I can extemporize you can extemporize he can extemporize we can extemporize you can extemporize they can extemporize
Forme en V-ing
I can be extemporizing you can be extemporizing he can be extemporizing we can be extemporizing you can be extemporizing they can be extemporizing
Perfect
I can have extemporized you can have extemporized he can have extemporized we can have extemporized you can have extemporized they can have extemporized
Perfect en V-ing
I can have been extemporizing you can have been extemporizing he can have been extemporizing we can have been extemporizing you can have been extemporizing they can have been extemporizing
Négation
Forme simple
I cannot extemporize you cannot extemporize he cannot extemporize we cannot extemporize you cannot extemporize they cannot extemporize
Forme en V-ing
I cannot be extemporizing you cannot be extemporizing he cannot be extemporizing we cannot be extemporizing you cannot be extemporizing they cannot be extemporizing
Perfect
I cannot have extemporized you cannot have extemporized he cannot have extemporized we cannot have extemporized you cannot have extemporized they cannot have extemporized
Perfect en V-ing
I cannot have been extemporizing you cannot have been extemporizing he cannot have been extemporizing we cannot have been extemporizing you cannot have been extemporizing they cannot have been extemporizing
Forme interrogative
Forme simple
can I extemporize? can you extemporize? can he extemporize? can we extemporize? can you extemporize? can they extemporize?
Forme en V-ing
can I be extemporizing? can you be extemporizing? can he be extemporizing? can we be extemporizing? can you be extemporizing? can they be extemporizing?
Perfect
can I have extemporized? can you have extemporized? can he have extemporized? can we have extemporized? can you have extemporized? can they have extemporized?
Perfect en V-ing
can I have been extemporizing? can you have been extemporizing? can he have been extemporizing? can we have been extemporizing? can you have been extemporizing? can they have been extemporizing?
Forme interro-négative
Forme simple
can I not extemporize? can you not extemporize? can he not extemporize? can we not extemporize? can you not extemporize? can they not extemporize?
Forme en V-ing
can I not be extemporizing? can you not be extemporizing? can he not be extemporizing? can we not be extemporizing? can you not be extemporizing? can they not be extemporizing?
Perfect
can I not have extemporized? can you not have extemporized? can he not have extemporized? can we not have extemporized? can you not have extemporized? can they not have extemporized?
Perfect en V-ing
can I not have been extemporizing? can you not have been extemporizing? can he not have been extemporizing? can we not have been extemporizing? can you not have been extemporizing? can they not have been extemporizing?