MIGHT

Express possibility =>  "es posible que"

might + infinitive                         might go / might be / might rain , etc.                                

I / WE / THEY / YOU                    might (not)                     be, go , 

HE  / SHE  / IT                                                                    play, come

I might ..........=it is possible that I will...

• Imight go to tha cinema this evening 
• A: When is Barbara go to the phone you?                                                                                       B: I don´t know .She might phone this afternoon?
• Take an umbrella with you , It might rain
• Buy a lottery ticket .You might be lucky
• Are you going out tonight ? I might

STUDY THE DIFFERENCE:

• I´m playing tenis tomorrow (sure)                                                                                                    I might play tenis tomorrow (possible)
• Barbara is going to phone later (sure)                                                                                              Barbara might phone later (possible)

THE NEGATIVE IS MIGHT NOT:

• I might not go to work tomorrow. (=it is possibe that I will not go)
• Sue might not come to the party.(=it is possible that she ´ll not come)