Future

WILL

-Prediction, speculation
   There will be a woman president in the 2020
-Espontaneous decision
-doubts

(Never, still, ever, just, only)

aff.- will+infinitive
neg.-won't+infinitive
int.-will+subj+infinitive...?

BE GOING TO

-Intentions, plans
   Scientists have calculated that people are going to live for 1,200 years
-Predictions from the evidence
   She is going to start the treatment tomorrow.

(Never, ever, still, just, only)

PRESENT CONTINUOUS

-Arrangements
   I'm visiting dublin in August.

(last/next week)

FUTURE CONTINUOUS

-Actions in the future that have already been planed
   In just a few days, she will be looking and feeling 30 years old again.

FUTURE PERFECT SIMPLE

-Actions completed by specific time in the future
   By the end of the decade, this news will be have transformed society.