Imagine trying to speak without expressing possibility, permission,or necessity; it would be like painting without colour. That’s were the modal verb step in. These special helping verbs—can, could, ...

These are useful verbs that are always followed by an infinitive. They are usually used in the present, imperfect, past tense with a past participle or in the conditional tense.

Modal verbs are verbs that indicate likelihood, ability, permission or obligation. Modal verbs change the intention or meaning of the main verb in a sentence by showing whether an action is: Learn ...