Modal verbs are auxiliary verbs that add information about the likelihood, ability, permission

Modal verbs are auxiliary verbs that add information about the likelihood, ability, permission, or obligation of the main verb. Common modal verbs include can, could, may, might, must, shall, should, will, and would. They are used to express a range of meanings, such as possibility, ability, permission, and necessity.  Key characteristics of modal verbs: They are auxiliary verbs: Modal verbs are used alongside a main verb to modify its meaning.  They don't conjugate: Modal verbs don't change form based on the subject (e.g., "I can," "he can," "they can").  They are followed by the base form of the verb: The main verb after a modal verb is in its infinitive form without "to" (e.g., "I can swim," not "I can to swim").  Examples of modal verbs and their uses: Ability: Can and could (e.g., "I can speak French," "I could swim when I was younger").  Possibility: May, might, could, can (e.g., "It may rain later," "He might be at home," "That could be true," "She can be quite forgetful").  Permission: May, can, could (e.g., " May I borrow your pen?", " Can I go to the bathroom?", " Could you please be quiet?").  Obligation/Necessity: Must, should, have to (e.g., "You must finish your homework," "You should see a doctor," "I have to go to work tomorrow").  Suggestion/Advice: Should, ought to (e.g., "You should try the new restaurant," "You ought to apologize").  Polite requests: Could, would (e.g., " Could you please pass the salt?", " Would you mind helping me?").  Offers: Shall, will (e.g., " Shall I help you with your bags?", " Will you have some tea?").  Predictions: Will, would (e.g., "The train will be here soon," "I would guess that he's coming