The Past Tense of Mow Is Mowed — Mown Only Fits in One Spot

You're doing dictation practice on a conversation about household chores. The speaker lets out a sentence, you write it down as "I've already moved the lawn," and the third word gets a red line under it. The real sentence is "I've already mowed the lawn." You only added one very small sound in the middle of the word, and it's a sound the speaker himself didn't pronounce clearly either. Quick answer first: the simple past of mow is mowed, and the past participle is mowed or mown. Both participle forms are correct, but the simple-past slot only accepts mowed.

The hard part sits in two places, and both are matters of sound. First, the asymmetry above: a lot of learners hear mown and assume it works everywhere, and write "I mown the lawn." Second, both past forms of mow line up exactly with another common word. mowed sounds exactly like mode, mown sounds exactly like moan. Not close, but identical, and that's something the ear can't fix — only grammar can.

This article runs through the whole chain: the form table for mow, the group of verbs that keep the n ending in the participle, which slot only accepts mowed and which slot favors mown, a listening section with three homophone pairs placed side by side, fixed combinations written in the past form, and mow down, whose meaning isn't gentle at all.

• The form table for mow, and the participle group that keeps the n ending
• Mowed or mown, and which slot only accepts mowed
• Hearing mowed and mown in real speech
• Common combinations with mowed and mown
• Mistakes Vietnamese speakers commonly make with mow
• Quick exercise
• Frequently asked questions

The form table for mow, and the participle group that keeps the n ending

Five forms, and only one slot has two choices. Pronunciation follows American English as the standard, with British English noted only where it clearly differs.

The most notable spot in this table is the empty box. The simple-past slot has only one word, mowed, and there's no second option. mown never stands there. The sentence "I mown the lawn" is wrong, and it's wrong in a way a native speaker catches instantly, unlike spots where both forms are acceptable.

mow belongs to a small group with a very particular treatment: the simple-past form has switched entirely to the regular pattern with an ed ending, but the participle form keeps the old n ending. The whole group includes show with shown, sew with sewn, sow with sown, saw with sawn, strew with strewn, hew with hewn, and mow with mown. In all of these verbs, the ed form still works in the participle slot, while the n form is locked to that slot only.

There's a secondary rule worth remembering across the whole group, and it saves you quite a few moments of hesitation. When the participle stands before a noun to describe it, the n-ending form almost always wins: a mown lawn, newly mown hay, freshly sewn seams, hand sawn planks. When the participle stands after have or has in an ordinary sentence, both forms work, and American English leans toward the ed form more clearly than British English does.

One more point so you don't go looking in the wrong direction. mow is not a variant of grow or of know, even though all three have participles ending in n. grow and know change their vowel outright in the simple past, becoming grew and knew, while mow changes nothing at all, just adds ed. Those are two different mechanisms, and mixing them up with grow's mechanism produces the nonexistent form "mew."

Reading across a few articles in the same group goes faster than learning each one in isolation. The past tense of show is the most common member of this pattern, showed with shown, and it comes up many times more often than mow, so it's worth learning first. The past tense of sew is the closest parallel case, sewed with sewn, and it adds its own tangle of spelling confusion because sew, sow, and so sound alike. The past tense of grow is worth reading to see the difference, since grow changes its vowel while mow doesn't, even though both of their participles end in n. The article English grammar gives you the overall picture of tenses and verb groups.

Mowed or mown, and which slot only accepts mowed

The shortest rule: the simple past only has mowed, while after have, has, had, or be, both mowed and mown work, and when the participle stands right before a noun it's almost always mown. Those three sentences are the entire rulebook for this verb.

The fifth line deserves more comment. "Newly mowed grass" isn't wrong, and you'll come across it, but "newly mown grass" is a far more familiar way to write it, to the point that it's almost a fixed phrase in descriptive writing. This isn't a matter of right or wrong but of whether it sounds natural, and for phrases that have already set into a fixed mold, copying the whole block is the fastest approach.

The part that causes more confusion isn't the two past forms but choosing the right verb in the first place. Vietnamese lumps a lot of actions into the words for "cut" and "trim," while English splits them apart depending on what you're cutting and how. The six lines below tease them apart.

The last line of the table is where mow veers off into a completely different meaning that many learners don't know. mow down means to strike down in large numbers, used for a vehicle plowing into a crowd or for guns firing relentlessly. The original image really is a mower passing through and everything falling flat, but when talking about people the sentence carries a very heavy tone. Don't use it for something light just because it has the word mow in it.

The pair mow and cut, on the other hand, are close enough to swap for each other in most sentences about grass. The small difference is that mow evokes a wide lawn and a machine, while cut is more neutral. British speakers say "cut the grass" more often, American speakers say "mow the lawn" more often, and both sides understand both.

