English verb conjugation
TO CONCENTRATE

Regular verb: concentrate - concentrated - concentrated

Indicative

Present	Present continuous	Preterite	Preterite continuous
don't I concentrate? don't you concentrate? doesn't he concentrate? don't we concentrate? don't you concentrate? don't they concentrate?	am I not concentrating? aren't you concentrating? isn't he concentrating? aren't we concentrating? aren't you concentrating? aren't they concentrating?	didn't I concentrate? didn't you concentrate? didn't he concentrate? didn't we concentrate? didn't you concentrate? didn't they concentrate?	wasn't I concentrating? weren't you concentrating? wasn't he concentrating? weren't we concentrating? weren't you concentrating? weren't they concentrating?
Present perfect	Present perfect continuous	Pluperfect	Pluperfect continuous
haven't I concentrated? haven't you concentrated? hasn't he concentrated? haven't we concentrated? haven't you concentrated? haven't they concentrated?	haven't I been concentrating? haven't you been concentrating? hasn't he been concentrating? haven't we been concentrating? haven't you been concentrating? haven't they been concentrating?	hadn't I concentrated? hadn't you concentrated? hadn't he concentrated? hadn't we concentrated? hadn't you concentrated? hadn't they concentrated?	hadn't I been concentrating? hadn't you been concentrating? hadn't he been concentrating? hadn't we been concentrating? hadn't you been concentrating? hadn't they been concentrating?
Future	Future continuous	Future perfect	Future perfect continuous
won't I concentrate? won't you concentrate? won't he concentrate? won't we concentrate? won't you concentrate? won't they concentrate?	won't I be concentrating? won't you be concentrating? won't he be concentrating? won't we be concentrating? won't you be concentrating? won't they be concentrating?	won't I have concentrated? won't you have concentrated? won't he have concentrated? won't we have concentrated? won't you have concentrated? won't they have concentrated?	won't I have been concentrating? won't you have been concentrating? won't he have been concentrating? won't we have been concentrating? won't you have been concentrating? won't they have been concentrating?

Conditional

Present	Present continuous	Past	Past continuous
wouldn't I concentrate? wouldn't you concentrate? wouldn't he concentrate? wouldn't we concentrate? wouldn't you concentrate? wouldn't they concentrate?	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?	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?	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?

Infinitive

Imperative

Infinitive		Imperative
to concentrate		- - -

Participle

Present	Past
concentrating	concentrated