📘 Part of the Complete English Course · Intermediate (B1), week 4
We use the first conditional for things that are possible in the future and their likely results: If you call before 10, they'll send someone today.
The rules
Form
| If clause | Result | Example |
|---|---|---|
| if + present simple | will + verb | If it rains, we'll stay inside. |
| if + present simple | can / might / should + verb | If you're free, you can join us. |
| unless = if not | will + verb | Unless you call, they won't know. |
Remember
- Don't use 'will' in the if-clause: If you call (not 'If you will call').
- You can put the result first: We'll stay inside if it rains (no comma).
- Use 'when' for things that will definitely happen: When I get home, I'll call you.
Listen and repeat
- If the internet stops working again, I'll call the provider.
- If you send me your account number, I'll check it now.
- You won't get your bond back unless you clean the oven.
- When the technician arrives, I'll let you know.
Common mistakes
| Not this | Say this | Why |
|---|---|---|
| If you call, I'll answer. | No will after if. | |
| If it rains, we'll stay home. | if + present, will + verb. | |
| Unless you pay… / If you don't pay… | unless already means if not. |
Check yourself
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Frequently asked questions
When do we use First conditional in English?
We use the first conditional for things that are possible in the future and their likely results: If you call before 10, they'll send someone today. Don't use 'will' in the if-clause: If you call (not 'If you will call').
What are common mistakes with First conditional?
Say 'If you call, I'll answer.', not 'If you will call, I'll answer.' (No will after if). Say 'If it rains, we'll stay home.', not 'If it rain, we stay home.' (if + present, will + verb). Say 'Unless you pay… / If you don't pay…', not 'Unless you don't pay…' (unless already means if not).
What level is this First conditional lesson?
It's a Intermediate (B1) lesson, week 4 of the free Complete English Course. It takes about 10 minutes and ends with a quiz.