Present Simple: fixed events on a timetable or a calendar
eg. The conference starts at 9am on Monday.
Present Continuous: future arrangements
eg. I’m playing tennis with Anna on Saturday afternoon.
Be going to: personal plan or intention/ prediction based on present evidence
eg. I’m going to give up smoking.
Look at those clouds. It’s going to rain.
Will: prediction based on personal opinion
eg. I think she’ll move to Brighton.
Future Continuous: something that will be in progress at a time in the future/ something unplanned that will happen in the normal course of events
eg. This time tomorrow we’ll be lying on a beach in Spain!
I’ll be walking past the shops on my way home, so I can get it for you.
Future Perfect: something that will be completed before a certain time in the future
eg. By the end of this month we will have spent $5000 on equipment.