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