1. TO BE (como ejemplo de verbo irregular)/ TO STUDY (como ejemplo de verbo regular)
TIEMPOS SIMPLES/ SIMPLE TENSES
AFFIRMATIVE NEGATIVE QUESTION
TO BE TO STUDY TO BE TO STUDY TO BE TO STUDY
S+don't+ v v+s do/does+s´v?
I am I was I study I studied I am not I wasn't I don't study I didn't study Am I? Was I ? Do I study? Did I study?
soy fui/ estudio estudié/ no soy/estoy no fui/ no estudio no estudié/ ¿Soy? ¿fuí? Estudio? estudié?
estoy estuve/ estudiaba estuve/ estudiaba ¿Estoy? ¿Estaba?
estaba estaba ¿Estuve?
You are you were You study you studied you aren't You weren't You don't study you didn't study Are you? Do you study? Did you study?
eres fuiste/ estudias estudiaste/ no eres/estás no fuiste/ no estudias no estudiaste/ ¿Eres? Were you? Estudias? Estudiaste?
estás estuviste/ estudiabas estuviste/ estudiabas ¿Estás? ¿Eras?
estabas estabas ¿Estabas?
¿Estuviste?
He is
es he was He/she/it study he studied he/she/ isn't he wasn't She doesn't study he didn't study Does she/ study? Did he study?
está fue/ estudia estudia/ no es/está no fué/ no estudia no estudió/ Is he/it? Estudia? Estudió?
estuvo/ estudiaba estuvo/ estudiaba ¿Es? Was he?
estaba estaba ¿está? ¿Era?
¿Estaba?
¿Estuviste?
PRESE PASADO PRESENTE PASADO PRESENTE PASADO PRESENTE PASADO PRESEN PASADO PRESENTE PASADO
NTE TE

2. TIEMPOS PERFECTOS/ PERFECT TIMES
(NORMALMENTE USADOS CON: FOR, SINCE, YET, ALREADY, JUST, EVER, NEVER)
TO HAVE + V-PARTICIPLE
AFFIRMATIVE NEGATIVE QUESTION
TO BE TO STUDY TO BE TO STUDY TO BE TO STUDY
I have been I have studied I haven't been I haven't studied Have I been? Have I studied?
he sido/ he estudiado no he sido/ no he estudiado ¿He sido yo? ¿he estudiado?
he estado I have never been Have I ever been?
nunca/no he estado ¿He estado yo?
You have been You have studied you haven't been You haven't Have you been? Have you studied?
has sido/ has estudiado no has sido studied ¿Has sido tú? ¿has estudiado?
has estado you have never been no has estudiado Have you ever been
nunca/no has estado ¿has estado?
He has been He/she/ has studied he/she hasn't been Has he/she been?
ha sido/ ha estudiado no ha sido She/ hasn't Ha sido él/ella? Has he/ she
ha estado he has never been studied Has he ever been? studied?
nunca/no ha estado no ha estudiado ¿Ha estado? ¿Ha estudiado?
PRESENTE PAS PRESENTE PASA PRESENTE PAS PRESENTE PASA PRESENTE PA PRESENTE PASA
ADO DO ADO DO SA DO
DO

3. TIEMPOS CONTÍNUOS/ CONTINUOUS TIMES
(EN PASADO SUELE USARSE CON WHEN, WHILE)
TO BE + V-ING
AFFIRMATIVE NEGATIVE QUESTION
TO STUDY TO STUDY TO STUDY
I am studying I was studying I am not studying I wasn't studying Am I studying? Was I studying?
estoy estudiando estaba estudiando no estoy estudiando no estaba estudiando ¿Estoy estudiando? ¿Estaba estudiando?
You are studying you were studying You aren't studying You weren't studying Are you studying? Were you studying?
estás estudiando estabas estudiando No estás estudiando no estabas estudiando ¿estás estudiando? ¿Estabas estudiando?
He/she/it is studying he was studying He/ she isn't studying She/he wasn't studying Is he/she studying? Was he/she studying?
está estudiando estaba estudiando No está estudiando no estaba estudiando ¿Está estudiando? ¿Estaba estudiando?
PRESENTE PASADO PRESENTE PASADO PRESENTE PASADO