Here's a breakdown of how I use each modal verb:
Possibility:
* Might: "It might rain tomorrow." (There's a chance it will rain.)
* Could: "They could be right." (It's possible they are right.)
* May: "You may find the answer in this book." (It's possible you'll find the answer.)
Ability:
* Can: "I can speak French." (I have the ability to speak French.)
* Could: "I could play the piano when I was younger." (I used to have the ability to play the piano.)
Obligation:
* Must: "You must follow the rules." (It's necessary to follow the rules.)
* Have to: "I have to go to work tomorrow." (I'm obligated to go to work.)
* Should: "You should study harder for the exam." (It's advisable to study harder.)
* Ought to: "You ought to be more respectful." (It's morally right to be respectful.)
Permission:
* Can: "Can I borrow your phone?" (Asking for permission)
* May: "You may leave early today." (Giving permission)
Request:
* Could: "Could you please pass the salt?" (Politely asking for something)
* Would: "Would you mind helping me with this?" (Making a polite request)
Note: Modal verbs are followed by the base form of the verb (e.g., "can go", "must see", "should study").
By using modal verbs in this way, I can express nuances of meaning and provide more contextually rich responses.