Chapter 9 Grammar

• What are the stem changing verbs' stems in the preterite? Why are they irregular?


  estar -> estuv-

  poder -> pud-

  poner -> pus-

  querer -> quis-

  saber -> sup-

  tener -> tuv-

  venir -> vin

  ALL accents are DROPPED
• What is the stems for Decir and Traer? Which one is irregular and why?


  -dij- (-eron is irregular due to i being dropped)

  -traj (-eron is irregular due to i being dropped)
• What is the past tense of hay? (there/is)

  Hubo (there was/were)
• What verbs have stem changes in the past tense? What do they change to? What forms do they change?


  -er/-ir verbs

  -e changes to i (pedir -> pidieron)

  -i changes to u (dormir -> durmieron)

  -ONLY changes usted/ustedes/ellos(as) forms)
• What two verbs are outliers to the -er/-ir past tense stem change rule?


  sonreír and reírse

  (they add an i before the e instead of replacing it)