I'd tow you'd tow he'd tow we'd tow you'd tow they'd tow
V-ing form
I'd be towing you'd be towing he'd be towing we'd be towing you'd be towing they'd be towing
Perfect
I should've towed you should've towed he should've towed we should've towed you should've towed they should've towed
V-ing perfect
I should've been towing you should've been towing he should've been towing we should've been towing you should've been towing they should've been towing
Negation
Simple form
I shouldn't tow you shouldn't tow he shouldn't tow we shouldn't tow you shouldn't tow they shouldn't tow
V-ing form
I shouldn't be towing you shouldn't be towing he shouldn't be towing we shouldn't be towing you shouldn't be towing they shouldn't be towing
Perfect
I shouldn't have towed you shouldn't have towed he shouldn't have towed we shouldn't have towed you shouldn't have towed they shouldn't have towed
V-ing perfect
I shouldn't have been towing you shouldn't have been towing he shouldn't have been towing we shouldn't have been towing you shouldn't have been towing they shouldn't have been towing
Interrogative form
Simple form
should I tow? should you tow? should he tow? should we tow? should you tow? should they tow?
V-ing form
should I be towing? should you be towing? should he be towing? should we be towing? should you be towing? should they be towing?
Perfect
should I have towed? should you have towed? should he have towed? should we have towed? should you have towed? should they have towed?
V-ing perfect
should I have been towing? should you have been towing? should he have been towing? should we have been towing? should you have been towing? should they have been towing?
Interro-negative form
Simple form
shouldn't I tow? shouldn't you tow? shouldn't he tow? shouldn't we tow? shouldn't you tow? shouldn't they tow?
V-ing form
shouldn't I be towing? shouldn't you be towing? shouldn't he be towing? shouldn't we be towing? shouldn't you be towing? shouldn't they be towing?
Perfect
shouldn't I have towed? shouldn't you have towed? shouldn't he have towed? shouldn't we have towed? shouldn't you have towed? shouldn't they have towed?
V-ing perfect
shouldn't I have been towing? shouldn't you have been towing? shouldn't he have been towing? shouldn't we have been towing? shouldn't you have been towing? shouldn't they have been towing?