Use of the going to-future

When do we use the going to-future?

The going to-future is one future tense. There are other future tenses, e.g. will-future, Present Progressive, Future Progressive/Continuous and Simple Present.

We use the going to-future:

1. planned actions in the future

We are going to sing at the party.
They are going to fly to South Africa.

2. You are certain that sth. is going to happen in the future (logical consequence).

Look at that car! It is going to crash into the yellow one.