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? 	amI 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