How to use can and could in english, example sentences;
Modals CAN,Using Can and Example Sentences
Ability
- I can speak three languages
- She can play the piano.
Offer
- Can I help you?
- I can send this letter for you.
Possibility
- Smoking can cause cancer.
- It can get very hot there these days.
Request
- Can you hand me the pencil?
- Can I go to the park?
Permission
- Can I borrow your notebook?
- Can I speak to Mary?
Modals COULD,Using Could and Example Sentences
Ability
- I could play a guitar when I was a child
- I could smell something burning.
Suggestion
- I could help you with Spanish.
- They could go to the movies if you are interested.
Possibility
- A lof of crime could be prevented.
- You could have called first.
Request
- Could you hand me the pencil?
- Could I go to the park?
Permission
- Could I borrow your notebook?
- Could I speak to Mary?