Download these verb to be PPT lessons and use it in class today. These ESL PowerPoint presentations are for lessons about the verb to be. ‘To be’ is an irregular verb. As such, its form is very different from other verbs in English. The verb ‘to be’ appears very often in English so it is important for students to learn the different forms of this ‘be verb’. The PowerPoint lessons below include the present tense of the verb to be ( am, are, is ) and the past simple form of the verb to be ( was, were ).