Lesson: Modal Verbs of Possibility: “Must,” “Can't,” and “Might” English

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In this lesson, you will learn to use the modal verbs of possibility “must,” “can't,” and “might” to talk about mysteries.

Lesson Plan

Students will be able to

understand how to use the modal verbs must, might, and can’t to make deductions about the present or the past,
use the modal verb can’t to express certainty that something is not possible or was not possible,
use the modal verb might to express uncertainty about something in the past or the present,
use the modal verb must to express certainty about something in the past or the present,
understand the difference between the uses of the modal verbs might, must, and can’t to express varying degrees of certainty,
understand that can’t is the negative form of must as a modal verb of possibility.