I should operate you should operate she should operate we should operate you should operate they should operate
V-ing form
I should be operating you should be operating she should be operating we should be operating you should be operating they should be operating
Perfect
I should have operated you should have operated she should have operated we should have operated you should have operated they should have operated
V-ing perfect
I should have been operating you should have been operating she should have been operating we should have been operating you should have been operating they should have been operating
Negation
Simple form
I should not operate you should not operate she should not operate we should not operate you should not operate they should not operate
V-ing form
I should not be operating you should not be operating she should not be operating we should not be operating you should not be operating they should not be operating
Perfect
I should not have operated you should not have operated she should not have operated we should not have operated you should not have operated they should not have operated
V-ing perfect
I should not have been operating you should not have been operating she should not have been operating we should not have been operating you should not have been operating they should not have been operating
Interrogative form
Simple form
should I operate? should you operate? should she operate? should we operate? should you operate? should they operate?
V-ing form
should I be operating? should you be operating? should she be operating? should we be operating? should you be operating? should they be operating?
Perfect
should I have operated? should you have operated? should she have operated? should we have operated? should you have operated? should they have operated?
V-ing perfect
should I have been operating? should you have been operating? should she have been operating? should we have been operating? should you have been operating? should they have been operating?
Interro-negative form
Simple form
should I not operate? should you not operate? should she not operate? should we not operate? should you not operate? should they not operate?
V-ing form
should I not be operating? should you not be operating? should she not be operating? should we not be operating? should you not be operating? should they not be operating?
Perfect
should I not have operated? should you not have operated? should she not have operated? should we not have operated? should you not have operated? should they not have operated?
V-ing perfect
should I not have been operating? should you not have been operating? should she not have been operating? should we not have been operating? should you not have been operating? should they not have been operating?