Will and be going to

We use will to talk about facts in the future. I will be eighteen next Thursday. That plate is hot. If you touch it, you'll burn yourself. We use will for an instant decision or agreement to do something. What would you like to eat? I will have a pizza, please. We can use will for a prediction about the future. I think LA Lakers will win the game I’ll live in a big house when I’m older. Children will not go to school in the future.

We use be going to for an intention, something we have already decided to do. Tom is going to sell his car. I am going to watch the next program. Be going to means that we have already decided. I'm just going to make a quick phone call. Can you wait for me? We use be going to for a prediction when we see from the present situation what is going to happen in the future. There isn’t a cloud in the sky. It’s going to be a lovely day. My sister is going to have a baby in April. I feel terrible. I think I'm going to be sick.