4.133 certainty: 'will'

You use 'will' to say that something is certain to happen or be the case in the future.

• They will see everything.
• The price of food will go up.
• The service will have been running for a year in May.

'Be going to' can also be used to say that something is certain to happen in the future. This use of 'be going to' is dealt with in paragraph 4.237.