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