I could translate you could translate he could translate we could translate you could translate they could translate
V-ing form
I could be translating you could be translating he could be translating we could be translating you could be translating they could be translating
Perfect
I could have translated you could have translated he could have translated we could have translated you could have translated they could have translated
V-ing perfect
I could have been translating you could have been translating he could have been translating we could have been translating you could have been translating they could have been translating
Negation
Simple form
I could not translate you could not translate he could not translate we could not translate you could not translate they could not translate
V-ing form
I could not be translating you could not be translating he could not be translating we could not be translating you could not be translating they could not be translating
Perfect
I could not have translated you could not have translated he could not have translated we could not have translated you could not have translated they could not have translated
V-ing perfect
I could not have been translating you could not have been translating he could not have been translating we could not have been translating you could not have been translating they could not have been translating
Interrogative form
Simple form
could I translate? could you translate? could he translate? could we translate? could you translate? could they translate?
V-ing form
could I be translating? could you be translating? could he be translating? could we be translating? could you be translating? could they be translating?
Perfect
could I have translated? could you have translated? could he have translated? could we have translated? could you have translated? could they have translated?
V-ing perfect
could I have been translating? could you have been translating? could he have been translating? could we have been translating? could you have been translating? could they have been translating?
Interro-negative form
Simple form
could I not translate? could you not translate? could he not translate? could we not translate? could you not translate? could they not translate?
V-ing form
could I not be translating? could you not be translating? could he not be translating? could we not be translating? could you not be translating? could they not be translating?
Perfect
could I not have translated? could you not have translated? could he not have translated? could we not have translated? could you not have translated? could they not have translated?
V-ing perfect
could I not have been translating? could you not have been translating? could he not have been translating? could we not have been translating? could you not have been translating? could they not have been translating?