Use can to describe an ability or ask someone for help or permission.

The idea

Put can before the base form of the main verb: She can ride. It stays can with every subject. For a negative, use cannot or the contraction can’t. For a question, put can before the subject: Can you open the window? A request with could may sound more polite in many contexts.

Examples

  • I can swim.
  • She can ride a bicycle.
  • We cannot meet today.
  • He can’t hear the announcement.
  • Can you open the window?
  • Can I use this chair?

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Watch out

Do not add -s to can or to the following verb: say She can ride, not She cans rides. Write the usual full negative as one word: cannot.

Try it yourself

  1. She can ___ a bicycle. (ride / rides)

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    ride

    ride stays in its base form after can.

  2. ___ you open the window? (Can / Does)

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    Can

    Can begins this request and comes before the subject.

  3. We ___ meet today. (cannot / does not)

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    cannot

    cannot is the standard single-word negative form of can.

Use it today

Write a sentence about something you can do, a sentence about something you cannot do today and a polite request for help.