Unit 5: The colleague from hell
Zero and first conditionals
Select a unit
- 1 Pop-ups
- 2 Hidden talents
- 3 Can't buy me love
- 4 Travellers' tales
- 5 The colleague from hell
- 6 Jurassic mystery: unpacking the past
- 7 Career changes
- 8 Art
- 9 Project management
- 10 The dog ate my homework!
- 11 The diary of a double agent
- 12 Fashion forward
- 13 Flat pack skyscrapers
- 14 Extreme sports
- 15 Food fads
- 16 Me, my selfie and I
- 17 Endangered animals
- 18 A nip and a tuck: cosmetic surgery
- 19 I'm really sorry...
- 20 Telling stories
- 21 Fakes and phrasals
- 22 Looking to the future
- 23 Becoming familiar with things
- 24 From rags to riches
- 25 Against the odds
- 26 Our future on Mars?
- 27 Where is it illegal to get a fish drunk?
- 28 Dodgy dating
- 29 Annoying advice
- 30 I'll have been studying English for thirty weeks
Session 2
Have you ever wondered how to talk about facts and truths in English? What about discussing the possible results of your actions? In this session we look at the zero and first conditionals - how we form them and what they mean. If you do these activities, you will improve your grammar!
Activity 1
If you practise...
... you'll get better!
If you practise, you'll get better... I'm sure you agree with that statement. But is it the zero or first conditional? That's the grammar we're looking at in this session.
Let's start by comparing the two, then we'll do a test to see how well you know the form.
If / when + result
Conditional sentences have two parts: the if or when part and the result (main) part.
- When she eats too much cake, she feels bad. (zero conditional)
- I'll take my swimsuit if we go to the beach. (first conditional)
Read the text and complete the activity

Zero conditional
We use this to talk about things that are always true, whether they are scientific fact or personal beliefs. Both parts are in the present simple.
The zero conditional uses if / when + present simple, and present simple:
Positive
- If I drink milk, I get a stomachache.
- When you take exercise, your heart beats faster.
Negative
- I feel upset when he doesn't answer my calls.
- If you mix white and yellow, you don't get orange.
Question
- What comes out of a volcano when it erupts?
First conditional
We use this to talk about things which might happen if an action takes place. We use if for things which are likely to happen and when for things which are certain to happen.
It uses if / when + present simple, and will + infinitive (without 'to'):
Positive
- I'll do the cooking this evening if it's OK with you.
- When they finish work, they'll go home.
Negative
- I won't wait for you, if you're late again.
- When we go camping, we won't take our laptops.
Question
- Where will he live when he moves to the city?
Note: The if / when part can also come second in zero and first conditional sentences.
- I get a stomachache if I drink milk.
- They'll go home when they finish work.
To do
That's a brief introduction to the form. So do you think you can spot sentences which are grammatically correct and wrong? Find out in our test!
That's not a conditional...
9 Questions
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
This sentence starts with 'when' and both parts are in the present simpleHelp
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Can you have 'will' in the 'if' part of a conditional sentence?Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
It's a negative sentence, and both parts are in the present continuous. Is that OK for zero or first conditionals?Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
The pattern of this sentence is if + present simple + will + infinitive (without 'to')Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
The pattern of this sentence is present simple + if + present continuousHelp
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Remember: 'won't' is the short form of 'will not'. So this sentence has the pattern will not + infinitive (without 'to') + if + present simpleHelp
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Both parts of this sentence are in the present simpleHelp
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
How many examples of 'if' and 'when' are there?Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
This sentence has a 'will + infinitive' part and a present simple partQuestion 1 of 9
Grammatically good
Grammatically bad
Excellent! Great job! Bad luck! You scored:
That's not a conditional...
9 Questions
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
This sentence starts with 'when' and both parts are in the present simpleQuestion 1 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Can you have 'will' in the 'if' part of a conditional sentence?Question 2 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
It's a negative sentence, and both parts are in the present continuous. Is that OK for zero or first conditionals?Question 3 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
The pattern of this sentence is if + present simple + will + infinitive (without 'to')Question 4 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
The pattern of this sentence is present simple + if + present continuousQuestion 5 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Remember: 'won't' is the short form of 'will not'. So this sentence has the pattern will not + infinitive (without 'to') + if + present simpleQuestion 6 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
Both parts of this sentence are in the present simpleQuestion 7 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
How many examples of 'if' and 'when' are there?Question 8 of 9
Help
Activity
Here are nine sentences. Some are correct examples of the first conditional. Some are correct examples of the zero conditional. Others are wrong. Can you pick which are grammatically good and grammatically bad?
Hint
This sentence has a 'will + infinitive' part and a present simple partQuestion 9 of 9
Excellent! Great job! Bad luck! You scored:
Next
Well done. Next it's time to test how well you can use them. When do you use the zero and when do you use the first conditional?
Session Grammar
Zero conditional
Meaning and use: To talk about things which always happen if an action takes place.
Form: The if / when part is present simple. The result is also present simple.
If you work on the computer too long, your eyes start to hurt.
I get terrible headaches when I eat chocolate.
I feel upset when he doesn't answer my calls.
What comes out of a volcano when it erupts?The two parts can come in any order:
Your eyes start hurting if you work on the computer too long.
When I eat chocolate, I get terrible headaches.First conditional
Meaning and use: To talk about things which might happen if an action takes place.
Form: The if / when part is present simple. The result part is will + infinitive (without 'to').
If you drop that glass, it will break.
I'll go home when I finish work.
I won't wait for you, if you're late again.
Where will he live when he moves to the city?The two parts can come in any order:
That glass will break if you drop it.
When I finish work, I'll go home.