Possible variations of conditional sentence type 1 Variations of the “main clause”.
Instead of if present + future may use it present + may / might / can.
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If the fog gets thicker, the plane may / might / be diverted.
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If your documents are in order, you may / can leave.
Instead of if + present + future we may use if + present + must / should / etc or any construction of command,
request, advice.
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If you want to lose the weight, you must / should / ought to eat less bread.
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If you want to lose the weight, eat less bread.
Instead of if + present + future we may use if + present + another present tense. If + two present tenses is
used to express authomatic or habitual results.
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If you heat ice, it turns to water.
Variations of the “if clause”.
Instead of it + present simple we can use if + present continious to indicate a present action or future
arrangement.
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If you are waiting for a bus, you had better join the queue.
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If you are staying for another night, I will ask the manager to give you a better room.
Instead of if + present simple we can use if + present prefect.
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If you have finished dinner, I will ask the waiter for the bill.
