Present — what is happening now, and what happens habitually
| yo | ocurroI happen | nosotros | ocurrimoswe happen |
| tú | ocurresyou happen | vosotros | ocurrísyou all happen |
| él/ella/Ud. | ocurrehe/she happens | ellos/Uds. | ocurrenthey happen |
Present perfect — have —ed; a past still touching now. Spain: today, this week. Latin America: mostly the indefinido instead
| yo | he ocurridoI have happened | nosotros | hemos ocurridowe have happened |
| tú | has ocurridoyou have happened | vosotros | habéis ocurridoyou all have happened |
| él/ella/Ud. | ha ocurridohe/she has happened | ellos/Uds. | han ocurridothey have happened |
Present subjunctive — after que with wishes, doubt, emotion, ojalá
| yo | ocurra(that) I happen | nosotros | ocurramos(that) we happen |
| tú | ocurras(that) you happen | vosotros | ocurráis(that) you all happen |
| él/ella/Ud. | ocurra(that) he/she happens | ellos/Uds. | ocurran(that) they happen |
Present perfect subjunctive — have —ed, under doubt or emotion: no creo que haya venido
| yo | haya ocurrido(that) I have happened | nosotros | hayamos ocurrido(that) we have happened |
| tú | hayas ocurrido(that) you have happened | vosotros | hayáis ocurrido(that) you all have happened |
| él/ella/Ud. | haya ocurrido(that) he/she has happened | ellos/Uds. | hayan ocurrido(that) they have happened |
Preterite — a finished past action — it started, it ended
| yo | ocurríI happened | nosotros | ocurrimoswe happened |
| tú | ocurristeyou happened | vosotros | ocurristeisyou all happened |
| él/ella/Ud. | ocurrióhe/she happened | ellos/Uds. | ocurrieronthey happened |
Imperfect — used to / was —ing; background, habits, descriptions
| yo | ocurríaI used to happen | nosotros | ocurríamoswe used to happen |
| tú | ocurríasyou used to happen | vosotros | ocurríaisyou all used to happen |
| él/ella/Ud. | ocurríahe/she used to happen | ellos/Uds. | ocurríanthey used to happen |
Past perfect — had —ed; further back than another past event
| yo | había ocurridoI had happened | nosotros | habíamos ocurridowe had happened |
| tú | habías ocurridoyou had happened | vosotros | habíais ocurridoyou all had happened |
| él/ella/Ud. | había ocurridohe/she had happened | ellos/Uds. | habían ocurridothey had happened |
Imperfect subjunctive — si clauses and past-tense wishes: si tuviera, quería que fuera
| yo | ocurriera(that) I happened | nosotros | ocurriéramos(that) we happened |
| tú | ocurrieras(that) you happened | vosotros | ocurrierais(that) you all happened |
| él/ella/Ud. | ocurriera(that) he/she happened | ellos/Uds. | ocurrieran(that) they happened |
Imperfect subjunctive — the same tense, second form; commoner in Spain and in writing
| yo | ocurriese(that) I happened | nosotros | ocurriésemos(that) we happened |
| tú | ocurrieses(that) you happened | vosotros | ocurrieseis(that) you all happened |
| él/ella/Ud. | ocurriese(that) he/she happened | ellos/Uds. | ocurriesen(that) they happened |
Past perfect subjunctive — had —ed, hypothetically: si hubiera sabido
| yo | hubiera ocurrido(that) I had happened | nosotros | hubiéramos ocurrido(that) we had happened |
| tú | hubieras ocurrido(that) you had happened | vosotros | hubierais ocurrido(that) you all had happened |
| él/ella/Ud. | hubiera ocurrido(that) he/she had happened | ellos/Uds. | hubieran ocurrido(that) they had happened |
Preterite perfect — had —ed, immediately before; literary, all but extinct
| yo | hube ocurridoI had happened | nosotros | hubimos ocurridowe had happened |
| tú | hubiste ocurridoyou had happened | vosotros | hubisteis ocurridoyou all had happened |
| él/ella/Ud. | hubo ocurridohe/she had happened | ellos/Uds. | hubieron ocurridothey had happened |
Future — will — (spoken Spanish often prefers voy a + infinitivo)
