Expressing the Future

Present Simple Present Continuous
1. In sentences that concern events that are on a definite schedule or timetable. These sentences usually contain future words. Only a few verbs are used in this way, eg: to be, open, close, begin, start, end, finish, arrive, come, leave, return.
  • The train LEAVES Detroit at 9pm tonight.
  • John STARTS work next week.
  • Tomorrow IS Thursday.

1. In sentences that concern a definite plan or arrangement. These sentences usually contain future words, or the future is understood from the context.
  • Mary IS TAKING her music exam next year.
  • They can’t play tennis with you tomorrow. They’RE WORKING.
  • We’RE GOING to the theatre on Friday.
Be Going To Will
1. When the speaker is making a prediction based on evidence.
  • There’s a cloud in the sky. It’S GOING TO rain.
  • He's going too fast. He'S GOING TO crash!

2. When the speaker already has an intention or plan.

  • We’RE GOING TO paint our bedroom tomorrow.
  • Jo has won the lottery. He says he’S GOING TO go to Tahiti.
1. When the speaker is making a prediction.
  • Tomorrow WILL BE hot and sunny.
  • People WILL GO to Mars in the next decade.

2. When the speaker decides to do something at the time of speaking. He had no previous plan. Spontaneous.

  • Hold on. I’LL GET a pen.
  • Maybe we’LL STAY IN and WATCH television.