'hasn't' + irregular past tense verb

After has/hasn't (or have/haven't) use the past participle, not the simple past. Say "She hasn't gone," "He hasn't written," "They haven't seen."

Quick answer

Form: has/have + past participle. Avoid has/hasn't + simple past (hasn't went, haven't saw). If unsure, look up the past participle (gone, written, eaten, driven).

Core explanation: present perfect vs simple past

The present perfect (has/have + past participle) links a past action to the present and usually doesn't give a specific time. The simple past names a finished action at a specific time.

• Present perfect (correct): She has gone; He hasn't written the memo.
• Simple past (correct when time is specified): She went yesterday; He wrote it last week.
• Incorrect mix: She hasn't went; He hasn't wrote.

How to spot and fix the error fast

Scan for has/have or hasn't/haven't followed by a verb that looks like a past tense. If the verb is the simple past (went, wrote, ate), swap it for the past participle (gone, written, eaten). If the sentence names a specific past time, use simple past instead.

• Spot: has/hasn't + past-looking verb.
• Check: is the verb a past participle (gone, written) or a simple past (went, wrote)?
• Fix: replace with the past participle; or change to simple past if you include a time word.

• Wrong: She hasn't went to the meeting.
• Right: She hasn't gone to the meeting.
• Wrong: I haven't saw your message.
• Right: I haven't seen your message.

Rewrite help: direct fixes and smoother alternatives

Three quick options when you find the bad form: (1) direct fix - swap in the past participle, (2) change to simple past if you specify time, (3) rephrase for tone or clarity (avoid contractions, use passive, or add yet).

• Direct fix: hasn't went → hasn't gone.
• Time-specified: She didn't go yesterday.
• Tone: formal - has not written; casual - hasn't written.

• Wrong: She hasn't went to the store yet.
• Right: She hasn't gone to the store yet.
• Rewrite: She didn't go to the store (if you mean a specific past time).
• Wrong: I haven't ate anything.
• Right: I haven't eaten anything.
• Rewrite: I didn't eat anything this morning. (specific time → simple past)
• Wrong: They haven't began the rollout.
• Right: They haven't begun the rollout.
• Rewrite: The rollout hasn't started yet. (natural alternative)

Use tools as a learning aid

Grammar checkers speed up editing and highlight repeated mistakes. Treat each suggestion as a mini-lesson: note the past participle and repeat it in a sentence to remember it.

Combine a quick manual checklist (spot → check → fix) with a grammar tool when you edit many emails or reports to catch common slips like "hasn't went."

Examples: compact wrong/right pairs

Memorize a short list of high-frequency irregulars or keep it handy: go → gone, see → seen, write → written, take → taken, drink → drunk, begin → begun, drive → driven, sing → sung, run → run (past participle same as base).

• Wrong: She hasn't went to the conference.
  Right: She hasn't gone to the conference.
• Wrong: He hasn't wrote the proposal.
  Right: He hasn't written the proposal.
• Wrong: They haven't saw the new policy.
  Right: They haven't seen the new policy.
• Wrong: She hasn't took her medication.
  Right: She hasn't taken her medication.
• Wrong: I haven't drank any coffee today.
  Right: I haven't drunk any coffee today.
• Wrong: We haven't began the project.
  Right: We haven't begun the project.
• Wrong: He hasn't sang in public since then.
  Right: He hasn't sung in public since then.
• Wrong: You haven't drove this model before, right?
  Right: You haven't driven this model before, right?

Try your own sentence

Test the whole sentence rather than the isolated phrase. Context usually makes the correct form obvious.

Real usage: work, school, and casual examples

Grouped examples show direct fixes plus tone-appropriate rewrites when useful.

