I could expostulate you could expostulate he could expostulate we could expostulate you could expostulate they could expostulate
Forme en V-ing
I could be expostulating you could be expostulating he could be expostulating we could be expostulating you could be expostulating they could be expostulating
Perfect
I could have expostulated you could have expostulated he could have expostulated we could have expostulated you could have expostulated they could have expostulated
Perfect en V-ing
I could have been expostulating you could have been expostulating he could have been expostulating we could have been expostulating you could have been expostulating they could have been expostulating
Négation
Forme simple
I could not expostulate you could not expostulate he could not expostulate we could not expostulate you could not expostulate they could not expostulate
Forme en V-ing
I could not be expostulating you could not be expostulating he could not be expostulating we could not be expostulating you could not be expostulating they could not be expostulating
Perfect
I could not have expostulated you could not have expostulated he could not have expostulated we could not have expostulated you could not have expostulated they could not have expostulated
Perfect en V-ing
I could not have been expostulating you could not have been expostulating he could not have been expostulating we could not have been expostulating you could not have been expostulating they could not have been expostulating
Forme interrogative
Forme simple
could I expostulate? could you expostulate? could he expostulate? could we expostulate? could you expostulate? could they expostulate?
Forme en V-ing
could I be expostulating? could you be expostulating? could he be expostulating? could we be expostulating? could you be expostulating? could they be expostulating?
Perfect
could I have expostulated? could you have expostulated? could he have expostulated? could we have expostulated? could you have expostulated? could they have expostulated?
Perfect en V-ing
could I have been expostulating? could you have been expostulating? could he have been expostulating? could we have been expostulating? could you have been expostulating? could they have been expostulating?
Forme interro-négative
Forme simple
could I not expostulate? could you not expostulate? could he not expostulate? could we not expostulate? could you not expostulate? could they not expostulate?
Forme en V-ing
could I not be expostulating? could you not be expostulating? could he not be expostulating? could we not be expostulating? could you not be expostulating? could they not be expostulating?
Perfect
could I not have expostulated? could you not have expostulated? could he not have expostulated? could we not have expostulated? could you not have expostulated? could they not have expostulated?
Perfect en V-ing
could I not have been expostulating? could you not have been expostulating? could he not have been expostulating? could we not have been expostulating? could you not have been expostulating? could they not have been expostulating?