Hearing mowed and mown in real speech

This is the part the conjugation table doesn't touch, and with mow it has a rare feature: both past forms are complete homophones of another common word. Not close, but identical. That means listening more carefully won't save you, because there's nothing to listen for more carefully.

mowed sounds exactly like mode. Both are /moʊd/, same diphthong, same final sound. In a passage about technology or about machine settings, "mode" is the word your ear will construct first. In a passage about yard work, "mowed" is the right one. Context is the only tool, and that's not a trick — that's exactly what native speakers are doing too.

mown sounds exactly like moan. Both are /moʊn/. "Newly mown hay" and "newly moaned hay" sound not one hair different, except that the second one is meaningless. This is where grammar saves you: after newly there has to be a participle describing the noun that follows.

The /d/ sound in mowed disappears completely before the. This is the worst part about this verb, because the combination you'll run into most is "mowed the lawn". The /d/ sound and the /ð/ sound place the tongue in almost the same spot, so they merge into a single sound, and the sentence comes out sounding almost like "mow-the lawn". The past-tense marker vanishes exactly in the phrase where it shows up most.

mowed and moved are closer than you'd think. In "moved", the /v/ sound sits between a diphthong and a /d/ sound, carries no stress, and so shrinks very heavily. Once it shrinks enough, "moved the lawn" and "mowed the lawn" end up separated by nothing more than a faint puff of air. Meaning won't save you here either, because "moved the lawn" also sounds a bit odd, but not odd enough to seem absurd to a beginner.

mown and known differ only in their initial consonant. Both are /oʊn/, and both initial consonants are nasal sounds. When the word before ends in a consonant, the front of mown gets swallowed, and "had mown the field" sounds very close to "had known the field". The second sentence also makes complete sense, so nothing sounds an alarm for the person transcribing.

The 've in I've gets swallowed by the m sound. "I've mowed it" said quickly turns into a single block that sounds almost like "aim-mode-it", and transcribers often reconstruct the beginning as "I'm". The result is "I'm mowed it", a grammatically wrong sentence that the ear still finds plausible because it matches the sound.

The table below is split into three columns: the sentence as written, the sentence as heard, and the sentence mis-transcribed. The middle column spells the fast-speech sound out as letters, standing in for dictionary phonetic symbols.

Looking at the third column, you can see two very different kinds of errors. The four lines with mode, moan and known are pure homophone errors: the ear catches every single sound correctly, missing nothing, and the transcription still comes out wrong because two different words happen to share exactly the same sound sequence. The moved line is a different type, an added-sound error: the transcriber hears a faint puff of air in the middle of the word and fills it in with a consonant that isn't actually there.

This distinction matters because the two kinds of errors need two different fixes. An added-sound error can be corrected by listening more carefully. A homophone error stays the same no matter how many times you listen, because the sound itself carries no information to tell the two apart. The only way through is to use context and use grammar — in other words, to use your head, not your ear.

When you sit down and do dictation practice on WELE, this stops being just theory. Once you've transcribed it, the scoring marks exactly where what you wrote diverges from the transcript. When the word marked wrong is mowed and you wrote mode, you get a piece of information that reading a verb-conjugation table can never give you: your ear is completely fine, the gap is that you haven't yet linked this word to the yard-work context. That's a gap in vocabulary, not in listening ability, and it's fixed by meeting the word often enough in its proper context.

For a low-frequency verb like mow, the fastest route is to meet it in real sentences rather than in a list. A podcast episode about the home, the yard, or suburban life will give you mowed and mown a few times within ten minutes, along with enough context for the two words to stick. If you want to understand why the ending sounds disappear — and that it's not because your listening is bad — the connected speech article explains the linking and sound-dropping mechanics across a whole sentence. And if you want to try it right away, the podcast library has transcripts to check against after each dictation.

Common phrases with mowed and mown

mow has exactly one true phrasal verb, mow down, so the table below is mostly fixed combinations — chunks of words that go together so consistently that you should learn the whole phrase as one unit. For a narrow verb like mow, this is actually the practical part, because you'll almost always meet it in the same handful of chunks. All of them are written in the past or participle form.

There's a detail worth noting in the get the lawn mowed line. This structure doesn't say who did the work, it only says the work is done. This is a very common pattern in everyday English, get something done, and mow is one of the verbs that slots into that pattern the most, along with cut, fix and clean. Catching the whole chunk "got the lawn mowed" by ear is a lot easier than piecing it together word by word.

The lawn mower line tests spelling. The noun for the machine is mower, with an -er ending, and you'll see it written as two words or as one. There's no noun "a lawn mow", and nobody says "a mowing machine" in everyday English either. This is the kind of mistake that tends to show up when a learner builds words by logic instead of remembering the ready-made chunk.

There's also a point about tense. "He mowed the lawn on Saturday" places the event at a closed point in time, in the manner of a retelling. "He has mowed the lawn" talks about a result that still holds right now: the yard is tidy, you don't need to remind him again. When listening, the marker that tells the two sentences apart is mainly the has that gets contracted at the front — exactly the part most likely to be lost in fast speech.

