The document discusses the usage of the modal verb "can" and its conjugations. It explains that "can" is used to talk about possibility, prohibition, ability, permission, and offers/requests. Examples are provided to illustrate how "can" is conjugated in the affirmative, negative, and interrogative forms for different subjects. It remains the same form across subjects unlike other verbs.

1. can /can’t

3. AFFIRMATIVE Form : I You He She Can swim It We You They

4. NEGATIVE Form : I You He She Can’t swim It We They

5. INTERROGATIVE Form : I You He CAN She swim ? It We You They

6. Short answers : I You He She Can + Yes, It We They

7. Short answers : I You He She Can’t - No , It We They

8. Can / Can’t * We use 'can' to talk about 'possibility‘ / ‘prohibition’. Can you do that? You can’t smoke here. *We use 'can' to talk about ‘ability'. I can speak French / I can speak Italian I can drive / I can’t dance ballet *We use 'can' to ask for and give permission . Can I go to the bathroom? / Yes, you can. You can use my phone./ You can’t use my phone * We use 'can‘ in offers and requests Can you give me a hand? / Can you help me?