I should modify you should modify she should modify we should modify you should modify they should modify
V-ing form
I should be modifying you should be modifying she should be modifying we should be modifying you should be modifying they should be modifying
Perfect
I should have modified you should have modified she should have modified we should have modified you should have modified they should have modified
V-ing perfect
I should have been modifying you should have been modifying she should have been modifying we should have been modifying you should have been modifying they should have been modifying
Negation
Simple form
I should not modify you should not modify she should not modify we should not modify you should not modify they should not modify
V-ing form
I should not be modifying you should not be modifying she should not be modifying we should not be modifying you should not be modifying they should not be modifying
Perfect
I should not have modified you should not have modified she should not have modified we should not have modified you should not have modified they should not have modified
V-ing perfect
I should not have been modifying you should not have been modifying she should not have been modifying we should not have been modifying you should not have been modifying they should not have been modifying
Interrogative form
Simple form
should I modify? should you modify? should she modify? should we modify? should you modify? should they modify?
V-ing form
should I be modifying? should you be modifying? should she be modifying? should we be modifying? should you be modifying? should they be modifying?
Perfect
should I have modified? should you have modified? should she have modified? should we have modified? should you have modified? should they have modified?
V-ing perfect
should I have been modifying? should you have been modifying? should she have been modifying? should we have been modifying? should you have been modifying? should they have been modifying?
Interro-negative form
Simple form
should I not modify? should you not modify? should she not modify? should we not modify? should you not modify? should they not modify?
V-ing form
should I not be modifying? should you not be modifying? should she not be modifying? should we not be modifying? should you not be modifying? should they not be modifying?
Perfect
should I not have modified? should you not have modified? should she not have modified? should we not have modified? should you not have modified? should they not have modified?
V-ing perfect
should I not have been modifying? should you not have been modifying? should she not have been modifying? should we not have been modifying? should you not have been modifying? should they not have been modifying?