Mistakes Vietnamese learners often make with mow

Using mown as the simple past. "I mown the lawn yesterday" is a mistake specific to this verb, and it comes from hearing mown a few times and assuming it can substitute for mowed everywhere. The simple-past slot only accepts mowed. If the sentence has no have, has, had or be, the word you need is always mowed.

Using mowed after did. "Did he mowed the garden?" is a wrong sentence, even though it feels very logical to someone who just recalled the past-tense form. did already carries the past meaning, so the verb goes back to its base form: "Did he mow the garden?" This mistake tends to appear right when you're focused on remembering the -ed ending.

Transcribing mowed as mode or moved. This is the homophone error already discussed in the listening section, and it can't be fixed by listening more closely. What you should hold on to is context: if the sentence is talking about the yard, grass, the weekend, or the neighbors, the word you need is mowed, no matter what the sound seems to say.

Writing mower as mow when talking about the machine. The lawn-mowing machine is a lawn mower or a mower, with an -er ending. "The lawn mow is broken" is a wrong sentence. In the same family of mistakes is coining "a mowing machine", a phrase that's grammatically correct but that nobody uses.

Use mow down for something heavy. mow down isn't a stronger version of mow. It means to strike down in large numbers, used for a car plowing into a crowd or for guns firing indiscriminately, and the sentence carries a very heavy tone. "He mowed down the grass" sounds both wrong and strange, while "A car mowed down two children" is a grim news sentence.

Use mow for cutting, not for harvesting. mow means to cut grass or soft-stemmed plants down short, not to harvest for a crop. Wheat is harvested, rice is harvested, fruit is picked. Farmers do mow hay, but when the purpose is to gather grain, the verb changes.

One more thing that belongs to the category of "heard but misused in the wrong place." In American English, mowed is used as the participle noticeably more than mown, to the point that many Americans rarely write mown outside of fixed phrases like newly mown hay. That's a regional difference, not an error, so if you come across "has mowed," don't rush to correct it. There's only one spot no region can save you, and that's mown in the simple past slot.

Quick exercise

Eight sentences, fill in mow, mows, mowed, mown or mowing. Where both mowed and mown work, the answer will say so clearly. Do them all before looking below.

1. He ______ the lawn last Saturday before it rained.
2. Did she ______ the back garden as well?
3. The verge has been ______ since Tuesday.
4. We walked barefoot across the newly ______ grass.
5. He was ______ the field when the storm came in.
6. A van ______ down two cyclists at the junction.
7. They have ______ that strip twice this month.
8. The lawn ______ has not started since March.

Answers: 1. mowed. 2. mow. 3. mown or mowed. 4. mown. 5. mowing. 6. mowed. 7. mowed or mown. 8. mower.

Sentences 2 and 8 are the two worth pausing on. Sentence 2 has did in front of it, so the verb goes back to the base form, and it's the one most often gotten wrong because it sits right after a sentence that needs mowed. Sentence 8 isn't a verb-conjugation exercise at all — it's checking whether you remember that the machine is a mower, not mow. If you filled in mowed for sentence 8, the last part of the mistakes section is worth rereading.

Frequently asked questions

What is the past tense of mow?

The simple past of mow is mowed, and only mowed. The past participle is mowed or mown, both correct. When the participle sits right before a noun, the form usually used is mown.

Mowed or mown, which one to use?

Look at whether there's an auxiliary verb in front of it. Nothing in front means it's always mowed. Have, has, had or be in front means both work, with American English leaning toward mowed. In front of a noun, as in newly mown grass, use mown.

Can mown be used as the simple past?

No. "I mown the lawn" is an incorrect sentence, and this is a mistake specific to this verb. The simple-past slot only accepts mowed, even though the participle slot accepts both.

Why does mowed get heard or transcribed as mode?

Because the two words are complete homophones, both /moʊd/. There's nothing in the sound to tell them apart, even when the speaker pronounces it very clearly. The thing to hold on to is the sentence's context and the part of speech that position calls for.

What does mow down mean?

To strike down in large numbers, used for a vehicle plowing into people or for guns firing indiscriminately. It has nothing to do with cutting grass even though it shares the original image, and it carries a very heavy tone, so don't use it for something light.

How do you practice a less-common verb like mow so it sticks?

Encounter it in real sentences rather than in a list, because the hard part of mow is context, not rules. A podcast episode about homes or suburban life will give you mowed and mown a few times along with enough context for the two words to anchor themselves. The listening level test gives you a benchmark for where you stand before picking an episode.

The form table for mow takes you twenty seconds to read, because it has only one slot worth paying attention to. The rest — the fact that mowed lines up exactly with mode and mown lines up exactly with moan — isn't something your ear can solve, and that's precisely why it only sinks in when you slip while transcribing and then see the correct word sitting right next to what you just wrote. Pick a short episode and try dictation practice on a passage that has mowed or mown, then go back to the table at the top of this article and see if the transcription column still feels dry.