The verb to prove · Conjugation
Future Simple of prove
The answer: will prove
A2
A decision made now, a promise or a prediction.
Quick answer
The Future Simple of the verb to prove is will prove.
Example: I will prove the theory tomorrow.
Full conjugation in the Future Simple
| Pronoun | Form | Contraction |
|---|---|---|
| I | will prove | I'll prove |
| You | will prove | You'll prove |
| He / She / It | will prove | He'll / She'll / It'll prove |
| We | will prove | We'll prove |
| You (pl.) | will prove | You'll prove |
| They | will prove | They'll prove |
Common mistakes to avoid
1. I will to prove ❌
After will, use the base form, with no to: I will prove. Will never takes -s, and the verb after it has no -s either. Say she will prove, not she wills prove or she will proves.
2. I will can prove ❌
Will is a modal verb (a helper verb like can, must or should). Two modal verbs cannot go together. Use will be able to for can: I will be able to prove. Use will have to for must: I will have to prove.
3. When I will arrive, I will call you ❌
After when, if, before, after and as soon as, use the Present Simple for the future, not will. Say When I arrive, I will call you. Will goes in the other part of the sentence.
Practice quiz
What's next?
Master the Future Simple of prove when you speak, not just on paper
The conjugation is clear in your head. On PLAY, you practise it in a game, with instant feedback, until it comes out on its own.
Practise the Future Simple of prove on PLAYFree · No sign-up · 3 minutes
For teachersYour whole class practises the Future Simple of prove, and you follow each student
The Academy has self-marking activities on this form, with a dashboard for each student: you see at a glance who is falling behind.
Discover the Academy30-day free trial · No bank card needed
English contestThe English contest tests the Future Simple of prove in real sentences
Instead of a single school exercise, your students meet this tense in context, in a contest that really motivates them.
Register my students5,000 students every year · Primary and secondary
Frequently asked questions
How do you conjugate prove in the Future Simple?+
Use will + the base form (the verb with no to): will prove. The form is the same for every person: I will prove, she will prove, they will prove. In speech, will often becomes 'll: I'll prove.
When do you use the Future Simple of prove?+
Use will for a decision you make at the moment of speaking: The phone is ringing. I'll answer it. Also use it for a promise (I'll help you.) and for a prediction (I think it will rain.).
Is it will or going to?+
Use going to for a plan you made before you speak: I'm going to visit my grandma on Sunday. Use will for a decision you make now: I'm hungry. I'll make a sandwich. With prove: I'm going to prove (a plan), I'll prove (a decision now).
How do you make the negative of prove in the Future Simple?+
Use will not + the base form, or the short form won't: I won't prove, she won't prove. Careful with the spelling: the short form is won't, not willn't.
How do you make a question with prove in the Future Simple?+
Put will before the subject: Will you prove…?, When will she prove…? The main verb stays in the base form, with no -s and no to. Short answers: Yes, I will. / No, I won't.
Related pages: prove Future Simple
Pages on a similar topic or with a similar use, so you can keep exploring.
Updated on 12 November 2026 by the Big Challenge teaching team. Every year, more than 500,000 students across Europe take part in our English contest, created in 1999. Our teaching approach →
The Big Challenge · Updated on 12 November 2026 · Source: www.thebigchallenge.com/bl/academy/learn-english/verbs/prove/future-simple
© The Big Challenge. Copying allowed for classroom use. Every year, more than 500,000 students across Europe take part in our English contest, created in 1999.
Keep learning
More forms of the verb to prove are coming soon.