I can celebrate you can celebrate he can celebrate we can celebrate you can celebrate they can celebrate
V-ing form
I can be celebrating you can be celebrating he can be celebrating we can be celebrating you can be celebrating they can be celebrating
Perfect
I can have celebrated you can have celebrated he 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 he can have been celebrating we can have been celebrating you can have been celebrating they can have been celebrating
Negation
Simple form
I can't celebrate you can't celebrate he can't celebrate we can't celebrate you can't celebrate they can't celebrate
V-ing form
I can't be celebrating you can't be celebrating he can't be celebrating we can't be celebrating you can't be celebrating they can't be celebrating
Perfect
I can't have celebrated you can't have celebrated he can't have celebrated we can't have celebrated you can't have celebrated they can't have celebrated
V-ing perfect
I can't have been celebrating you can't have been celebrating he can't have been celebrating we can't have been celebrating you can't have been celebrating they can't have been celebrating
Interrogative form
Simple form
can I celebrate? can you celebrate? can he celebrate? can we celebrate? can you celebrate? can they celebrate?
V-ing form
can I be celebrating? can you be celebrating? can he be celebrating? can we be celebrating? can you be celebrating? can they be celebrating?
Perfect
can I have celebrated? can you have celebrated? can he 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 he have been celebrating? can we have been celebrating? can you have been celebrating? can they have been celebrating?
Interro-negative form
Simple form
can't I celebrate? can't you celebrate? can't he celebrate? can't we celebrate? can't you celebrate? can't they celebrate?
V-ing form
can't I be celebrating? can't you be celebrating? can't he be celebrating? can't we be celebrating? can't you be celebrating? can't they be celebrating?
Perfect
can't I have celebrated? can't you have celebrated? can't he have celebrated? can't we have celebrated? can't you have celebrated? can't they have celebrated?
V-ing perfect
can't I have been celebrating? can't you have been celebrating? can't he have been celebrating? can't we have been celebrating? can't you have been celebrating? can't they have been celebrating?