To talk about ...........

We use .....

. Future personal arrangements / fixed plans

present continuous

. Something that will be completed by some future time

future perfect

. Predictions based on opinion (no evidence)

future simple (will ....)

. Prediction based on present evidence

going to

. Plans, decisions, firm intentions (informal)

going to

. Timetabled / scheduled events

simple present

. Spontaneous decisions

future simple (will ....)

. How long something will have continued for at a future time

future perfect continuous

. General information about the future

future simple (will ....)

. Something in progress at a certain future time

future continuous