Modal Verbs CAN and COULD in English, Difference between can and could in english
| Can | Could |
| Offer | Suggestion |
| Can I be of any help? | We could write a letter to the president. |
| Permission | Permission |
| You can put over there. | Could I ask you a personal question? |
| Ability | Ability |
| I can drive a car. | When I was a child, I could spoke Germany. |
| Possibility | Possibility |
| She can be really sad. | He could be the one who stole the money. |
| Request | Request |
| Can you be quiet? | Could I borrow your pencil, please? |
