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