| yo | ocurriréI will happen | nosotros | ocurriremoswe will happen |
| tú | ocurrirásyou will happen | vosotros | ocurriréisyou all will happen |
| él/ella/Ud. | ocurriráhe/she will happen | ellos/Uds. | ocurriránthey will happen |
Conditional — would —; also softens a request into politeness
| yo | ocurriríaI would happen | nosotros | ocurriríamoswe would happen |
| tú | ocurriríasyou would happen | vosotros | ocurriríaisyou all would happen |
| él/ella/Ud. | ocurriríahe/she would happen | ellos/Uds. | ocurriríanthey would happen |
Future perfect — will have —ed; done by some future point
| yo | habré ocurridoI will have happened | nosotros | habremos ocurridowe will have happened |
| tú | habrás ocurridoyou will have happened | vosotros | habréis ocurridoyou all will have happened |
| él/ella/Ud. | habrá ocurridohe/she will have happened | ellos/Uds. | habrán ocurridothey will have happened |
Conditional perfect — would have —ed; the road not taken
| yo | habría ocurridoI would have happened | nosotros | habríamos ocurridowe would have happened |
| tú | habrías ocurridoyou would have happened | vosotros | habríais ocurridoyou all would have happened |
| él/ella/Ud. | habría ocurridohe/she would have happened | ellos/Uds. | habrían ocurridothey would have happened |
Future subjunctive — legal and proverbial only: adonde fueres, haz lo que vieres
| yo | ocurriere(should) I happen | nosotros | ocurriéremos(should) we happen |
| tú | ocurrieres(should) you happen | vosotros | ocurriereis(should) you all happen |
| él/ella/Ud. | ocurriere(should) he/she happen | ellos/Uds. | ocurrieren(should) they happen |
Imperative (do it) — orders and requests; there is no yo form
| yo | — | nosotros | ocurramoslet's happen |
| tú | ocurrehappen! | vosotros | ocurridhappen! |
| él/ella/Ud. | ocurrahappen! | ellos/Uds. | ocurranhappen! |
Imperative (don't) — no + subjunctive — never the affirmative form with no in front
| yo | — | nosotros | no ocurramoslet's not happen |
| tú | no ocurrasdon't happen | vosotros | no ocurráisdon't happen |
| él/ella/Ud. | no ocurradon't happen | ellos/Uds. | no ocurrandon't happen |

I — the speaker
| Presente | ocurroI happen |
| Perfecto | he ocurridoI have happened |
| Subj. presente | ocurra(that) I happen |
| Subj. perfecto | haya ocurrido(that) I have happened |
| Futuro | ocurriréI will happen |
| Condicional | ocurriríaI would happen |
| Fut. perfecto | habré ocurridoI will have happened |
| Cond. perfecto | habría ocurridoI would have happened |
| Subj. futuro | ocurriere(should) I happen |
| Indefinido | ocurríI happened |
| Imperfecto | ocurríaI used to happen |
| Pluscuamp. | había ocurridoI had happened |
| Subj. imperf. | ocurriera(that) I happened |
| Subj. -se | ocurriese(that) I happened |
| Subj. pluscuamp. | hubiera ocurrido(that) I had happened |
| Pret. anterior | hube ocurridoI had happened |
| Imperativo | — |
| Imper. negativo | — |
we — the speaker plus others
| Presente | ocurrimoswe happen |
| Perfecto | hemos ocurridowe have happened |
| Subj. presente | ocurramos(that) we happen |
| Subj. perfecto | hayamos ocurrido(that) we have happened |
| Futuro | ocurriremoswe will happen |
| Condicional | ocurriríamoswe would happen |
| Fut. perfecto | habremos ocurridowe will have happened |
| Cond. perfecto | habríamos ocurridowe would have happened |
| Subj. futuro | ocurriéremos(should) we happen |
| Indefinido | ocurrimoswe happened |
| Imperfecto | ocurríamoswe used to happen |
| Pluscuamp. | habíamos ocurridowe had happened |
| Subj. imperf. | ocurriéramos(that) we happened |
| Subj. -se | ocurriésemos(that) we happened |
| Subj. pluscuamp. | hubiéramos ocurrido(that) we had happened |
| Pret. anterior | hubimos ocurridowe had happened |
| Imperativo | ocurramoslet's happen |
