If, When, Unless

If, When, Unless

Hello English learners! Welcome to a new grammar lesson. We will discuss the conjunctions ‘if’, ‘when’, and ‘unless’.

IF

We use if to say that something will happen or is true only if something else happens or is true.

• If I see Michael, I’ll tell him to call you back.
• We would like to go for a picnic if the weather is nice.
• You’ll get wet if you don’t get in.

When

We use when to say at which time something happens.

• When are you setting off?
• I saw Mary when I was in the city.
• I found some old letters when cleaning the attic.

If, When, Unless

When to use if and when?

We use ‘if’ for something that may happen and ‘when’ for something that will certainly occur.

• If he comes, let me know. (He may come)
• When he comes, let me know. (He will come)
• If I find out what time the film begins, I’ll tell you. (He may find out)
• When I find out what time the film begins, I’ll tell you. (He will find out)

We also use if to talk about something imaginary.

• If I were rich, I would stop working.
• If you worked harder, you would have enough money to buy a car.
• If Mary had his number, she would call him.

If, When, Unless

Unless

Unless is a conjunction which means “except if” or something is possible to happen only in a particular situation.

• Unless you leave now, you’ll be late.
• I’d like to go to the cinema unless you have a better suggestion.
• The doctor won’t be able to help you unless you tell him what’s wrong.

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Unless and if

Unless means “if not”.

• They won’t let you in unless you have a ticket. (if you don’t have a ticket)
• It’s difficult t get a good job unless you have a degree and experience. (if you don’t have it)
• They will cut off your electricity unless you pay the bill.

Use unless to talk about exceptions.

• You shouldn’t try to fix that computer by yourself unless you know how to do it. 
• Please don’t bother me unless it’s something really serious.
• We never go out for Christmas unless we’re in a warm country.

If you really want to learn English but don’t know how to do it and where to start, don’t hesitate to contact us. Book an online English lesson with one of our certified and experienced English teachers and take a test and consultation! Tap the banner to learn more!