Can Auxiliar

CAN

"Can" is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility.Examples:
• I can ride a horse. ability
• We can stay with my brother when we are in Paris. opportunity
• She cannot stay out after 10 PM. permission
• Can you hand me the stapler?request
• Any child can grow up to be president. possibility
AFIRMATIVE
✓ I can speak Chinese.
✓ I can help her now.
✓ I can drive Susan's car when she is out of town.
✓ I canplay the trumpet.
✓ We can take a taxi to the airport.

NEGATIVE


✓ I can't drive Susan's car when she is out of town.
✓ I couldn't speak Swahili.
✓ I cannot swim.
✓ Thatcannot be true.
✓ You can't tell me what to do.

QUESTION
✓ Can I have a glass of water? Yes, I can No, I can’t
✓ Can you give me a lift to school? Yes, I can No, I can’t
✓ CanPeter speak German? Yes, he can No, he can’t
✓ Can you help me with my homework? Yes, I can No, I can’t
✓ Can you play football? Yes, I can No, I can’t




COULD
"Could" is used toexpress possibility or past ability as well as to make suggestions and requests. "Could" is also commonly used in conditional sentences as the conditional form of "can."
Examples:
• Extreme raincould cause the river to flood the city. possibility
• Nancy could ski like a pro by the age of 11. past ability
• You could see a movie or go out to dinner. suggestion
• Could I use yourcomputer to email my boss? request
• We could go on the trip if I didn't have to work this weekend. conditional

AFIRMATIVE
✓ You could be wrong.
✓ They could manage without us.✓ I could help Ann if she only let me.
✓ This new plan could be very risky.
✓ The news could kill Mr. Taylor.

Negative
✓ I couldn't see very clearly.
✓ Mrs. Jones couldn't...