Preterite of Ser, Ir, Dar, and Hacer

These four verbs are among the most frequently used in Spanish, and they have some of the most unusual preterite forms. The biggest surprise? Ser and ir have identical conjugations in the preterite. Let us work through each one.

Ser (to be) and Ir (to go) — Identical Preterite Forms

This is one of the most remarkable features of Spanish: the verbs ser (to be) and ir (to go) are completely identical in the preterite tense. Context always makes the meaning clear.

Person	Conjugation	Ser meaning	Ir meaning
yo	fui	I was	I went
tú	fuiste	you were	you went
él / ella / usted	fue	he/she was	he/she went
nosotros / nosotras	fuimos	we were	we went
vosotros / vosotras	fuisteis	you all were	you all went
ellos / ellas / ustedes	fueron	they were	they went

Key insight: There are no accent marks on any of these forms. The forms do not follow any regular pattern — they must be memorised.

How to Tell Ser and Ir Apart

Since the forms are identical, you must rely on context to determine the meaning:

Ir (to go) — usually followed by a + place

Fui a la tienda. — I went to the shop.
Fuimos a la playa. — We went to the beach.
¿Fuiste a la fiesta? — Did you go to the party?
Fueron a México de vacaciones. — They went to Mexico on holiday.

Ser (to be) — usually describes identity, characteristics, or events

Fue una noche maravillosa. — It was a wonderful night.
Fuimos los primeros en llegar. — We were the first to arrive.
¿Quién fue el presidente? — Who was the president?
La reunión fue a las tres. — The meeting was at three (event time).

Rule of thumb: If you see fui/fue/fueron followed by a + a place, it almost certainly means "went." If it describes a quality, identity, or event, it means "was/were."

Practice: Ser or Ir?

Read each sentence and decide whether the preterite form is from ser or ir:

Sentence	Answer
Fui al supermercado.	Ir — I went to the supermarket.
Fue un día increíble.	Ser — It was an incredible day.
Fuimos a cenar a un restaurante.	Ir — We went to have dinner at a restaurant.
Fueron muy amables con nosotros.	Ser — They were very kind to us.
¿Fuiste tú quien llamó?	Ser — Was it you who called?
¿Fuiste a la biblioteca?	Ir — Did you go to the library?
La fiesta fue genial.	Ser — The party was great.
Los niños fueron al parque.	Ir — The children went to the park.

Dar (to give)

The verb dar is unique because it is an -AR verb that takes -ER/-IR preterite endings (without accent marks):

Person	Conjugation	Translation
yo	di	I gave
tú	diste	you gave
él / ella / usted	dio	he/she gave
nosotros / nosotras	dimos	we gave
vosotros / vosotras	disteis	you all gave
ellos / ellas / ustedes	dieron	they gave

Note: There are no accent marks on any form of dar in the preterite. The forms are monosyllabic (di, dio) or follow the standard pattern. Some older texts show dió with an accent, but modern RAE rules omit it.

Dar — Practice Sentences

Le di un regalo a mi hermana. — I gave my sister a gift.
¿Te dieron la información? — Did they give you the information?
Nos dimos cuenta del error. — We realised the mistake. (darse cuenta = to realise)
El profesor nos dio mucha tarea. — The teacher gave us a lot of homework.
Me diste un susto. — You gave me a fright.

Preterite of Ser/Ir/Dar/Hacer