Can, can’t: Ability, possibility, permission

Grammar / A1 Grammar lessons and exercises /Can, can’t: Ability, possibility, permission

✏️ Exercises

Can / Can’t – Grammar Guide

Grammar chart: Use of can and can't for ability, permission, and requests

Can / Can’t – Form

✅ Use: can + base verb (without 'to')

  • I can swim.
  • She can drive a car.
  • We can help you.

❌ Never: can + to + verb

  • I can to swim. ❌ (Incorrect)

✅ No -s for he/she/it

The verb can does NOT change for third person singular.

  • He can swim.
  • She can play the piano.
  • It can wait.

❌ Never: cans

  • He cans swim. ❌ (Incorrect)

✅ Questions: Start with Can

Can comes before the subject in questions.

  • Can you help me?
  • Can she come tomorrow?
  • Can they see us?

❌ Never: Do/Does + can

  • Do you can swim? ❌ (Incorrect)

✅ Negative: can’t (cannot)

  • I can’t come.
  • He can’t speak French.
  • We can’t go now.

❌ Never: don’t can / doesn’t can

  • I don’t can come. ❌ (Incorrect)

Use: Ability

Use can to talk about skills or things someone knows how to do.

  • My brother can cook very well.
  • I can’t swim.
  • Birds can fly.

Use: Permission & Possibility

Use can to ask for or give permission, or to say if something is possible.

  • Can I use your phone?
  • You can’t park here.
  • It can get very cold in winter.
  • I can’t come to the party.

Use: Requests

Use can to make requests or place orders.

  • Can you help me with this?
  • Can I have a coffee, please?
  • Can we get the bill?

Quick Tip:
can + base verb (no 'to')
No -s for he/she/it
Can starts questions
• Use can’t for negatives (not don’t can)
• Use for ability, permission, possibility, requests