(be + going to + inf)
Going to
Intention
We use the special going to construction when we have the intention to do something before we speak. We have already made a decision before speaking. Look at these examples:- I have won $1,000. I am going to buy a new TV.
- We’re not going to see my mother tomorrow.
- When are you going to go on holiday?
Prediction
We often use going to to make a prediction about the future. Our prediction is based on evidence. We are saying what seems sure to happen. Here are some examples:- The sky is very black. It is going to snow.
- It’s 8.30! You’re going to miss the train!
- I crashed the company car. My boss isn’t going to be very happy!
Try some games to practise “be going to+inf” to express future plans or predictions.
I’m sure you ARE GOING TO like them!
(From www.englishclub.com