I'd be dusting you'd be dusting she'd be dusting we'd be dusting you'd be dusting they'd be dusting
Perfect
I should've dusted you should've dusted she should've dusted we should've dusted you should've dusted they should've dusted
V-ing perfect
I should've been dusting you should've been dusting she should've been dusting we should've been dusting you should've been dusting they should've been dusting
Negation
Simple form
I shouldn't dust you shouldn't dust she shouldn't dust we shouldn't dust you shouldn't dust they shouldn't dust
V-ing form
I shouldn't be dusting you shouldn't be dusting she shouldn't be dusting we shouldn't be dusting you shouldn't be dusting they shouldn't be dusting
Perfect
I shouldn't have dusted you shouldn't have dusted she shouldn't have dusted we shouldn't have dusted you shouldn't have dusted they shouldn't have dusted
V-ing perfect
I shouldn't have been dusting you shouldn't have been dusting she shouldn't have been dusting we shouldn't have been dusting you shouldn't have been dusting they shouldn't have been dusting
Interrogative form
Simple form
should I dust? should you dust? should she dust? should we dust? should you dust? should they dust?
V-ing form
should I be dusting? should you be dusting? should she be dusting? should we be dusting? should you be dusting? should they be dusting?
Perfect
should I have dusted? should you have dusted? should she have dusted? should we have dusted? should you have dusted? should they have dusted?
V-ing perfect
should I have been dusting? should you have been dusting? should she have been dusting? should we have been dusting? should you have been dusting? should they have been dusting?
Interro-negative form
Simple form
shouldn't I dust? shouldn't you dust? shouldn't she dust? shouldn't we dust? shouldn't you dust? shouldn't they dust?
V-ing form
shouldn't I be dusting? shouldn't you be dusting? shouldn't she be dusting? shouldn't we be dusting? shouldn't you be dusting? shouldn't they be dusting?
Perfect
shouldn't I have dusted? shouldn't you have dusted? shouldn't she have dusted? shouldn't we have dusted? shouldn't you have dusted? shouldn't they have dusted?
V-ing perfect
shouldn't I have been dusting? shouldn't you have been dusting? shouldn't she have been dusting? shouldn't we have been dusting? shouldn't you have been dusting? shouldn't they have been dusting?