“Have shown” is the standard choice after have/has/had; “have showed” turns up in speech, yet “shown” reads clean in most writing.
You’re writing, you type “have showed,” and your brain hits the brakes. It feels close, but is it right? This mix-up pops up because show has two forms that look like they could both fit after have.
This guide clears it up with plain rules, real sentence patterns, and quick edits you can use in essays, emails, and reports. You’ll finish knowing when to pick shown, when showed still belongs, and how to spot the tricky cases in a single read-through. If you’re stuck between have showed or shown, treat it like a tense problem, not a spelling problem.
Fast Map Of Where Each Form Fits
| Sentence Job | Form To Use | Model Sentence |
|---|---|---|
| Simple past (one finished time) | showed | I showed the chart yesterday. |
| Present perfect (have/has + past participle) | shown | We have shown steady progress this term. |
| Past perfect (had + past participle) | shown | By noon, she had shown everyone the draft. |
| Passive voice (be + past participle) | shown | The results were shown on the screen. |
| Adjective use (describing a noun) | shown | The shown values match the notes. |
| Phrasal “show around” (tour someone) | showed | I have showed her around the campus. |
| Fixed pattern: “have shown that …” (proof/claim) | shown | Studies have shown that sleep affects learning. |
| Short clause after a noun | shown | The data shown in Table 2 comes from our survey. |
Have Showed or Shown In Perfect Tenses
When you see have, has, or had, you’re in a perfect tense. Perfect tenses pair the helping verb with a past participle. For show, that past participle is shown in standard edited English.
So, in most school, workplace, and publication writing, “have shown” is the safe default. It matches what major dictionaries list as the main past participle form of show.
Why “Shown” Sounds Right After “Have”
English keeps a lot of older verb patterns. Some verbs take -ed in the past tense yet switch forms for the participle: wrote/written, broke/broken, spoke/spoken. Show follows that same pattern: showed (past tense) and shown (past participle).
If you want a quick check, scan for a helper like have or had. If it’s there, your next move is almost always the participle: “have shown,” “had shown,” “has shown.”
One Link Worth Using When You’re Writing
If you ever want a fast, credible reference for the verb forms, the Cambridge Dictionary: show lists showed as past tense and shown as the participle.
When “Have Showed” Can Appear Without Sounding Wrong
Here’s the part that trips people: “have showed” is not always a red-pen moment. Some dictionaries record showed as an alternate participle in some uses, and many speakers use it in casual conversation.
Even so, your reader might still feel a bump, since “have shown” is the form they expect in edited writing. If your goal is smooth, low-friction prose, “shown” usually wins.
The Tour Meaning: “Showed Around”
There’s one place where “have showed” often appears even in careful writing: the phrasal idea “show someone around,” meaning you gave a tour. People say, “I have showed him around,” and it often passes without drawing attention because the phrase feels like a set action.
Even in that sense, “I have shown him around” is still common and reads clean. If you’re unsure, swap to shown and move on.
Dialect And Voice Notes
In some regions and family speech patterns, “showed” does double duty as both past tense and participle. That can be fine in dialogue or a personal note where you want the voice to stay natural.
In school work, résumés, grant writing, and published posts, readers tend to expect “shown.” Choosing it helps your writing feel steady across audiences.
Passive Voice And “Shown” In Reports
Passive voice uses a form of be plus a past participle: “is shown,” “was shown,” “were shown.” For show, that participle is “shown,” so “was showed” will look off to many readers.
This matters a lot in academic and technical writing, where passive constructions appear often: “The values were shown in Figure 1.” “The sample was shown to contain iron.”
Common Passive Patterns That Stay Clean
- is shown / are shown for general statements: The steps are shown below.
- was shown / were shown for a past event: The clip was shown during class.
- has been shown for a continuing claim: It has been shown that practice improves recall.
Choosing Between “Showed” And “Shown” By Sentence Test
When you’re stuck, don’t guess. Run a tiny test that takes ten seconds.
Step 1: Find The Helper
Circle the helper verb in your head. If you see have, has, had, or a be verb like was or is, you’re about to use a participle.
Step 2: Swap In A Similar Verb
Replace show with a verb that has a clear participle pair, like write. If “have wrote” sounds wrong, your sentence needs the participle, so “have shown” is the match.
Step 3: Check Time Words
Time words can steer you. “Yesterday,” “last week,” and “in 2022” often pair with simple past: “I showed.” Words like “since,” “already,” and “so far” often pair with perfect: “I have shown.”
Quick Fixes For The Most Common Mix-Ups
Most errors come from one of two habits: using the past tense after a helper, or using the participle when you meant a single past time. These quick edits catch both problems.
