What is the Future with Will?
The future with will uses the modal auxiliary will followed by the base verb — no conjugation, no agreement changes. It is the same for every subject: I will, you will, he will, she will, we will, they will.
Will is not the only way to talk about the future in English — going to, the Present Continuous, and even the Present Simple all do this too. Will is the right choice when you are making a decision in the moment, expressing a general prediction or belief, making a promise or offer, or stating a future fact or certainty. If the decision was made before you started speaking, use going to instead.
One critical rule learners often miss: will is never used in conditional or time clauses. After if, when, as soon as, until, before, after, English uses the Present Simple to refer to the future — not will. This is one of the most tested points at B1 level.
How to Form It
Will never changes — no -s, no agreement. The verb that follows is always the base form (infinitive without to). In spoken English, will almost always contracts to 'll: "I'll call you", "She'll be there", "They'll understand."
Subject + will + base verbPositive
| Subject | will / 'll | Base verb | Example |
|---|---|---|---|
| I | will / 'll | call | I 'll call you tonight. |
| He / She / It | will / 'll | be | She 'll be here by 9. |
| You / We / They | will / 'll | understand | They 'll understand eventually. |
Negative and Question
Subject + won't + base verb | Will + subject + base verb? — Short answers: "Will you come?" → "Yes, I will." / "No, I won't." Never "Yes, I will come" in a short answer — the base verb is dropped.
| Form | Structure | Example |
|---|---|---|
| Negative | won't + base verb | I won't tell anyone, I promise. |
| Negative (full) | will not + base verb | She will not accept that offer. |
| Question | Will + subject + base verb? | Will you help me with this? |
When to Use the Future with Will
Spontaneous decisions made at the moment of speaking
The most important use at B1 level: when you make a decision at the exact moment you are speaking — in response to a situation, a request, or something you have just heard or seen — use will. The decision was not made before this conversation. This is the key distinction from going to, which is for pre-planned decisions.
- "The phone is ringing." "I 'll get it."
- "We're out of milk." "Don't worry, I 'll buy some on the way home."
- "Can anyone help me move this table?" "I 'll do it."
- "I'm cold." "I 'll close the window."
- Looking at the menu for the first time: "I 'll have the steak, please."
Predictions based on opinion or belief
When you express what you think, believe, expect, or imagine will happen in the future — without specific visible evidence right now — use will. These are general opinions about the future, often introduced by I think, I expect, I'm sure, probably, definitely. Compare this with going to, which is used when you can see concrete evidence.
- I think it will rain tomorrow.
- She 'll probably get the job — she's very qualified.
- I'm sure you 'll love the film.
- In fifty years, people will live on Mars.
- He won't remember to bring the report — he never does.
Promises, offers, threats, and requests
Will is the standard form for interpersonal commitments — positive and negative. When you volunteer to do something (offer), commit to doing it (promise), warn someone of consequences (threat), or ask someone to do something (request), will is the natural form. These uses are all grounded in the present moment, which is why going to (pre-planned) sounds wrong here.
- Promise: I 'll always be there for you.
- Promise (negative): I won't tell anyone about this.
- Offer: I'll carry those bags for you.
- Offer: I'll give you a lift to the airport.
- Threat: If you do that again, I 'll call the manager.
- Request: Will you help me with this form?
Future facts and certainties
For events that are certain or inevitable in the future — fixed facts, scheduled natural events, or things that follow inevitably — will is the natural form. These are not personal plans or opinions; they are statements of fact about what is going to happen.
- The sun will rise at 6:12 tomorrow morning.
- She 'll be 30 next year.
- The conference will take place in Berlin this autumn.
- Water will freeze at 0°C.
Time Expressions
Will vs Going To
This is the most important distinction at B1. Both forms can talk about the future, but they answer different questions about the speaker's relationship to the future event. Getting this right is one of the clearest markers of B1 fluency.
Will — spontaneous decision (now)
"I will have the soup." (decides at the table)
The decision is made this second, in response to seeing the menu. No prior planning.
Going to — pre-made decision (before)
"I am going to have the soup." (decided before sitting down)
The decision was already made — the speaker came in planning to have soup.
Will — general opinion or belief
"I think it will rain tomorrow."
A personal belief about the future — no specific visible evidence, just an opinion.
Going to — evidence visible right now
"Look at those clouds — it is going to rain."
The speaker can see the clouds now. The prediction is grounded in present observation.
Will in Conditionals and Time Clauses
One of the most important rules about will: it cannot be used in the conditional or time clause — only in the main clause. In the subordinate clause introduced by if, when, as soon as, before, after, until, by the time, English always uses the Present Simple to refer to the future.
Correct — Present Simple in the if/when clause
If it rains, we will stay inside.
The if clause uses Present Simple (rains), even though it refers to the future.
Wrong — will in the if/when clause
If it will rain, we will stay inside. ✗
Using will in an if clause is ungrammatical in standard English.
Correct — Present Simple in the when clause
When she arrives, I will tell her the news.
The when clause uses Present Simple (arrives). Will goes in the main clause only.
Wrong — will in the when clause
When she will arrive, I will tell her the news. ✗
Using will in a when time clause is a very common learner error.
The rule in one sentence: In sentences with if, when, as soon as, before, after, until, by the time — use Present Simple in the subordinate clause and will in the main clause — never will in both.
Common Mistakes
Using "will" in the if/when clause of a conditional
✗ If it will be warm tomorrow, we will go to the beach.
✓ If it is warm tomorrow, we will go to the beach.
After if (and all other time conjunctions: when, as soon as, before, after, until, by the time), the future is expressed with the Present Simple — never with will. This rule applies even when the situation is clearly future. The will belongs only in the main (result) clause.
Using "will" for a pre-planned decision (should be "going to")
✗ "What are you doing this weekend?" "I will visit my parents — I arranged it last week."
✓ "I am going to visit my parents." / "I am visiting my parents."
If the decision or arrangement was made before this conversation, use going to (intention) or the Present Continuous (confirmed arrangement). Will sounds as though you are deciding right now — which contradicts "I arranged it last week."
Adding "to" after "will"
✗ She will to call you later. / I will to go to the shops.
✓ She will call you later. / I will go to the shops.
Will is a modal auxiliary — it is followed directly by the base verb, with no to in between. "Will to go" confuses will with the going to structure. Always: will + base verb, no infinitive marker.
Using "going to" for spontaneous offers and reactions
✗ "You look tired." "I'm going to make you a cup of tea."
✓ "I'll make you a cup of tea."
When you make a spontaneous offer in response to what someone has just said, will is the natural form. "I'm going to make…" implies you had already planned to make tea before noticing the person was tired — which sounds odd. Will matches the immediate, responsive nature of the offer.
Using "will" for evidence-based predictions
✗ Look at him — he will faint! (He's clearly about to faint.)
✓ Look at him — he is going to faint!
When the prediction is based on what you can see happening right now — someone swaying, looking pale — the correct form is going to. The phrase "Look at…" is a strong signal that you need going to, not will. Will is for opinions and beliefs, not for reporting what is visibly about to happen.
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