• Use may, might, and could to talk about future possibility.
  •  
  • Use may not and might not to express the possibility that something will not happen.
  •  
  • Use couldn’t to say that something is impossible.

 

Don’t use may, might or could  for questions about possibility. Instead use will,

be going to or present progressive.

 

Subject          +        Modal               +          Verb         +        Complement

 I                            May (not)                        go                 to London, this Summer.

 You                        Might (not)

 They                      Could (not)

 

      

REMEMBER                             Modal         +      Verb   (base form) 

                                                 

                                It           might                    rain                        later.

 

WARNING!

Maybe is not a modal. It is an adverb. It is always one word and it comes at

 the beginning of the sentence.

                 

They may have a problem at the office.