Present tenses with a future meaning

When you are talking about what you have already arranged to do, use the present continuous. Do not use the simple present.

• A: What are you doing tomorrow evening? (not what do you do)
• B: I'm going to the theater. (not I go)
• A: Are you playing tennis tomorrow?
• B: Yes, but Tom isn't playing. He hurt his leg.
• A: Ann is coming tomorrow.
• B: Oh, is she? What time is she arriving?
• A: At 10:15.
• B: Are you meeting her at the station?
• A: I can't. I'm working tomorrow morning.

It is also possible to use going to (do) in these sentences.

• What are you going to do tomorrow evening?
• Tom is going to play tennis on Monday afternoon.

But the present continuous is usually more natural when you are talking about arrangements.

Do not use will to talk about what you have already arranged to do.

• What are you doing this evening? (not what will you do)
• Alex is getting married next month. (not Alex will get)

Simple present with a future meaning

We use the simple present when we are talking about timetables, schedules, etc. (for example, public transportation, movies).

• What time does the movie begin?
• The train leaves Boston at 7:25 a.m. and arrive in Washington, D.C., at 3:41 p.m.
• The football game starts at 2:00.
• Tomorrow is Wednesday.

But we do not usually use the simple present for personal arrangements.

• What time are you meeting Ann? (not do you meet)