Will vs. Going to – Plans and Spontaneous Decisions

We use will to talk about decisions made in the moment we speak.

A: Do you have plans for this evening? B: No, I guess I’ll go the cinema.

Click on this link to see: How to Form Will

We use going to when we have the intention to do something before we speak. We have already made a decision before speaking.

A: Do you have plans for this evening? B: Yes, I’m going to the cinema.

Click on this link to see: How to Form Going to