interpreted

Affirmation

Simple form	V-ing form
I could interpret you could interpret he could interpret we could interpret you could interpret they could interpret	I could be interpreting you could be interpreting he could be interpreting we could be interpreting you could be interpreting they could be interpreting
Perfect	V-ing perfect
I could have interpreted you could have interpreted he could have interpreted we could have interpreted you could have interpreted they could have interpreted	I could have been interpreting you could have been interpreting he could have been interpreting we could have been interpreting you could have been interpreting they could have been interpreting

Negation

Simple form	V-ing form
I couldn't interpret you couldn't interpret he couldn't interpret we couldn't interpret you couldn't interpret they couldn't interpret	I couldn't be interpreting you couldn't be interpreting he couldn't be interpreting we couldn't be interpreting you couldn't be interpreting they couldn't be interpreting
Perfect	V-ing perfect
I couldn't have interpreted you couldn't have interpreted he couldn't have interpreted we couldn't have interpreted you couldn't have interpreted they couldn't have interpreted	I couldn't have been interpreting you couldn't have been interpreting he couldn't have been interpreting we couldn't have been interpreting you couldn't have been interpreting they couldn't have been interpreting

Interrogative form

Simple form	V-ing form
could I interpret? could you interpret? could he interpret? could we interpret? could you interpret? could they interpret?	could I be interpreting? could you be interpreting? could he be interpreting? could we be interpreting? could you be interpreting? could they be interpreting?
Perfect	V-ing perfect
could I have interpreted? could you have interpreted? could he have interpreted? could we have interpreted? could you have interpreted? could they have interpreted?	could I have been interpreting? could you have been interpreting? could he have been interpreting? could we have been interpreting? could you have been interpreting? could they have been interpreting?

Interro-negative form

Simple form	V-ing form
couldn't I interpret? couldn't you interpret? couldn't he interpret? couldn't we interpret? couldn't you interpret? couldn't they interpret?	couldn't I be interpreting? couldn't you be interpreting? couldn't he be interpreting? couldn't we be interpreting? couldn't you be interpreting? couldn't they be interpreting?
Perfect	V-ing perfect
couldn't I have interpreted? couldn't you have interpreted? couldn't he have interpreted? couldn't we have interpreted? couldn't you have interpreted? couldn't they have interpreted?	couldn't I have been interpreting? couldn't you have been interpreting? couldn't he have been interpreting? couldn't we have been interpreting? couldn't you have been interpreting? couldn't they have been interpreting?