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Grade 10 · lesson 4 of 4

Contrast Querer and Poder Patterns

Querer and poder have frequent present stem changes: quiero and puedo, with corresponding tú and third-person forms.

About 20 minutes, plus any extended practice

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Supplied materials

  • Paper or a browser scratch area; no audio recording, account or private information is needed.
  • Present-time supplied sentence: “yo ___ estudiar” (study). Use querer (want) and choose the missing verb for that subject. Candidate answers: (A) queremos (B) quiere (C) quieres (D) quiero.
  • Present-time supplied sentence: “tú ___ estudiar” (study). Use poder (can/be able) and choose the missing verb for that subject. Candidate answers: (A) podemos (B) puede (C) puedes (D) puedo.

Learn the idea

Common verbs have forms that cannot all be produced from a regular ending rule. Learn supplied paradigms in meaningful contexts, then check subject agreement rather than treating every changed stem as an error. Querer and poder have frequent present stem changes: quiero and puedo, with corresponding tú and third-person forms. Nosotros uses queremos and podemos without those vowel changes. A following action verb remains an infinitive.

First identify whether the supplied meaning is want or can. Match its paradigm to the subject, then retain estudiar as the second infinitive. Do not apply the vowel change to every form or conjugate both verbs for the same subject.

Stem changes are verb-specific and tense-specific. The present patterns here do not predict all past forms. Quiero estudiar and puedo estudiar state different intentions/abilities, so grammar alone cannot replace the supplied meaning.

  1. Copy the supplied example and underline its speaker, noun, time cue or evidence words.
  2. Apply the shown language rule; keep any required ending, accent or paired punctuation.
  3. Solve the changed independent check, then explain why one offered alternative fails.
  4. Complete all three new practice cases and use the model to correct the precise word or meaning.
Worked example

See the method in action

Supplied case: Present-time supplied sentence: “yo ___ estudiar” (study). Use querer (want) and choose the missing verb for that subject. Candidate answers: (A) queremos (B) quiere (C) quieres (D) quiero. Solution: querer pairs yo with quiero. The following estudiar stays an infinitive. Querer changes e to ie and poder o to ue in the selected singular/third-plural forms, while nosotros retains queremos/podemos. Final result: quiero. Stem changes are verb-specific and tense-specific. The present patterns here do not predict all past forms. Quiero estudiar and puedo estudiar state different intentions/abilities, so grammar alone cannot replace the supplied meaning.

Your turn

Check your reasoning

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Helpful tips
  • First identify whether the supplied meaning is want or can.
  • Stem changes are verb-specific and tense-specific.
Present-time supplied sentence: “tú ___ estudiar” (study). Use poder (can/be able) and choose the missing verb for that subject.

Feedback appears here after you check. This is practice, not a graded school assessment.

See the answer and explanation

puedes

poder pairs tú with puedes. The following estudiar stays an infinitive. Querer changes e to ie and poder o to ue in the selected singular/third-plural forms, while nosotros retains queremos/podemos.

Take it further

Present-time supplied sentence: “yo ___ estudiar” (study). Use poder (can/be able) and choose the missing verb for that subject. Candidate answers: (A) podemos (B) puede (C) puedes (D) puedo. Expected result: puedo. poder pairs yo with puedo. The following estudiar stays an infinitive. Querer changes e to ie and poder o to ue in the selected singular/third-plural forms, while nosotros retains queremos/podemos.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.

More practice: try new cases

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

More practice: try new cases
1. Present-time supplied sentence: “ella ___ estudiar” (study). Use querer (want) and choose the missing verb for that subject.
Need a hint?
  • First identify whether the supplied meaning is want or can.
  • Stem changes are verb-specific and tense-specific.
2. Present-time supplied sentence: “nosotros ___ estudiar” (study). Use poder (can/be able) and choose the missing verb for that subject.
Need a hint?
  • First identify whether the supplied meaning is want or can.
  • Stem changes are verb-specific and tense-specific.
3. Present-time supplied sentence: “ustedes ___ estudiar” (study). Use querer (want) and choose the missing verb for that subject.
Need a hint?
  • First identify whether the supplied meaning is want or can.
  • Stem changes are verb-specific and tense-specific.

Your choices are temporary. Feedback appears after you check all the answers.

Nothing here is saved to an account or sent to a teacher. Keep your own notes or download them before leaving. The score describes these questions; it does not certify subject mastery.

Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.