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Unit 5.1 · A2 Grammar

Can, can't, could, couldn't

Use can and can't for present ability or possibility; Use could and couldn't for past ability or possibility; Use the base verb after can or could, and put the modal before the subject in questions.

Teacher mode — correct answers are highlighted. Students never see this.
  1. 1. Mina is a good cook. She _____ make delicious soup.

    Multiple Choice20s
    Acan✓
    Bcan't
    Ccould
    Dcouldn't

    💡 Can expresses a present ability.

  2. 2. The sentence 'Leo can plays the guitar' is correct.

    True / False20s
    True
    False ✓

    💡 After can, use the base form of the verb without -s.

  3. 3. When I was three, I _____ read, so my parents read stories to me.

    Fill the Gap20s
    Accepted
    couldn't · could not

    💡 Couldn't expresses a lack of ability in the past.

  4. 4. _____ your sister use this computer now?

    Multiple Choice20s
    ACan✓
    BDoes can
    CCould to
    DIs can

    💡 A present question with can begins with Can + subject + base verb.

  5. 5. Match each sentence beginning to its only logical ending.

    Matching30s
    I can send→photos from my phone today.
    At age four, Ben could count→to one hundred.
    The locked door means we can't go→into the room.
    Before her lessons, Ana couldn't swim→across the pool.

    💡 Can and can't refer to the present; could and couldn't refer to past ability or possibility.

  6. 6. This bus goes to the airport, so you _____ take it.

    Fill the Gap20s
    Accepted
    can

    💡 Can shows that taking this bus is possible.

  7. 7. Put the words in order to make a past ability question.

    Put in Order30s
    1. 1.Could
    2. 2.Nora
    3. 3.speak
    4. 4.English
    5. 5.when she was six?

    💡 The question order is Could + subject + base verb.

  8. 8. Can your friends come to the picnic? - Yes, _____.

    Multiple Choice20s
    Athey can✓
    Bthey do
    Cthey could
    Dthey are

    💡 A positive short answer repeats can after the subject.

  9. 9. 'We couldn't find the hotel last night' describes a past problem.

    True / False20s
    True ✓
    False

    💡 Couldn't can describe something that was not possible in the past.

  10. 10. My grandfather _____ run very fast when he was young.

    Fill the Gap20s
    Accepted
    could

    💡 Could expresses an ability in the past.

  11. 11. The cafe is closed today, so we _____ have lunch there.

    Multiple Choice20s
    Acan't✓
    Bcan
    Ccould
    Dare not

    💡 Can't shows that something is not possible now.

  12. 12. Match each form to its meaning.

    Matching30s
    can→present ability
    can't→no present possibility
    could→past ability
    couldn't→no past possibility

    💡 The positive and negative modal forms show ability or possibility in present and past time.

  13. 13. Ella can _____ very well. (dance)

    Fill the Gap20s
    Accepted
    dance

    💡 Use the infinitive without to after can.

  14. 14. We use do or does before can to make a question.

    True / False20s
    True
    False ✓

    💡 Can is a modal verb, so it does not need do or does.

  15. 15. In 1900, people _____ watch television at home because it did not exist.

    Multiple Choice20s
    Acouldn't✓
    Bcan't
    Ccould
    Dcan

    💡 Couldn't shows that something was impossible in the past.

  16. 16. Put the words in order to make a present negative sentence.

    Put in Order30s
    1. 1.Sam
    2. 2.can't
    3. 3.carry
    4. 4.heavy boxes
    5. 5.today.

    💡 Use subject + can't + base verb in a negative sentence.

  17. 17. I _____ hear you because the music is too loud.

    Fill the Gap20s
    Accepted
    can't · cannot

    💡 Can't describes a present lack of ability caused by the loud music.

  18. 18. Could Amir ride a bike at age five? - No, _____.

    Multiple Choice20s
    Ahe couldn't✓
    Bhe can't
    Che didn't
    Dhe wasn't

    💡 A negative short answer to a could question uses couldn't.

  19. 19. Can has the same form with I, she, and they.

    True / False20s
    True ✓
    False

    💡 Modal verbs do not add -s for the third person singular.

  20. 20. The lift was broken, so we _____ use it yesterday.

    Fill the Gap20s
    Accepted
    couldn't · could not

    💡 Couldn't expresses past impossibility.