1. present simple
1.1. schedules / timetables
1.2. 100% sure actions
1.3. examples:
1.3.1. Hurry the farry leaves in 10 minutes.
2. present continous
2.1. arrangements
2.1.1. previously made, (formal)
2.2. examples:
2.2.1. I’m speaking to the government committee tomorrow.
2.2.2. I’m going to [go] the theatre tomorrow.
2.2.3. We are having a meeting at 10 o ’clock.
3. going to
3.1. predictions
3.1.1. based on what we see
3.2. plans / intensions
3.3. examples:
3.3.1. I am going to be an astronaut.
3.3.2. Look! they are going to hit the tree!
4. to be (about) to
4.1. the action will happen in the immediate future
4.2. examples:
4.2.1. I am ([just] about) to get in touch with her
5. will
5.1. predictions
5.1.1. based on what we think
5.2. promises
5.3. instant decisions
5.4. examples:
5.4.1. We will be late.
5.4.2. We will have to take the train.
5.4.3. We will see you next week
6. future continous
6.1. in the future
6.2. at a certain time
6.3. examples:
6.3.1. In 5 years time everyone will be using HD phones.
6.3.2. We won’t be using printing mashines in 50 years.
6.3.3. Tomorrow at 10 o’clock, I will be reading my lovely book.
7. future perfect
7.1. started in the past/ present
7.1.1. and finishes in the future
7.2. examples:
7.2.1. The building will have been built BY next week.