I could botanize you could botanize he could botanize we could botanize you could botanize they could botanize
Forme en V-ing
I could be botanizing you could be botanizing he could be botanizing we could be botanizing you could be botanizing they could be botanizing
Perfect
I could have botanized you could have botanized he could have botanized we could have botanized you could have botanized they could have botanized
Perfect en V-ing
I could have been botanizing you could have been botanizing he could have been botanizing we could have been botanizing you could have been botanizing they could have been botanizing
Négation
Forme simple
I could not botanize you could not botanize he could not botanize we could not botanize you could not botanize they could not botanize
Forme en V-ing
I could not be botanizing you could not be botanizing he could not be botanizing we could not be botanizing you could not be botanizing they could not be botanizing
Perfect
I could not have botanized you could not have botanized he could not have botanized we could not have botanized you could not have botanized they could not have botanized
Perfect en V-ing
I could not have been botanizing you could not have been botanizing he could not have been botanizing we could not have been botanizing you could not have been botanizing they could not have been botanizing
Forme interrogative
Forme simple
could I botanize? could you botanize? could he botanize? could we botanize? could you botanize? could they botanize?
Forme en V-ing
could I be botanizing? could you be botanizing? could he be botanizing? could we be botanizing? could you be botanizing? could they be botanizing?
Perfect
could I have botanized? could you have botanized? could he have botanized? could we have botanized? could you have botanized? could they have botanized?
Perfect en V-ing
could I have been botanizing? could you have been botanizing? could he have been botanizing? could we have been botanizing? could you have been botanizing? could they have been botanizing?
Forme interro-négative
Forme simple
could I not botanize? could you not botanize? could he not botanize? could we not botanize? could you not botanize? could they not botanize?
Forme en V-ing
could I not be botanizing? could you not be botanizing? could he not be botanizing? could we not be botanizing? could you not be botanizing? could they not be botanizing?
Perfect
could I not have botanized? could you not have botanized? could he not have botanized? could we not have botanized? could you not have botanized? could they not have botanized?
Perfect en V-ing
could I not have been botanizing? could you not have been botanizing? could he not have been botanizing? could we not have been botanizing? could you not have been botanizing? could they not have been botanizing?