Reflexives, Preterite + Imperfect, Subjunctive + Indicative, Preterite Irregular, Indirect + Direct, Ser + Estar

Reflexive pronouns

me, te, se, nos, os, se

Present tense endings for -AR verbs

o, as, a, amos, áis, an

Present tense endings for -ER verbs

o, es, e, emos, éis, en

Present tense endings for -IR verbs

o, es, e, imos, ís, en

Preterite endings (-AR verbs)

é, aste, ó, amos, asteis, aron

Preterite endings (-ER/-IR verbs)

í, iste, ió, imos, isteis, ieron

Imperfect endings (-AR verbs)

aba, abas, aba, ábamos, abais, aban

Imperfect endings (-ER/-IR verbs)

ía, ías, ía, íamos, íais, ían

Present Subjunctive Endings (-AR verbs)

e, es, e, emos, éis, en

Present Subjunctive Endings (-ER/-IR verbs)

a, as, a, amos, áis, an

Preterite Irregular Stems (Cucaracha Song)

tuv-, estuv-, anduv-, pus-, pud-, sup-, quis-, vin-, dij-, traj-, conduj-

Endings for preterite irregulars

e, iste, o, imos, isteis, ieron (eron for 'j' verbs)

Direct Object Pronouns

lo, la, los, las

Indirect Object Pronouns

me, te, le, nos, os, les

Subjunctive triggers

Ojalá que, Es mejor que, Quiero que, Espero que, Dudo que

When to use ser

Description, Occupation, Characteristics, Time, Origin, Relationships (DOCTOR)

When to use estar

Position, Location, Action, Condition, Emotion (PLACE)

SIMBA = when to use preterite

Single action, Interruption, Main event, Beginning/end, Arrival/departure

CHEATED = when to use imperfect

Characteristics, Health, Emotion, Age, Time, Endless actions, Date