Answer: Modals are a sub-category of auxiliaries or helping verbs that express the speaker’s point of view on the mode of behavior of the doer of an action. The auxiliaries (shall, should, will, would, can, could, may, might, must, ought to, used to, need, and dare) that behave in the above- mentioned manner are called modals. They express attitudes such as ability, capacity, possibility, permission, advice, determination, etc.
Step-by-step explanation:
1. Animals cannot speak but they can communicate amongst themselves. (capacity, capability)
2. I could have attended school had I paid the school fees on time. (unfulfilled condition)
3. You may eat whatever you like[Permision]
4. The criminal might have escaped jail[Possibility]
5. I will stand up for my rights[Affirmative or determination]