Forget in the Past Tense: Forgot, Forgotten, and Where It Splits from the Get Family

You're transcribing a dictation of a conversation in the kitchen. The speaker lets out a sentence, you write down "I forgot a bring it," then look back and see there's one extra word but don't know which one to drop. The real sentence is "I forgot to bring it." Quick answer first: the simple past of forget is forgot, and the past participle is forgotten. The V-ing form is forgetting with two t's, and the third person singular is forgets.

The hard part sits in two places. First, forget belongs to the get family, and get is a verb notorious for having two participle forms depending on whether it's British or American English. A lot of people assume forget works the same way and write "I have forgot." That's not how it is, and it's worth clearing up once and for all. Second, when spoken quickly the phrase forgot to gets worn down into a single block, the /t/ sound sitting between two vowels turns into a quick tongue tap, and the word to vanishes from your ear.

This article goes through that whole chain: the table of forget's forms, its real relationship with get and why the t doubles in forgetting, the pair forget to do versus forget doing where changing one word changes the meaning completely, the spot where Vietnamese leads you to use forget instead of leave, and — the part that matters most for listening practice — how these three forms actually sound at normal speaking speed.

• The form table of forget, and its real relationship with the get family
• When to use forgot, when to use forgotten
• Hearing forgot and forgotten in real spoken sentences
• Common phrases with forgot and forgotten
• Mistakes Vietnamese speakers often make with forget
• Quick exercises
• Frequently asked questions

The form table of forget, and its real relationship with the get family

Five forms, laid out neatly in one table. The pronunciation follows American English as the standard, with British forms noted only when they differ clearly.

Form	Word	Pronunciation	Short example
Base form (V1)	forget	/fərˈɡet/ (British: /fəˈɡet/)	I always forget his name.
Third person singular	forgets	/fərˈɡets/	She forgets nothing.
Simple past (V2)	forgot	/fərˈɡɑːt/ (British: /fəˈɡɒt/)	I forgot my keys.
Past participle (V3)	forgotten	/fərˈɡɑːtn/ (British: /fəˈɡɒtn/)	He has forgotten us.
Present participle	forgetting	/fərˈɡetɪŋ/	You are forgetting something.

Forget really is related to get. It's get plus an old prefix for- carrying a sense of negation or loss, the same pattern as forgive and forbid. Because they're related, it conjugates in exactly the same mold as get: the /e/ vowel in the base form changes to /ɑː/ in the past tense, then the participle adds the -en ending. The same mold also produces beget becoming begot and begotten, a word you now only run into in archaic texts.

But there's exactly one point where forget splits off from get, and that's the reason so many people get it wrong in writing. Get has two participle forms: gotten used in American English, got used in British English. Forget doesn't work that way. Forgotten is the standard participle form in both British and American English. A British speaker says "I have got a car" but still says "I have forgotten her name." The gotten-versus-got rule doesn't carry over to forget, and if you reason your way there from get, you'll reason wrong.

The second detail is the doubling of the t in forgetting. The rule here is: when the stem ends in a vowel plus a consonant, and the stress falls on the last syllable, the final consonant doubles before -ing or -ed. Forget is pronounced for-GET with the stress on the second syllable, so the t doubles to give forgetting. Compare that with visit, pronounced VIS-it with the stress on the first syllable, so it stays visiting with a single t. The same rule as forgetting applies to beginning, preferring, admitting.

A few verbs worth reading alongside this one to see these lines clearly: the past tense of get is where the gotten-versus-got rule actually applies, and once you've read it you won't misapply that rule to forget anymore; the past tense of leave is the verb you need to use in place of forget whenever the sentence has a location in it; the past tense of begin shares the exact same final-consonant-doubling rule seen in beginning; and the past tense of speak gives you a participle that also ends in -en but with the vowel shifting in a different direction. To see the bigger picture, read the article on English grammar, where the tenses are tied to each verb group.

When to use forgot, when to use forgotten

The simplest rule: forgot stands alone, forgotten never stands alone. Forgot is the simple past, it acts as the main verb of the sentence by itself. Forgotten is a participle, it always needs have, has, or had in front of it, or else stands as an adjective inside a noun phrase.

Sentence	Correct or incorrect	Why
I forgot my wallet this morning.	Correct	Simple past, with a clear time marker
I have forgotten my wallet this morning.	Incorrect	Present perfect doesn't go with a specific past time marker
She has forgotten her password again.	Correct	Forgotten follows has, the consequence still carries into the present
She forgotten her password again.	Incorrect	Forgotten is missing its auxiliary verb
He has forgot how it works.	Incorrect	After has there must be the participle forgotten
Did you forget to lock the door?	Correct	After did comes the base form forget, not forgot

The part that really causes confusion isn't forgot versus forgotten, it's forget to do versus forget doing. Both structures are grammatically correct, and they say two nearly opposite things. Vietnamese lumps both into a single word, quên, so you get no signal at all for which one to pick.

Forget to do means you were supposed to do that thing but forgot, so you didn't do it. Forget doing means the thing already happened, but you don't remember ever doing it. The six pairs below make that gap clear.

