Regular verb: concentrate - concentrated - concentrated
Present | Present continuous | Preterite | Preterite continuous |
do I concentrate? do you concentrate? does she concentrate? do we concentrate? do you concentrate? do they concentrate? | am I concentrating? are you concentrating? is she concentrating? are we concentrating? are you concentrating? are they concentrating? | did I concentrate? did you concentrate? did she concentrate? did we concentrate? did you concentrate? did they concentrate? | was I concentrating? were you concentrating? was she concentrating? were we concentrating? were you concentrating? were they concentrating? |
Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous |
have I concentrated? have you concentrated? has she concentrated? have we concentrated? have you concentrated? have they concentrated? | have I been concentrating? have you been concentrating? has she been concentrating? have we been concentrating? have you been concentrating? have they been concentrating? | had I concentrated? had you concentrated? had she concentrated? had we concentrated? had you concentrated? had they concentrated? | had I been concentrating? had you been concentrating? had she been concentrating? had we been concentrating? had you been concentrating? had they been concentrating? |
Future | Future continuous | Future perfect | Future perfect continuous |
will I concentrate? will you concentrate? will she concentrate? will we concentrate? will you concentrate? will they concentrate? | will I be concentrating? will you be concentrating? will she be concentrating? will we be concentrating? will you be concentrating? will they be concentrating? | will I have concentrated? will you have concentrated? will she have concentrated? will we have concentrated? will you have concentrated? will they have concentrated? | will I have been concentrating? will you have been concentrating? will she have been concentrating? will we have been concentrating? will you have been concentrating? will they have been concentrating? |
Present | Present continuous | Past | Past continuous |
would I concentrate? would you concentrate? would she concentrate? would we concentrate? would you concentrate? would they concentrate? | would I be concentrating? would you be concentrating? would she be concentrating? would we be concentrating? would you be concentrating? would they be concentrating? | would I have concentrated? would you have concentrated? would she have concentrated? would we have concentrated? would you have concentrated? would they have concentrated? | would I have been concentrating? would you have been concentrating? would she have been concentrating? would we have been concentrating? would you have been concentrating? would they have been concentrating? |
Infinitive | Imperative |
Infinitive | Imperative | ||
to concentrate | - - - |
Present | Past | ||
concentrating | concentrated |