III. DESCRIPTIVE/INTERPRETIVE FUNCTION OF MODALS: DESCRIPTIONS FROM THE SPEAKER'S POINT OF VIEW (OPINION)

3. Introduction to Modals of Probability (Predictions or Certainty)

3.1 Form: Simple Modals

Modals used to express degrees of certainty as demonstrated above include the simple modals will, going to, might, and could. Negative forms are will not (won't), not going to, and might not. There is no negative form of 'could' for expressing different levels of certainty.

We use the same form as we do for most modals of social function.

modal + base form of the verb