The verb to prove · Conjugation
Past Simple of prove
The answer: proved
A2
A finished action at a definite time in the past.
Quick answer
The Past Simple of the verb to prove is proved.
Example: She proved her innocence.
Full conjugation in the Past Simple
| Pronoun | Form |
|---|---|
| I | proved |
| You | proved |
| He / She / It | proved |
| We | proved |
| You (pl.) | proved |
| They | proved |
Common mistakes to avoid
1. She proven her innocence ❌
In the Past Simple, always use proved (regular): She proved her innocence. As a past participle: proved or proven. As an adjective, proven is better: a proven method.
2. A mixed verb
Prove has a regular Past Simple (proved), but its past participle can be irregular (proven). Show works the same way: show → showed → shown.
3. I have a prove ❌
The noun is proof, not prove: I have proof. Learners often confuse the two words when they write. In everyday English, proof usually has no a: Do you have any proof?
Practice quiz
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Frequently asked questions
What is the past tense of prove?+
The Past Simple of prove is proved (regular). The past participle can be proved or proven (irregular). Prove → proved → proved / proven.
What is the difference between proved and proven?+
As a past participle, both are correct. Proven is more common as an adjective: a proven method. Proved is common after have: She has proved her point. Today, proven is more and more common everywhere.
Is prove a regular or irregular verb?+
Both, in a way. The Past Simple is regular (proved), but the past participle has an extra irregular form (proven). Show is similar: show → showed → shown.
How do you use prove in a sentence?+
Use prove + something: She proved her innocence. Useful expressions: prove a point (show that your idea is right), prove someone wrong (show that someone was wrong), prove yourself (show that you are good at something).
Why do we say innocent until proven guilty?+
Innocent until proven guilty means a person is innocent until a court shows they did the crime. It is a basic rule of law. Here, proven works like an adjective.
Related pages: prove Past 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/past-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.
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More forms of the verb to prove are coming soon.