Modal verbs in English grammar are a specific category of auxiliary verbs that modify or change the meaning of the main verb in a sentence to express various nuances of necessity, ability, permission, possibility, or obligation. Common modal verbs include can, could, may, might, shall, should, will, would, must, and ought to.

These verbs are unique because they do not change their form regardless of the subject in the sentence. They are always followed by a base form of a verb (infinitive without “to”). Modal verbs can significantly impact the structure and meaning of a sentence, often conveying subtle differences in interpretation and tone.

In terms of their functions compared to regular verbs, modal verbs do not have different forms to indicate tense. Instead, they rely on other verbs in the sentence to convey time and aspect. Additionally, modal verbs exhibit a greater degree of inflexibility compared to regular verbs, especially in terms of their conjugation and usage.

Understanding how to use modal verbs correctly is essential for effective communication in English, as they play a crucial role in expressing nuances of attitude, intention, and necessity. Mastery of modal verbs can enhance the clarity and precision of one’s speech and writing, making communication more nuanced and sophisticated.

Make sure to practice using modal verbs in various contexts to become comfortable and proficient in their application.