Time Clauses in Conditionals — When, Before, After, Until
B1-B2 Level
English Exercises is teacher-led by Charlie. About the teacher · How content is made
Time clauses work similarly to first conditional if-clauses — both use present simple to talk about future events. The difference is meaning: "if" introduces uncertainty ("If she comes" — she might not come), while "when" implies expectation ("When she comes" — she is expected to come). "Before" and "after" show sequence: "Before you leave, close all the windows." "As soon as" emphasises immediacy: "As soon as I finish, I will call you." "Until" marks the end point: "I will wait until you arrive." Mastering these time conjunctions gives you more precise control over how you describe future plans, instructions, and conditions in both speaking and writing.
Quick Rule
Time conjunction + present simple (NOT will), main clause + will / going to / imperative
- 1.When the meeting finishes, I will send you the notes.
- 2.Before you go out, make sure you lock the door.
- 3.I will call you as soon as I get the results.
- 4.Until the rain stops, we won't go outside. (negative result clause with time clause)
- 5.After she graduates, she is going to travel for a year.
All 20 questions
Transform the sentence using the given time expression. Start with the given word(s). Remember: future time clauses use present tense.
I'll call you after I finish work.
When
She'll start the meeting when everyone arrives.
As soon as
I need to buy groceries before the shops close.
Before
We can't leave until the rain stops.
We'll
You should save your work before the computer crashes.
If
I'll feel better after I get some sleep.
I won't
The project will be delayed if we don't start immediately.
Unless
Once you sign the contract, you can't change your mind.
You can
I always check my email as soon as I wake up.
When
They'll announce the results after they count all the votes.
The results
You must submit the application before the deadline passes.
If
I'll text you when I arrive at the airport.
As soon as
We should leave before traffic gets heavy.
If
The match will be cancelled if it's still raining at 3pm.
Unless
She never makes decisions until she consults her team.
She always
You'll understand the process after you've done it a few times.
You won't
I'll have finished the report by the time you arrive.
When
The moment I get home, I'm going to bed.
I'm going
We can't start the presentation until all board members are present.
Once
They'll close the gates 30 minutes before the concert starts.
If
Continue Practising
Continue practising with these related exercises
Zero Conditional
EasyPractise general truths and scientific facts with if/when clauses
20 questions
Zero Conditional Error Correction
MediumFix zero conditional tense mistakes by editing only the wrong chunk
9 questions
First Conditional
EasyLearn to express real future possibilities and likely outcomes
20 questions
-ed vs -ing Adjectives
EasyPractise bored/boring, interested/interesting, and other feeling adjective pairs
60 questions
Present Perfect
MediumLearn to talk about experiences and unfinished time
240 questions
Reported Speech
MediumTransform direct speech into indirect speech
340 questions