Going to or Will

When we want to talk about future facts or things we believe to be true about the future, we use 'will'.

·         The President will serve for four years.

·         The boss won't be very happy.

·         I'm sure you'll like her.

·         I'm certain he'll do a good job.

If we are not so certain about the future, we use 'will' with expressions such as 'probably', 'possibly', 'I think', 'I hope'.

·         I hope you'll visit me in my home one day.

·         She'll probably be a great success.

·         I'll possibly come but I may not get back in time.

·         I think we'll get on well.

If you are making a future prediction based on evidence in the present situation, use 'going to'.

·         Not a cloud in the sky. It's going to be another warm day.

·         Look at the queue. We're not going to get in for hours.

·         The traffic is terrible. We're going to miss our flight.

·         Be careful! You're going to spill your coffee.

At the moment of making a decision, use 'will'. Once you have made the decision, talk about it using 'going to'.

·         I'll call Jenny to let her know. Sarah, I need Jenny's number. I'm going to call her about the meeting.

·         I'll come and have a drink with you but I must let Harry know. Harry, I'm going to have a drink with Simon.

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