Future Simple use

Future Simple Tense is used in the following situations:

1. When we talk about a situation or activity which will happen in the future.

The concert will start at 5 p.m.
One day you will understand everything.
We will go by tram.

2. Future Simple Tense is used when we make a decision at the time of speaking.

I will switch off the radio.
I will go and bring some more bread for supper.

3. When we predict that something will happen.

I think he will arrive next week.