I am not including a vosotros form here, due to the fact that my teacher doesn't use it.
For -ar Verbs
Hablar
Yo --- Hablé
Tú --- Hablaste
Usted/él/ella --- Habló
Nosotros --- Hablamos
*Note that Nosotros is the only form that doesn't change from a non-preterite verb!*
Ustedes/ellos/ellas --- Hablaron
For -er/-ir
Comer/Vivir
Yo --- Comí/Viví
Tú --- Comiste/Viviste
Usted/él/ella --- Comió/Vivió
Nosotros --- Comimos/Vivimos
*Note that Nosotros is the only form that doesn't change from a non-preterite verb!*
Ustedes/ellos/ellas --- Comieron/Vivieron
For the nosotros forms of the above words, you must use context to determine whether they are present or preterite tense.
---Vocabulary Break---
Acamper en las Montañas To camp in the mountains
Bajar un río en canoa To go down a river in a canoe
Cantar en el coro To sing in the chorus
Disfrutar con los amigos To enjoy time with friends
Estudiar las artes marciales To study marcial arts
jugar al ajedrez To play chess
(*Jugar is STEM CHANGING u to ue*)
Tomar un curso de natación To take a swimming class