I can celebrate you can celebrate she can celebrate we can celebrate you can celebrate they can celebrate
V-ing form
I can be celebrating you can be celebrating she can be celebrating we can be celebrating you can be celebrating they can be celebrating
Perfect
I can have celebrated you can have celebrated she can have celebrated we can have celebrated you can have celebrated they can have celebrated
V-ing perfect
I can have been celebrating you can have been celebrating she can have been celebrating we can have been celebrating you can have been celebrating they can have been celebrating
Negation
Simple form
I cannot celebrate you cannot celebrate she cannot celebrate we cannot celebrate you cannot celebrate they cannot celebrate
V-ing form
I cannot be celebrating you cannot be celebrating she cannot be celebrating we cannot be celebrating you cannot be celebrating they cannot be celebrating
Perfect
I cannot have celebrated you cannot have celebrated she cannot have celebrated we cannot have celebrated you cannot have celebrated they cannot have celebrated
V-ing perfect
I cannot have been celebrating you cannot have been celebrating she cannot have been celebrating we cannot have been celebrating you cannot have been celebrating they cannot have been celebrating
Interrogative form
Simple form
can I celebrate? can you celebrate? can she celebrate? can we celebrate? can you celebrate? can they celebrate?
V-ing form
can I be celebrating? can you be celebrating? can she be celebrating? can we be celebrating? can you be celebrating? can they be celebrating?
Perfect
can I have celebrated? can you have celebrated? can she have celebrated? can we have celebrated? can you have celebrated? can they have celebrated?
V-ing perfect
can I have been celebrating? can you have been celebrating? can she have been celebrating? can we have been celebrating? can you have been celebrating? can they have been celebrating?
Interro-negative form
Simple form
can I not celebrate? can you not celebrate? can she not celebrate? can we not celebrate? can you not celebrate? can they not celebrate?
V-ing form
can I not be celebrating? can you not be celebrating? can she not be celebrating? can we not be celebrating? can you not be celebrating? can they not be celebrating?
Perfect
can I not have celebrated? can you not have celebrated? can she not have celebrated? can we not have celebrated? can you not have celebrated? can they not have celebrated?
V-ing perfect
can I not have been celebrating? can you not have been celebrating? can she not have been celebrating? can we not have been celebrating? can you not have been celebrating? can they not have been celebrating?