Sentence	Actual meaning
I forgot to lock the door.	The door isn't locked, because you forgot to lock it
I forgot locking the door.	The door is already locked, you just don't remember locking it
She forgot to call him.	The call never happened
She had forgotten calling him.	She did call him, but it slipped out of her memory
Don't forget to send the file.	The file hasn't been sent yet, this is a reminder to send it
I will never forget meeting her.	The meeting really happened and will always be remembered

There's one practical pattern worth remembering from the table above. Forget doing almost always shows up in negative sentences or sentences about memories, like "I will never forget" or "I had forgotten." In ordinary affirmative sentences, you use forget to do far more often. If you're torn and your sentence is a reminder, choosing to is the right call.

There's one more boundary that Vietnamese wipes out completely: forget versus leave. English doesn't let you say you forgot something in a place using the verb forget. When the sentence includes a location, the required verb is leave. "I left my phone at home" is the correct sentence, while "I forgot my phone at home" is the sentence learners write. You can only use forget when there's no location mentioned: "I forgot my phone" is a perfectly normal sentence.

Hearing forgot and forgotten in real spoken sentences

This is the part you won't find in any verb conjugation table, and it's also the part that decides whether you transcribe the right number of words or not. Forget is a three-syllable word on paper, but only one syllable carries the stress, and the other two get worn down hard.

The first syllable for- almost vanishes entirely. The stress in all three forms falls on the second syllable, so the front end shrinks down to an extremely short schwa sound. "I forgot" comes out as "ai f'got," sometimes reduced to nothing more than an /f/ sound stuck onto the word before it. If you're listening for three evenly balanced syllables, this word slips straight past your ear.

The phrase forgot to merges into a single block, and the word to disappears. The final /t/ sound of forgot runs straight into to, and in American English it turns into a very quick tongue tap. "I forgot to bring it" comes out as "ai f'gadda bring it." This is exactly where the mis-transcription "I forgot a bring it" comes from: your ear catches an /ə/ sound in the middle but doesn't recognize it as the word to.

Forgotten ends with an /n/ that forms its own syllable. There's no vowel between the t and the n. The tongue holds its position and the air escapes through the nose, coming out as "f'gah-tn". In American speech that t often turns into a glottal catch, so you hear something closer to "f'gah-'n". Learners who wait to hear three clean, distinct syllables won't catch this word.

Have and has before forgotten collapse into a single /v/ or /z/ sound. "I have forgotten" in real speech becomes "I've forgotten", and the 've part is just a /v/ stuck onto the end of the subject. Miss it and you write down "I forgotten" — ungrammatical — or you unconsciously correct it to "I forgot" and lose the tense of the sentence entirely.

Forget and forgot differ by exactly one vowel. Both start with the same blurred "f'g" cluster, and the entire difference sits in the stressed vowel: /e/ as in bed for the present, a broader /ɑː/ for the past. In a fast-running sentence that gap is razor-thin, and this is the point where the tense of a sentence flips most easily.

Don't forget to fuses into a single four-beat chunk. This verb's most familiar reminder phrase comes out as "down f'gedda", with the negation packed into an /n/ so short it's almost not there. Miss that part and you write down advice with the exact opposite meaning.

The three things in the table below sit side by side: the original sentence, the sound it makes when spoken fast, and what learners commonly mistranscribe it as. What's written in the middle column is the sound reaching your ear, not phonetic notation.

Actual sentence	Sounds like	Learners often write it as
I forgot to bring the charger.	ai f'gadda bring thuh charger	I forgot a bring the charger.
Don't forget to sign it.	down f'gedda sign it	Do forget to sign it.
I've forgotten her name already.	aiv f'gah-'n her name olredi	I forgotten her name already.
He forgets things all the time.	hi f'gets things ol thuh time	He forgot things all the time.
You are forgetting one thing.	yer f'gedin wun thing	You forgot one thing.
She had forgotten about it.	shid f'gah-'n abaudit	She has forgotten about it.

The third column shows the errors falling into three types. The first type is to worn down into a single /ə/ sound and then transcribed as the article a, and this is an error specific to verbs ending in /t/ or /d/ that are followed by to. The second type is dropping the unstressed function word in front — 've, 's, 'd — and the result is always a wrong tense. The third type is the stressed vowel being misheard, forget becoming forgot or the other way around.

This error-correction loop happens very concretely when you do dictation practice on WELE. You transcribe the sentence you just heard, the scoring dot lands exactly on the word that's off, and when the word marked wrong is to but you wrote a, you get a piece of information that reading a verb conjugation table never gives you: your ear did pick up a sound there, it just assigned it to the wrong word. That's a completely different kind of error from hearing nothing at all, and the fix for it is different too.

The real point where memory forms is the moment you see exactly where you transcribed something wrong. Ten minutes after reading the five-line table at the start of this article, you'll still know that the past tense of forget is forgot, but your ear still has no idea what the chunk forgot to actually sounds like. Miss it once in transcription and then hear it corrected at the exact spot you missed, and the next time you encounter it, your ear already has a marker to go on. For worn-down chunks like forgot to or don't forget to, this is pretty much the only way.

