I can philosophize you can philosophize she can philosophize we can philosophize you can philosophize they can philosophize
V-ing form
I can be philosophizing you can be philosophizing she can be philosophizing we can be philosophizing you can be philosophizing they can be philosophizing
Perfect
I can have philosophized you can have philosophized she can have philosophized we can have philosophized you can have philosophized they can have philosophized
V-ing perfect
I can have been philosophizing you can have been philosophizing she can have been philosophizing we can have been philosophizing you can have been philosophizing they can have been philosophizing
Negation
Simple form
I cannot philosophize you cannot philosophize she cannot philosophize we cannot philosophize you cannot philosophize they cannot philosophize
V-ing form
I cannot be philosophizing you cannot be philosophizing she cannot be philosophizing we cannot be philosophizing you cannot be philosophizing they cannot be philosophizing
Perfect
I cannot have philosophized you cannot have philosophized she cannot have philosophized we cannot have philosophized you cannot have philosophized they cannot have philosophized
V-ing perfect
I cannot have been philosophizing you cannot have been philosophizing she cannot have been philosophizing we cannot have been philosophizing you cannot have been philosophizing they cannot have been philosophizing
Interrogative form
Simple form
can I philosophize? can you philosophize? can she philosophize? can we philosophize? can you philosophize? can they philosophize?
V-ing form
can I be philosophizing? can you be philosophizing? can she be philosophizing? can we be philosophizing? can you be philosophizing? can they be philosophizing?
Perfect
can I have philosophized? can you have philosophized? can she have philosophized? can we have philosophized? can you have philosophized? can they have philosophized?
V-ing perfect
can I have been philosophizing? can you have been philosophizing? can she have been philosophizing? can we have been philosophizing? can you have been philosophizing? can they have been philosophizing?
Interro-negative form
Simple form
can I not philosophize? can you not philosophize? can she not philosophize? can we not philosophize? can you not philosophize? can they not philosophize?
V-ing form
can I not be philosophizing? can you not be philosophizing? can she not be philosophizing? can we not be philosophizing? can you not be philosophizing? can they not be philosophizing?
Perfect
can I not have philosophized? can you not have philosophized? can she not have philosophized? can we not have philosophized? can you not have philosophized? can they not have philosophized?
V-ing perfect
can I not have been philosophizing? can you not have been philosophizing? can she not have been philosophizing? can we not have been philosophizing? can you not have been philosophizing? can they not have been philosophizing?