Stemchanging verbs

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Stem-changing verbs

• those tricky little boot verbs

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So, whats a stem-changing verb?

• A stem-changing verb is a type of verb that
  changes its stem, along with its ending whenever
  it is conjugated.
• (Hence the name stem-changing verb)

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Do I have to learn a whole new conjugation
pattern?

• Well, Yes and No. See, when conjugating a stem
  changing verb, the endings that you learned for
  regular present tense -ar, -er, and -ir verbs
  still apply.
• BUT
• You now have second pattern to learnand that is
  the pattern of how when the stem changes.

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Lets take the verb jugar

• Jugar is a stem-changing verb.
• Notice that when I conjugate jugar for first
  person singular yo, I get juego.
• Just like any other regular present tense -ar
  verb conjugated for yo. Juego ends in -o.
• But, notice what happened to the stem?

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What happened?

• When jugar was conjugated the u changed into a
  ue.
• Interestingthe stemchanged.
• J u g J u e g

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So, why is it called a boot verb?

• Imagine a conjugation chart for the stem changing
  verb Jugar. Notice Anything?

Every conjugation inside the boot shape has a
stem change, those outside the boot shape simply
follow the normal conjugation pattern.
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Hmmm.

• Q So does that mean that all stem changes are
  from u ? ue?
• A Forget about it! There are different types
  of stem-changes that occur.
• Pedir e ? i Servir e ? i
• Tener e ? ie Doler o ? ue
• Venir e ? ie Poder o ? ue
• Preferir e ? ie Dormir o ? ue

Do you notice any patterns?
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More information?

• For more information on stem-changing verbs,
  check out the verbs section in the back of your
  textbook -Specifically pg. 343

El fin