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 couldn't translate you couldn't translate he couldn't translate we couldn't translate you couldn't translate they couldn't translate
V-ing form
I couldn't be translating you couldn't be translating he couldn't be translating we couldn't be translating you couldn't be translating they couldn't be translating
Perfect
I couldn't have translated you couldn't have translated he couldn't have translated we couldn't have translated you couldn't have translated they couldn't have translated
V-ing perfect
I couldn't have been translating you couldn't have been translating he couldn't have been translating we couldn't have been translating you couldn't have been translating they couldn't 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
couldn't I translate? couldn't you translate? couldn't he translate? couldn't we translate? couldn't you translate? couldn't they translate?
V-ing form
couldn't I be translating? couldn't you be translating? couldn't he be translating? couldn't we be translating? couldn't you be translating? couldn't they be translating?
Perfect
couldn't I have translated? couldn't you have translated? couldn't he have translated? couldn't we have translated? couldn't you have translated? couldn't they have translated?
V-ing perfect
couldn't I have been translating? couldn't you have been translating? couldn't he have been translating? couldn't we have been translating? couldn't you have been translating? couldn't they have been translating?