| Imper. negativo | no ocurramoslet's not happen |
you (informal) — one person you are familiar with
| Presente | ocurresyou happen |
| Perfecto | has ocurridoyou have happened |
| Subj. presente | ocurras(that) you happen |
| Subj. perfecto | hayas ocurrido(that) you have happened |
| Futuro | ocurrirásyou will happen |
| Condicional | ocurriríasyou would happen |
| Fut. perfecto | habrás ocurridoyou will have happened |
| Cond. perfecto | habrías ocurridoyou would have happened |
| Subj. futuro | ocurrieres(should) you happen |
| Indefinido | ocurristeyou happened |
| Imperfecto | ocurríasyou used to happen |
| Pluscuamp. | habías ocurridoyou had happened |
| Subj. imperf. | ocurrieras(that) you happened |
| Subj. -se | ocurrieses(that) you happened |
| Subj. pluscuamp. | hubieras ocurrido(that) you had happened |
| Pret. anterior | hubiste ocurridoyou had happened |
| Imperativo | ocurrehappen! |
| Imper. negativo | no ocurrasdon't happen |
you all — informal plural, Spain only
| Presente | ocurrísyou all happen |
| Perfecto | habéis ocurridoyou all have happened |
| Subj. presente | ocurráis(that) you all happen |
| Subj. perfecto | hayáis ocurrido(that) you all have happened |
| Futuro | ocurriréisyou all will happen |
| Condicional | ocurriríaisyou all would happen |
| Fut. perfecto | habréis ocurridoyou all will have happened |
| Cond. perfecto | habríais ocurridoyou all would have happened |
| Subj. futuro | ocurriereis(should) you all happen |
| Indefinido | ocurristeisyou all happened |
| Imperfecto | ocurríaisyou all used to happen |
| Pluscuamp. | habíais ocurridoyou all had happened |
| Subj. imperf. | ocurrierais(that) you all happened |
| Subj. -se | ocurrieseis(that) you all happened |
| Subj. pluscuamp. | hubierais ocurrido(that) you all had happened |
| Pret. anterior | hubisteis ocurridoyou all had happened |
| Imperativo | ocurridhappen! |
| Imper. negativo | no ocurráisdon't happen |
he, she, you (formal) — one other person — formal you shares it
| Presente | ocurrehe/she happens |
| Perfecto | ha ocurridohe/she has happened |
| Subj. presente | ocurra(that) he/she happens |
| Subj. perfecto | haya ocurrido(that) he/she has happened |
| Futuro | ocurriráhe/she will happen |
| Condicional | ocurriríahe/she would happen |
| Fut. perfecto | habrá ocurridohe/she will have happened |
| Cond. perfecto | habría ocurridohe/she would have happened |
| Subj. futuro | ocurriere(should) he/she happen |
| Indefinido | ocurrióhe/she happened |
| Imperfecto | ocurríahe/she used to happen |
| Pluscuamp. | había ocurridohe/she had happened |
| Subj. imperf. | ocurriera(that) he/she happened |
| Subj. -se | ocurriese(that) he/she happened |
| Subj. pluscuamp. | hubiera ocurrido(that) he/she had happened |
| Pret. anterior | hubo ocurridohe/she had happened |
| Imperativo | ocurrahappen! |
| Imper. negativo | no ocurradon't happen |
they, you all — several others — plural you shares it
| Presente | ocurrenthey happen |
| Perfecto | han ocurridothey have happened |
| Subj. presente | ocurran(that) they happen |
| Subj. perfecto | hayan ocurrido(that) they have happened |
| Futuro | ocurriránthey will happen |
| Condicional | ocurriríanthey would happen |
| Fut. perfecto | habrán ocurridothey will have happened |
| Cond. perfecto | habrían ocurridothey would have happened |
| Subj. futuro | ocurrieren(should) they happen |
| Indefinido | ocurrieronthey happened |
| Imperfecto | ocurríanthey used to happen |
| Pluscuamp. | habían ocurridothey had happened |
| Subj. imperf. | ocurrieran(that) they happened |
| Subj. -se | ocurriesen(that) they happened |
| Subj. pluscuamp. | hubieran ocurrido(that) they had happened |
| Pret. anterior | hubieron ocurridothey had happened |
| Imperativo | ocurranhappen! |
| Imper. negativo | no ocurrandon't happen |
