Coniugazione del verbo inglese
COULD PUFF

Verbo regolare: puff - puffed - puffed

Affermazione

Forma semplice	Forma con V-ing
I could puff you could puff he could puff we could puff you could puff they could puff	I could be puffing you could be puffing he could be puffing we could be puffing you could be puffing they could be puffing
Perfetto	Perfetto con V-ing
I could have puffed you could have puffed he could have puffed we could have puffed you could have puffed they could have puffed	I could have been puffing you could have been puffing he could have been puffing we could have been puffing you could have been puffing they could have been puffing

Negazione

Forma semplice	Forma con V-ing
I could not puff you could not puff he could not puff we could not puff you could not puff they could not puff	I could not be puffing you could not be puffing he could not be puffing we could not be puffing you could not be puffing they could not be puffing
Perfetto	Perfetto con V-ing
I could not have puffed you could not have puffed he could not have puffed we could not have puffed you could not have puffed they could not have puffed	I could not have been puffing you could not have been puffing he could not have been puffing we could not have been puffing you could not have been puffing they could not have been puffing

Forma interrogativa

Forma semplice	Forma con V-ing
could I puff? could you puff? could he puff? could we puff? could you puff? could they puff?	could I be puffing? could you be puffing? could he be puffing? could we be puffing? could you be puffing? could they be puffing?
Perfetto	Perfetto con V-ing
could I have puffed? could you have puffed? could he have puffed? could we have puffed? could you have puffed? could they have puffed?	could I have been puffing? could you have been puffing? could he have been puffing? could we have been puffing? could you have been puffing? could they have been puffing?

Forma interro-negativa

Forma semplice	Forma con V-ing
could I not puff? could you not puff? could he not puff? could we not puff? could you not puff? could they not puff?	could I not be puffing? could you not be puffing? could he not be puffing? could we not be puffing? could you not be puffing? could they not be puffing?
Perfetto	Perfetto con V-ing
could I not have puffed? could you not have puffed? could he not have puffed? could we not have puffed? could you not have puffed? could they not have puffed?	could I not have been puffing? could you not have been puffing? could he not have been puffing? could we not have been puffing? could you not have been puffing? could they not have been puffing?