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      In class and at home: modal verb 'debemos'

      Lesson details

      Learning outcome

      I can use modal verbs 'deber' and 'poder' to understand and write about what I and others must and can do in class and at home.

      Vocabulary and transcripts for this lessons

      Key learning points

      1. Rules about penultimate (syllable) stress tell us if we need to write an accent on the penultimate vowel.
      2. Applying knowledge about syllable stress helps to remember how to say words that we may have forgotten how to pronounce.
      3. 'Deber' is a modal verb meaning 'to have to, must'. It is conjugated as a regular -er verb; the 'we' form is 'debemos'.
      4. The verb deber is always followed by an infinitive, e.g. 'Siempre debemos decir la verdad.'

      Keywords

      • Penultimate (syllable) stress - pronouncing the second-last syllable more heavily than other syllables in a word

      • Modal verb - verb of necessity or possibility used with a 2nd verb in the infinitive, e.g. 'must', 'can', 'want'

      • Deber - modal verb that means 'to have to', 'must'

      Common misconception

      When there are two verbs together, e.g. 'I must go', we need to conjugate both.

      English confuses us here. We say 'I must go' rather than 'I must to go' as English uses an infinitive but without 'to'. In Spanish, after modal verbs 'deber', 'poder' and 'querer' the 2nd verb must always be an infinitive; 'I must go' is 'Debo ir'.

      Teacher tip

      The extended listening activity can be easily differentiated by: i) reducing or increasing the number of questions overall or ii) by removing the ‘story doesn’t say’ column. The audio can be paused to provide additional support.

      Licence

      This content is © Oak National Academy Limited (2026), licensed on Open Government Licence version 3.0
      except where otherwise stated. See Oak's terms & conditions
      (Collection 2).

      Lesson video

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      Prior knowledge starter quiz

      6 Questions

      Q1.
      Which word means 'perhaps'?

      ahora
      así
      Correct answer: quizás
      según
      sin

      Q2.
      Order the months of the year correctly.

      1 - enero
      2 - febrero
      3 - marzo
      4 - abril
      5 - mayo
      6 - junio
      7 - julio

      Q3.
      Match the Spanish and English.

      Correct Answer:contento,pleased

      pleased

      Correct Answer:igual,same

      same

      Correct Answer:limpio,clean

      clean

      Correct Answer:listo,ready, clever

      ready, clever

      Correct Answer:seguro,safe, sure, secure

      safe, sure, secure

      Correct Answer:sucio,dirty

      dirty

      Q4.
      Order the words to say: 'you go to the neighbourhood and he goes to Italy'.

      1 - vas
      2 - al
      3 - barrio
      4 - y
      5 - va
      6 - a
      7 - Italia

      Q5.
      Write in English: 'la gente puede hacer ejercicio'.

      Correct Answer: People can do exercise., The people can do exercise., People can exercise., The people can exercise.

      Q6.
      Write in Spanish: 'I can go to the beach'.

      Correct Answer: Puedo ir a la playa., Yo puedo ir a la playa.

      4 Questions

      Q1.
      Which words require an accent?

      tienen
      minuto
      Correct answer: azucar
      Correct answer: dificil
      Italia

      Q2.
      Which sentence means 'I must go'?

      debo voy
      deber voy
      Correct answer: debo ir
      deber ir

      Q3.
      Order the words to say: 'I must start the homework and she must finish the test'.

      1 - debo
      2 - empezar
      3 - los deberes
      4 - y
      5 - debe
      6 - terminar
      7 - la prueba

      Q4.
      Write in Spanish: 'we must see everything'.

      Correct Answer: Debemos ver todo., Nosotros debemos ver todo., Nosotras debemos ver todo.

      To help you plan your 8 Spanish lesson on: In class and at home: modal verb 'debemos', download all teaching resources for free and adapt to suit your pupils' needs...