4.236 saying how likely something is

You can use 'have to' or 'have got to' instead of 'must' to indicate that you think something is the case, because of particular facts or circumstances.

• 'That looks about right.' --- 'It has to be.'
• Money has got to be the reason.

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

• The children are going to be fishermen or farmers.
• Life is going to be a bit easier from now on.

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You can use 'be bound to' to say emphatically that something is certain to happen in the future.

• Marion's bound to be back soon.
• It was bound to happen sooner or later.
• They'd be bound to know if it was all right.