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While the regular future tense simply adds endings to the full infinitive, there are 12 common verbs that use an irregular stem in the future tense. The good news: they all use the same endings as regular verbs (-é, -ás, -á, -emos, -éis, -án). Only the stem changes.
These verbs modify their infinitive before adding the future endings:
| Infinitive | Meaning | Irregular Stem | Type of Change |
|---|---|---|---|
| tener | to have | tendr- | e → drops, d inserted |
| venir | to come | vendr- | e → drops, d inserted |
| poner | to put | pondr- | e → drops, d inserted |
| salir | to go out | saldr- | i → drops, d inserted |
| valer | to be worth | valdr- | e → drops, d inserted |
| poder | to be able | podr- | e → drops |
| saber | to know | sabr- | e → drops |
| haber | to have (aux.) | habr- | e → drops |
| caber | to fit | cabr- | e → drops |
| querer | to want | querr- | e → drops, r doubled |
| decir | to say/tell | dir- | ec → drops |
| hacer | to do/make | har- | ce → drops |
Tip: You can group these into three categories to make memorisation easier: the -dr- group (5 verbs), the drop-vowel group (5 verbs), and the shortened group (2 verbs).
These verbs replace the final vowel of the infinitive with -dr-:
| Subject | Conjugation | English |
|---|---|---|
| yo | tendré | I will have |
| tú | tendrás | you will have |
| él/ella/Ud. | tendrá | he/she will have |
| nosotros/as | tendremos | we will have |
| vosotros/as | tendréis | you all will have |
| ellos/ellas/Uds. | tendrán | they will have |
| Subject | Conjugation | English |
|---|---|---|
| yo | vendré | I will come |
| tú | vendrás | you will come |
| él/ella/Ud. | vendrá | he/she will come |
| nosotros/as | vendremos | we will come |
| vosotros/as | vendréis | you all will come |
| ellos/ellas/Uds. | vendrán | they will come |
| Subject | Conjugation | English |
|---|---|---|
| yo | pondré | I will put |
| tú | pondrás | you will put |
| él/ella/Ud. | pondrá | he/she will put |
| nosotros/as | pondremos | we will put |
| vosotros/as | pondréis | you all will put |
| ellos/ellas/Uds. | pondrán | they will put |
| Subject | Conjugation | English |
|---|---|---|
| yo | saldré | I will go out |
| tú | saldrás | you will go out |
| él/ella/Ud. | saldrá | he/she will go out |
| nosotros/as | saldremos | we will go out |
| vosotros/as | saldréis | you all will go out |
| ellos/ellas/Uds. | saldrán | they will go out |
| Subject | Conjugation | English |
|---|---|---|
| yo | valdré | I will be worth |
| tú | valdrás | you will be worth |
| él/ella/Ud. | valdrá | it will be worth |
| nosotros/as | valdremos | we will be worth |
| vosotros/as | valdréis | you all will be worth |
| ellos/ellas/Uds. | valdrán | they will be worth |
These verbs simply drop the final vowel of the infinitive:
| Subject | Conjugation | English |
|---|---|---|
| yo | podré | I will be able |
| tú | podrás | you will be able |
| él/ella/Ud. | podrá | he/she will be able |
| nosotros/as | podremos | we will be able |
| vosotros/as | podréis | you all will be able |
| ellos/ellas/Uds. | podrán | they will be able |
| Subject | Conjugation | English |
|---|---|---|
| yo | sabré | I will know |
| tú | sabrás | you will know |
| él/ella/Ud. | sabrá | he/she will know |
| nosotros/as | sabremos | we will know |
| vosotros/as | sabréis | you all will know |
| ellos/ellas/Uds. | sabrán | they will know |
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