Grammar › Verb Tenses › Future Simple (will)
Future Simple (will)
Use 'will' + base verb for the future when you decide, predict or promise. Use it for:
- Instant decisions — I'll help you.
- Predictions and opinions — It will rain later.
- Promises and offers — I'll call you tonight.
For plans you decided before now, use 'be going to' instead (I'm going to study tonight).
How to form the future with will
| Form | Structure | Example |
|---|---|---|
| Affirmative | subject + will (‘ll) + base verb | She will call later. |
| Negative | subject + won’t + base verb | They won’t come. |
| Question | Will + subject + base verb? | Will you help? |
Will is the same for every subject — it never adds -s or changes. In speech and informal writing we usually contract it to ‘ll (I’ll, she’ll), and the negative is won’t.
When to use will
1. Instant decisions
A decision made at the moment of speaking.
- The phone’s ringing. — Don’t worry, I’ll get it.
- I’ll have the salad, please.
⚠️ Typical error:
I’m going to get it.(deciding right now) → For a decision made as you speak, use will: I’ll get it.
2. Predictions and opinions
Often with I think, probably, maybe.
- I think it will rain tomorrow.
- You’ll love this film.
⚠️ Typical error:
It rains tomorrow.→ A prediction takes will: It will rain tomorrow.
3. Promises, offers and requests
- I promise I’ll call you tonight.
- Will you open the window?
Common mistakes
1. Using will for plans you already made. If the plan existed before now, use going to or the present continuous. I will meet Sara tomorrow (already arranged) → I’m meeting Sara tomorrow.
2. Changing the form of will. Will never adds -s. She wills come → She will come. Pro tip: one form fits every subject.
3. Using the present simple for predictions. In 2050, cars drive themselves → In 2050, cars will drive themselves.
✏️ Practice: Future Simple (will)
1. The phone's ringing. — Don't worry, I ___ it.
2. I think it ___ tomorrow.
3. Don't worry — she ___ late. She's very reliable.
4. ___ you ___ me with this box, please?
5. He ___ arrive at nine.
6. I promise I ___ you tonight.
7. We ___ to Italy this summer — we booked the flights last week.
8. In 2050, most cars ___ themselves.
9. Rewrite with the same meaning: 'Perhaps I'll see you at the party.'
10. It's hot in here. — ___ I open a window?
Frequently asked questions
What is the difference between 'will' and 'going to'?
Use 'will' for decisions made at the moment of speaking, promises and general predictions. Use 'going to' for plans decided before now and predictions based on evidence.
Does 'will' change for he/she/it?
No. Will is the same for every subject: I will, she will, they will. The contraction is 'll and the negative is won't.
Can I use 'will' for arrangements?
For fixed arrangements, English usually prefers the present continuous (I'm meeting her at six) or going to. Will is for decisions made now.
What does 'shall' mean?
'Shall' is a more formal alternative to 'will' with I and we, common in offers and suggestions: Shall I open the window? In everyday English, 'will' is more common.
👩🏫 For teachers
CEFR objectives for “Future Simple (will)”:
- Can form affirmative, negative and interrogative sentences with will + base verb (CEFR A2).
- Can use will for decisions, predictions, promises and offers.
- Can distinguish will from going to and the present continuous for future meaning.
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