Modal Verbs – Can or Could, Modal verbs can, modal verbs could, english grammar;
CAN
| ABILITY (Present) |
I can speak five languages. |
| POSSIBILITY (Present) |
Alcohol can cause canser. |
| PERMISSION (Informal) |
Can I use your computer, please? |
| REQUEST (Informal) |
Can you hand me the pen? |
| OFFER (Help) |
If they like, I can carry some bags for you. |
COULD
| ABILITY (Past) |
He could play football well when he was a kid. |
| POSSIBILITY (Past) |
A lot of crime could be prevented. |
| PERMISSION (Polite) |
Could I please use your computer? |
| REQUEST (Polite) |
Could you tell me where the post office is, please? |
| SUGGESTION | If you want,we could go out for dinner after school? |
I want to learn english