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