• Work
  • Wrong: She hasn't wrote the Q2 summary yet.
    Right: She hasn't written the Q2 summary yet.
  • Rewrite: Polite email: She hasn't written the Q2 summary yet; we'll follow up on Tuesday.
  • Wrong: He hasn't took care of the client's outage.
    Right: He hasn't taken care of the client's outage.
  • Rewrite: Status: The outage remains open; the engineer has not yet addressed the issue.
  • Wrong: The team hasn't began testing on the new build.
    Right: The team hasn't begun testing on the new build.
• School
  • Wrong: She hasn't did the literature review thoroughly.
    Right: She hasn't done the literature review thoroughly.
  • Rewrite:
    Formal: The literature review has not been completed thoroughly.
  • Wrong: The student hasn't wrote the conclusion clearly.
    Right: The student hasn't written the conclusion clearly.
  • Wrong: We haven't ran the experiment under controlled conditions.
    Right: We haven't run the experiment under controlled conditions.
• Casual
  • Wrong: She hasn't ate yet - should I bring her food?
    Right: She hasn't eaten yet - should I bring her food?
  • Rewrite: Short text: She hasn't eaten. Want me to get something?
  • Wrong: I haven't saw that show.
    Right: I haven't seen that show.
  • Wrong: He hasn't sang since college.
    Right: He hasn't sung since college.

Memory tricks and short practice drills

Practice a small set of high-frequency irregulars and do focused drills: correct three wrong sentences aloud each day.

• Group by sound or pattern: go/gone/went (o), see/seen/saw (ee), write/written/wrote (wr-), drink/drunk/drank (nk), take/taken/took (t), drive/driven/drove (dr-).
• Drill: write three wrong sentences (hasn't went, hasn't wrote, hasn't ate) and correct them aloud: hasn't gone, hasn't written, hasn't eaten.
• Create a 20-card flashcard set and test weekly.

• Drill: Wrong → Right: She hasn't drove → She hasn't driven; I haven't ate → I haven't eaten; They haven't wrote → They haven't written.
• Mnemonic: Many past participles end in -n or -en (gone, written, eaten, driven, taken, seen, sung).

Similar mistakes to watch for

Mixing up past participles happens in other constructions too: modal perfects, passive voice, and perfect infinitives.

• Modal + perfect: should have gone (not should have went).
• Passive voice: was written (not was wrote).
• Perfect infinitive: to have spoken (not to have spoke).

• Wrong: She could have went to the workshop.
  Right: She could have gone to the workshop.
• Wrong: The report was wrote last year.
  Right: The report was written last year.
• Wrong: I should've ran this test earlier.
  Right: I should've run this test earlier.

Contractions, spacing, and hyphenation traps

Write contractions as one word: hasn't. Don't split or hyphenate them. Watch for non-breaking spaces or copy/paste issues that break contractions and confuse checkers.

• Correct: hasn't.
  Incorrect: has n't, has n't, has-n't.
• Avoid hyphenating contractions: has-not is wrong if you mean hasn't; use has not for emphasis in formal writing.
• If a checker flags "has n't" as two words, remove the space and re-run the check.

• Usage: Correct: She hasn't gone yet.
  Incorrect: She has n't gone yet.
• Usage: Avoid: He has-not submitted the file.
  Use: He has not submitted the file.

FAQ

Is "hasn't went" ever correct?

No. "Went" is the simple past; after has/hasn't you need the past participle: hasn't gone.

When should I use hasn't vs didn't?

Use hasn't/have not + past participle when the action affects the present or the time is unspecified. Use didn't + base verb for actions tied to a specific past time (yesterday, last week).

How can I quickly find a verb's past participle?

Check a reliable dictionary or grammar reference, or run the sentence through a trusted grammar checker that explains the correction.

Should I avoid contractions in formal writing?

Yes. Use "has not" in formal contexts, but always use the correct verb form: "has not written," not "has not wrote."

My tool flags "hasn't done" - how do I check if that's right?

'Done' is the past participle of 'do', so "hasn't done" is correct. If a tool flags it, look for spacing or punctuation that split the contraction or check the tool's dialect settings.

Fix one sentence now

Pick a sentence from an email or draft: find has/hasn't + a past-looking verb and apply the spot → check → fix checklist. Replace the simple past with the past participle or switch to simple past if you include a time word.

If you'd like a quick second check, paste the sentence into a grammar tool to see highlighted suggestions and alternatives.