Modal Verbs : Meaning
 Modal Verbs are a type of auxiliary verb that expresses ability, possibility, permission or obligation.
Modal Verbs : Examples
Ability : Can, Could (I can read. I could teach)
Permission : Can, May. (Can I read? May I open a window?)
Possibility : Could, May, Might, Will
Obligation : Should, Could, Must.
Modal Verbs : Ways to Teach
Give students a list of Modal Verbs and ask them to group. Clarify the difference between these verbs.