• Degrees of Certainty (Modals)

• 
• Common modal verbs that show degrees of certainty are:

  -will (certain)

  -may (less certain)

  -might (not certain)

  
  

  will/may/might + base verb

  
  

  Bob may visit Sweden next year.
  

  Anne is absent today. She mightbe sick.

• Sarah will eat lasagna when she is in Italy.	He may not pass the English test.*
  Joe may travel overseas for work.	I might have to work late tonight.

• *Remember! Add not after a modal verb for a negative sentence.

  I will not be at work tomorrow.  I'm going on vacation.
• 
  

Source : Alison