There are different ways how to express future.
 
1. The present continuous.
 
We use this tense when we say about arranged actions, we have already planned them.
 
Use am/is/ are + Ving
 
We are having a party next week.
  
Shutterstock_1323618038_birthday party_dzimšanas dienas ballīte.jpg
 
2. The present simple.
 
We use this tense when we say about programmes, timetables, trains, buses, matches.
 
Use V1 or Vs(es) for the 3rd person (singular)- positive

Do/does not V1-negative
 
Do/Does+ subject+ V1 - question
 
The train arrives at 5.30.
  
Shutterstock_172581671_high speed train_ātrais vilciens.jpg
 
3. The structure to be going to.

-We use for plans, intentions, ambitions we have for the future.

I am going to employ more staff.
  
Shutterstock_2451184521_teamwork in office_grupas darbs ofisā.jpg
Рис. \(4\). Staff

-We use in predictions when there is evidence that something will happen in the near future.
 
Look at him! He is going to win the race.
  
 
Remember!
 
We use will+ V1 when we make a prediction based on what we think, believe.

In the year 2050 there will be colonies on Mars.
 

We use to be going to when we make a prediction based on what we can see and know.

Look! This person is going to steal money.