Power Point on Modals Students will be able to identify the meaning of the word modals . Will be able to use modals accurately to change the meaning of the sentence. A modal verb is a type of auxiliary verb that is usually used with another verb to express ideas such as possibility, necessity, and permission They give additional information about the function of the main verb that follows it. The negative forms of modal verbs are often contracted. Negatives are formed by adding ‘not’ after the modal verbs.