would never done (have done)

Writers often write "would never done" or "would of done" when they mean the conditional perfect: "would have done." The conditional perfect is would + have + past participle (would have gone, would have finished).

Below are clear rules, quick rewrite patterns, and many ready-to-use corrections for work, school and casual writing so you can fix sentences fast.

Quick answer

Use would + have + past participle (would have done). "Would never done" is wrong because it drops or replaces the auxiliary have.

Conditional perfect: would + have + V3 → would have done, would have gone, would have eaten.
If you mean a real past event, use the simple past (did / never did).
Replace "would of" with "would have" (or "would've") and check the past participle (gone, eaten, done, written).

Core explanation: form and use

Form: would + have + past participle (V3). Use it for hypothetical or counterfactual past actions - things that did not happen.

Why the error happens: spoken "would've" sounds like "would of," and some writers drop "have," producing "would never done."

Correct pattern: would + have + V3 → would have done, would have gone, would have eaten.
Typical use: unreal past results (If I had known → I would have helped).

Wrong: If she hadn't called, I would never done anything.
Right: If she hadn't called, I would never have done anything.
Wrong: He would of finished the task if you'd told him.
Right: He would have finished the task if you'd told him.

Rewrite help: templates and quick fixes

Pick the pattern that matches your meaning: conditional perfect (unreal past), simple past (real past), or present conditional (habit/possibility).

Fix A (conditional past): Insert have → would have + V3.
Fix B (actual past): Use simple past (did / never did / completed).
Fix C (present/future/habit): Use would + base verb (would do) for repeated or possible present actions.

Wrong: I would never done that. → Fix A: I would never have done that.
Wrong: She would never done her chores. → Fix B: She never did her chores.
Wrong: I would never done that when I'm angry. → Fix C: I would never do that when I'm angry.
Wrong: I would of sent the files, but my laptop crashed. → Fix A: I would have sent the files, but my laptop crashed.
Wrong: They would of told us sooner. → Fix B (real): They told us sooner. / Fix A (hypothetical): They would have told us sooner.
Wrong: He would never done it for money. → Fix A: He would never have done it for money.

General examples: common wrong/right pairs

Wrong: I would never done that prank. -
Right: I would never have done that prank.
Wrong: If you'd warned me, I would of reacted differently. -
Right: If you'd warned me, I would have reacted differently.
Wrong: She would have never went to that restaurant. -
Right: She would never have gone to that restaurant.
Wrong: They would have ate before leaving. -
Right: They would have eaten before leaving.
Wrong: I wouldof never known. -
Right: I would never have known.

Work examples: emails, reports and meeting notes

In business writing, prefer the full form "would have" and the correct past participle to avoid ambiguity about responsibility and timing.

Wrong: If we had the figures, we would never done the analysis this way. -
Right: If we had the figures, we would never have done the analysis this way.
Wrong: I would of sent the invoice earlier, but approval was delayed. -
Right: I would have sent the invoice earlier, but approval was delayed.
Wrong: We would never done that in a client-facing document. -
Right: We would never have done that in a client-facing document.

Try your own sentence

Test the whole sentence, not just the phrase. Context usually makes the correct form obvious.

School examples: essays, feedback and exams

Teachers deduct points for missing auxiliaries and wrong past participles. Use 'would have + V3' for past hypotheticals.

Wrong: If the experiment had been repeated, the scientists would never done the same procedure. -
Right: If the experiment had been repeated, the scientists would never have used the same procedure.
Wrong: I would of improved my score if I'd read the instructions. -
Right: I would have improved my score if I'd read the instructions.
Wrong: He would never done his homework before class. -
Right: He would never have done his homework before class.

Casual examples: texts, posts and speech

Contractions like "would've" are fine in speech and private texts. Avoid writing "would of" or dropping "have" in messages others will read carefully.

Wrong: I would of gone but I was busy. -
Right: I would have gone, but I was busy.
Wrong: She would never done that - no chance. -
Right: She would never have done that - no chance.
Wrong: I'd of helped if you'd asked. -
Right: I'd have helped if you'd asked. / I would have helped if you'd asked.

Memory tricks and quick proofreading checks

Use these fast checks before you send or submit.

Read it aloud: if you hear "would" followed immediately by a past participle, add "have."
Spot the V3: if the verb is a past participle (done, gone, eaten), confirm that "have" appears after "would."
Scan modals: for would/could/should + past hypothetical, look for "have." If you see "of" or nothing, fix it.

Wrong: I would never done it. -
Right: I would never have done it.
Wrong: She would have never went. -
Right: She would never have gone.
Wrong: They would have ate earlier. -
Right: They would have eaten earlier.

Similar mistakes, spacing, hyphenation and past participles

This error often appears with "would of," wrong past participles (went → gone), and run-together words (wouldof).

"Would of" is always wrong in standard writing; use "would have" or "would've."
Use the correct past participle: went → gone, ate → eaten, wrote → written.
Watch spacing and typos: "wouldof" or "wouldhave" hide missing auxiliaries.

FAQ

Is "would of done" ever correct?

No. "Would of" is a spelling mistake based on hearing the contraction "would've." The correct forms are "would have done" or "would've done."

Why do people write "would've" as "would of"?

Because "would've" sounds like "would of" in speech. Remember that "have" is the auxiliary, not "of."

When should I use "would have done" vs "would do" or "did"?

"Would have done" = hypothetical past (didn't happen). "Would do" = hypothetical present/future or habitual. "Did" = an action that actually happened in the past.

Should I spell out "would have" in formal writing?

Yes. In formal writing, prefer the full "would have" for clarity rather than contractions like "would've."

How can I catch these errors quickly when proofreading?

Scan for modals (would, could, should). If they refer to past hypotheticals, check the next word: is it "have"? If "have" is missing or replaced by "of," insert "have" and verify the past participle.

Need a quick check?

If you're unsure, paste the sentence into a grammar checker or read it aloud. When in doubt, use one of the three rewrite patterns: insert have (would have + V3), change to simple past, or switch to would + base verb depending on meaning.