Mix-Up 1: “Have Showed” In Formal Writing
If your sentence is a report, essay, or application, switch to “have shown” unless you’re writing dialogue or you truly mean the “tour” sense. This keeps the line smooth for readers who expect the standard participle.
Mix-Up 2: “Was Showed” In Passive Voice
Change “was showed” to “was shown.” The passive needs the participle, and “shown” is the form readers know.
Mix-Up 3: “Have Shown” When You Mean One Finished Time
If you name a finished time, simple past is often the better fit: “I showed the slides on Monday.” Save “have shown” for actions that connect to now, such as ongoing results or experience.
Where Teachers And Editors Expect “Shown”
In graded writing, readers often treat “have showed” as an error even when it appears in some dictionaries. That’s not about logic; it’s about expectation and consistency across a classroom or style sheet.
If you’re writing for a wide audience, the safer move is to stick with “shown” after helpers and in passive voice. You can keep “showed” for the simple past: “I showed,” “she showed,” “they showed.”
A Second Reference Link If You Need Backup
The Merriam-Webster entry for show lists shown and also notes showed as an alternate participle in some use, which explains why you may hear both.
Editing Checklist For Show Verb Forms
Use this pass at the end of a draft. It’s built to catch the places where the wrong form slips in during quick typing.
| Spot This | Do This | Mini Check |
|---|---|---|
| have/has/had + showed | switch to shown | Does “have written” sound right in the same slot? |
| was/were + showed | switch to shown | Passive voice needs a participle. |
| yesterday/last + have shown | switch to showed | Finished time often calls for simple past. |
| data shown / figure shown | keep shown | It acts like an adjective. |
| I have showed you around | either form works | Pick shown for a formal tone. |
| has been showed | switch to has been shown | Be + participle pattern. |
| shown + a finished time | switch to showed | One past point often matches simple past. |
| Sentence still feels odd | rewrite with “demonstrated” or “presented” | Swap the verb if style needs it. |
Why Spellcheck Flags “Have Showed”
Many grammar checkers treat “have shown” as the normal participle. When they see “have showed,” they often flag it as uncommon, even when the meaning is clear.
If you want the underline gone in formal work, switch to “shown.” If you’re writing dialogue or a casual note, you may keep the voice and ignore the flag.
Mini Practice To Lock The Choice
These quick items train your eye to spot the helper verb. When you pause at have showed or shown, this is the same check you’re doing in your head.
Choose The Form
- I have (showed/shown) my ID at the desk.
- She (showed/shown) the class her outline last Friday.
- The photo was (showed/shown) on a projector.
- They had (showed/shown) the proof before the deadline.
- The steps (showed/shown) in the diagram match the text.
- We have (showed/shown) her around the lab twice.
Answers With Quick Reasons
- shown — “have” needs a participle.
- showed — a finished time (“last Friday”) fits simple past.
- shown — passive voice uses be + participle.
- shown — “had” takes a participle.
- shown — it works like an adjective after the noun.
- shown — it reads smooth in formal tone; “showed” can appear in speech.
If you got four or more on the first pass, you’re set. If not, no stress—run the helper-verb scan on your next paragraph and it will click fast.
Copy Ready Sentence Patterns You Can Reuse
Use these patterns when you want your grammar to stay quiet while your message does the work.
- We have shown + result: We have shown steady improvement across three quizzes.
- They have shown + ability: They have shown skill in group tasks.
- It has been shown + claim: It has been shown that spaced practice helps memory.
- I showed + object + time: I showed my notes last night.
- The chart shows + point: The chart shows a rise in attendance.
When “Show” Sounds Repetitive
In essays and reports, show can pop up three lines in a row: the chart shows, the table shows, the results show.
If you want a swap, pick a verb that matches what you mean and keep the grammar pattern the same.
- display for visuals: The graph displays the change.
- present for sharing work: She presented the findings.
- indicate for evidence: The numbers indicate a drop in errors.
- demonstrate for teaching a method: He demonstrated the steps.
After you swap, scan for helpers again. “Have presented” still uses a participle, just like “have shown” in the last edit pass.
A Clean Rule To Carry Into Any Draft
If a helper verb is present, reach for “shown.” If you’re telling what happened at one past time, use “showed.” That single habit fixes most slips.
When you want your writing to match school and publication norms, default to have shown. If you’re writing speech-like dialogue, “have showed” can fit the voice, yet it’s still wise to watch for passive voice, where “shown” is the form readers expect.
And yep, once you train your eye to spot helpers, this choice starts to feel automatic.