I could improvise you could improvise she could improvise we could improvise you could improvise they could improvise
Forme en V-ing
I could be improvising you could be improvising she could be improvising we could be improvising you could be improvising they could be improvising
Perfect
I could have improvised you could have improvised she could have improvised we could have improvised you could have improvised they could have improvised
Perfect en V-ing
I could have been improvising you could have been improvising she could have been improvising we could have been improvising you could have been improvising they could have been improvising
Négation
Forme simple
I couldn't improvise you couldn't improvise she couldn't improvise we couldn't improvise you couldn't improvise they couldn't improvise
Forme en V-ing
I couldn't be improvising you couldn't be improvising she couldn't be improvising we couldn't be improvising you couldn't be improvising they couldn't be improvising
Perfect
I couldn't have improvised you couldn't have improvised she couldn't have improvised we couldn't have improvised you couldn't have improvised they couldn't have improvised
Perfect en V-ing
I couldn't have been improvising you couldn't have been improvising she couldn't have been improvising we couldn't have been improvising you couldn't have been improvising they couldn't have been improvising
Forme interrogative
Forme simple
could I improvise? could you improvise? could she improvise? could we improvise? could you improvise? could they improvise?
Forme en V-ing
could I be improvising? could you be improvising? could she be improvising? could we be improvising? could you be improvising? could they be improvising?
Perfect
could I have improvised? could you have improvised? could she have improvised? could we have improvised? could you have improvised? could they have improvised?
Perfect en V-ing
could I have been improvising? could you have been improvising? could she have been improvising? could we have been improvising? could you have been improvising? could they have been improvising?
Forme interro-négative
Forme simple
couldn't I improvise? couldn't you improvise? couldn't she improvise? couldn't we improvise? couldn't you improvise? couldn't they improvise?
Forme en V-ing
couldn't I be improvising? couldn't you be improvising? couldn't she be improvising? couldn't we be improvising? couldn't you be improvising? couldn't they be improvising?
Perfect
couldn't I have improvised? couldn't you have improvised? couldn't she have improvised? couldn't we have improvised? couldn't you have improvised? couldn't they have improvised?
Perfect en V-ing
couldn't I have been improvising? couldn't you have been improvising? couldn't she have been improvising? couldn't we have been improvising? couldn't you have been improvising? couldn't they have been improvising?