1. Stem-changers

2. To find the stem of a verb
Take off the last 2 letters
Hablar = habl

3. Some verbs have a stem-change.
That means there is a spelling change in all forms except nosotros and vosotros.

4. You already know some
Tener (e ie) tengo, tiene, tienes
Jugar (u ue) juego, juegas
Querer (e–> ie) quiero, quieres

5. There are 4 kinds of stem-changes
e ie
ei
o  ue
u ue

6. You’ll notice that only the STEM has a spelling change
You’ll notice that only the STEM has a spelling change. The endings are still the same and depend on the subject.
Yo quiero, quieres, quiere, queremos, quereís, quieren

7. How to conjugate a stem-changing verb:
Identify the letter that will change. (if there is more than one option, choose the 2nd)
Take that letter out and replace it with the letter(s) indicated on the chart.
Add the appropriate verb ending

8. Pedir (the e changes to i) Pid (this is the new stem)
Example
Pedir = ei
Pedir (the e changes to i)
Pid (this is the new stem)
Yo/pedir = yo pido

9. You’ll also notice that the NOSOTROS and VOSOTROS forms NEVER, EVER have a stem-change.