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