Pattern for Spanish Stem Changing Verbs

This post was on my old blog, but now I’m moving it over here.

I did some thinking and I found a pattern for stem-changing spanish verbs. It’s sort of complicated so be sure you understand a few things. Keep in mind that the letter a and the letter i cannot be a stem-changing vowel.

You need to know soft and hard consonants (in Spanish).

Hard consonants in Spanish: b, c (when like a k), d, g, gu, k, n, qu, t, v

Soft consonants in Spanish: c (when like an s), f, g (when like an h), j, m, p, s, z

The other consonants are neither. Now that you know these, we can get to the pattern.

  • Stem changer vowels are always the second vowel space from the right.
  • If that second vowel from the right is to the right of a soft consonant, it changes. Examples: jugar, poder, tener
  • If that vowel is to the right of a hard consonant, and that consonant is to the right of a vowel, then it changes. Example: divertir, acostar
  • If there is an o after a hard-sounding c, and before 2 consonants in a row, it changes. Examples: costar, acostar
  • It always changes if it is after a v or a qu. If it doesn’t, it’s an irregular verb. Examples: venir, vestir, volver, querer

Thank you for reading. I hope this helped.


About EmperorTigerstar

I make a YouTube account that makes map animations of historical events such as World War II or the Civil War.
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2 Responses to Pattern for Spanish Stem Changing Verbs

  1. Pingback: Hard and short or soft and long. – slimegreen

  2. Fantastic post however , I was wondering if you could write a litte more on this topic?
    I’d be very grateful if you could elaborate a little bit
    further. Bless you!

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