First conditional and future time clauses + when, until, etc.

 

We use first conditional sentences to talk about a possible/ probable future situation and its consequence.

 

Present (NOT the future)

 

·       We use it after "if" in first conditional sentences. NOT if you’ll work hard, you’ll pass your exam.

 

If you work hard, you’ll pass your exams

The teacher won’t be very pleased if we’re late for class.

 

·       We use it after "when, as soon as, until, before and after" to talk about the future.

 

We’ll have dinner when your father gets home.

As soon as you get your exam results, call me.

I won’t go to bed until you come home.

I’ll have a quick lunch before I leave.

After I finish university, I’ll probably take a year off and travel.

  

Imperative

·        We can also use an imperative instead of the will clause.

 

Come and see us next week if you have time.

 

Unless+ present simple

 

·       We can use it in positive sentences instead of if …. Not in conditional sentences. Compare: Allison won’t get into university if she doesn’t get good grades.

 

Allison won’t get into university unless she gets good grades.

I won’t go unless you go too.

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