English verb conjugation
CAN HEAT

Regular verb: heat - heated - heated

Affirmation

Simple form	V-ing form
I can heat you can heat he can heat we can heat you can heat they can heat	I can be heating you can be heating he can be heating we can be heating you can be heating they can be heating
Perfect	V-ing perfect
I can have heated you can have heated he can have heated we can have heated you can have heated they can have heated	I can have been heating you can have been heating he can have been heating we can have been heating you can have been heating they can have been heating

Negation

Simple form	V-ing form
I cannot heat you cannot heat he cannot heat we cannot heat you cannot heat they cannot heat	I cannot be heating you cannot be heating he cannot be heating we cannot be heating you cannot be heating they cannot be heating
Perfect	V-ing perfect
I cannot have heated you cannot have heated he cannot have heated we cannot have heated you cannot have heated they cannot have heated	I cannot have been heating you cannot have been heating he cannot have been heating we cannot have been heating you cannot have been heating they cannot have been heating

Interrogative form

Simple form	V-ing form
can I heat? can you heat? can he heat? can we heat? can you heat? can they heat?	can I be heating? can you be heating? can he be heating? can we be heating? can you be heating? can they be heating?
Perfect	V-ing perfect
can I have heated? can you have heated? can he have heated? can we have heated? can you have heated? can they have heated?	can I have been heating? can you have been heating? can he have been heating? can we have been heating? can you have been heating? can they have been heating?

Interro-negative form

Simple form	V-ing form
can I not heat? can you not heat? can he not heat? can we not heat? can you not heat? can they not heat?	can I not be heating? can you not be heating? can he not be heating? can we not be heating? can you not be heating? can they not be heating?
Perfect	V-ing perfect
can I not have heated? can you not have heated? can he not have heated? can we not have heated? can you not have heated? can they not have heated?	can I not have been heating? can you not have been heating? can he not have been heating? can we not have been heating? can you not have been heating? can they not have been heating?