I'd be concentrating you'd be concentrating he'd be concentrating we'd be concentrating you'd be concentrating they'd be concentrating
Perfect
I would've concentrated you would've concentrated he would've concentrated we would've concentrated you would've concentrated they would've concentrated
V-ing perfect
I would've been concentrating you would've been concentrating he would've been concentrating we would've been concentrating you would've been concentrating they would've been concentrating
Negation
Simple form
I wouldn't concentrate you wouldn't concentrate he wouldn't concentrate we wouldn't concentrate you wouldn't concentrate they wouldn't concentrate
V-ing form
I wouldn't be concentrating you wouldn't be concentrating he wouldn't be concentrating we wouldn't be concentrating you wouldn't be concentrating they wouldn't be concentrating
Perfect
I wouldn't have concentrated you wouldn't have concentrated he wouldn't have concentrated we wouldn't have concentrated you wouldn't have concentrated they wouldn't have concentrated
V-ing perfect
I wouldn't have been concentrating you wouldn't have been concentrating he wouldn't have been concentrating we wouldn't have been concentrating you wouldn't have been concentrating they wouldn't have been concentrating
Interrogative form
Simple form
would I concentrate? would you concentrate? would he concentrate? would we concentrate? would you concentrate? would they concentrate?
V-ing form
would I be concentrating? would you be concentrating? would he be concentrating? would we be concentrating? would you be concentrating? would they be concentrating?
Perfect
would I have concentrated? would you have concentrated? would he have concentrated? would we have concentrated? would you have concentrated? would they have concentrated?
V-ing perfect
would I have been concentrating? would you have been concentrating? would he have been concentrating? would we have been concentrating? would you have been concentrating? would they have been concentrating?
Interro-negative form
Simple form
wouldn't I concentrate? wouldn't you concentrate? wouldn't he concentrate? wouldn't we concentrate? wouldn't you concentrate? wouldn't they concentrate?
V-ing form
wouldn't I be concentrating? wouldn't you be concentrating? wouldn't he be concentrating? wouldn't we be concentrating? wouldn't you be concentrating? wouldn't they be concentrating?
Perfect
wouldn't I have concentrated? wouldn't you have concentrated? wouldn't he have concentrated? wouldn't we have concentrated? wouldn't you have concentrated? wouldn't they have concentrated?
V-ing perfect
wouldn't I have been concentrating? wouldn't you have been concentrating? wouldn't he have been concentrating? wouldn't we have been concentrating? wouldn't you have been concentrating? wouldn't they have been concentrating?