If you want to understand why these sounds disappear — and it's not that your listening is poor — the article on connected speech explains the mechanics of sound-dropping and linking across a whole sentence, not just with forget. To apply it straight away to real sentences, open the podcast library — every episode comes with a transcript to check yourself against after you transcribe.

Common phrases with forgot and forgotten

Forget doesn't spawn many phrasal verbs — it pretty much only pairs with about. To make up for that, it sits inside a dense set of fixed phrases in conversation. The twelve lines below are the ones you'll run into most, written in the past or participle form so you get used to seeing them that way.

Phrase	Meaning	Example
forget about	Forget something entirely, let it go	I forgot about the meeting completely.
forgot all about	Forgot completely, more emphatic	She forgot all about the deadline.
forgot to mention	Forgot to say, forgot to bring up	He forgot to mention the change in price.
never forget	Never forget	I will never forget that evening.
forget it	Never mind, drop it, it's not needed	Forget it, I will do it myself.
forgive and forget	Forgive and move on	They forgave and forgot within a week.
forgotten password	Password you've forgotten	I clicked the forgotten password link twice.
long forgotten	Forgotten long ago	She found a long forgotten box of photos.
easily forgotten	Easy to forget	The rule is simple but easily forgotten.
forget yourself	Forget who you are, behave inappropriately	He forgot himself and raised his voice.
completely forgot	Forgot entirely	Sorry, I completely forgot to reply.
not forgetting	Not to mention, also worth noting	The rent, the bills, not forgetting the fees.

There's a detail worth noting in the phrase forget it. It isn't about memory at all. Depending on tone of voice, it carries three different meanings: it's not a big deal, drop it, we don't need it anymore, or that will never happen. "Forget it, it is only a coffee" is the first meaning. "You want the car for a week? Forget it" is the third. When listening, the meaning sits in the rise and fall of the voice, not in the words themselves.

The second detail sits in the line forgotten password. This is a case where the participle form is used as an adjective in front of a noun, and you'll run into it most often on login screens. That's also why forgotten is the form your eyes are more used to, while forgot is the form your ears hear more. That mismatch between the two channels is exactly why so many people write "I have forgot".

Mistakes Vietnamese speakers commonly make with forget

Forgetted and forgotted. This is a mistake from the reflex of adding -ed to every verb. Forget never conjugates regularly. There's only forgot for the simple past and forgotten for the participle, no other form exists.

Did you forgot. After did it's always the same rule — did carries the tense and the verb stays in its base form. The correct sentence is "Did you forget to lock it?". This mistake tends to show up exactly when you're concentrating hard on remembering that the past tense of forget is forgot, and remembering it too well.

I forgot my bag at home. This is the most common mistake in the whole group, because Vietnamese says "quên đồ ở nhà" very naturally. English splits this into two separate verbs: use leave when there's a location, use forget when there isn't. The correct sentence is "I left my bag at home", or "I forgot my bag" if you're not mentioning home.

I have forgot. This sentence isn't standard, and here's the thing worth noting: you will still hear it from native speakers in casual speech in some regions. Hearing it and being allowed to use it are two separate matters. In an exam, in a work email, in any written text, the only accepted participle form is forgotten, and that's true in both British and American English. Don't reason your way from get having two forms, got and gotten, over to forget.

Using forget doing when you mean something hasn't been done yet. "I forgot calling her" means you already called her but don't remember doing it. If you mean you haven't called her yet, the sentence has to be "I forgot to call her". This mistake makes the reader understand the situation as the complete opposite of what happened, and since it isn't grammatically wrong, nobody will catch it and correct you.

Forget standing bare in an apology. "Sorry, I forget" is what learners write when they mean to say they've forgotten. The present tense here turns the sentence into a statement that you forget things in general. What you need is "Sorry, I forgot". There is one genuine exception: native speakers do say "I forget his name" in the present tense when they mean they can't recall it right this moment. That's a usage specific to being stuck recalling something right now, not for saying you forgot to do something yesterday.

Quick exercise

Eight sentences — fill in forget, forgets, forgot, forgotten, or left. Do all of them first; checking your answers comes after.

1. I ______ to reply to your email yesterday.
2. She has ______ her password for the third time.
3. Did you ______ to lock the back door?
4. I ______ my umbrella at the office, can you grab it?
5. He never ______ a face, only names.
6. By the time we met again, she had ______ my name.
7. Don't ______ to send the invoice before five.
8. I will never ______ the day we moved in.

Answers: 1. forgot. 2. forgotten. 3. forget. 4. left. 5. forgets. 6. forgotten. 7. forget. 8. forget.

You should look closely at sentences 3 and 4. Sentence 3 has did in front of it, so the verb goes back to the bare infinitive, and this is where a lot of people fill in forgot because they just finished reading the conjugation table. Sentence 4 has at the office, meaning there's a location, so the verb has to be left, not forgot. If you got these two wrong, the second part of the article is worth reading again.

Frequently asked questions

What is the past tense of forget?

The simple past of forget is forgot, the past participle is forgotten. These two forms can't be swapped for each other: forgot acts as the main verb in a simple past sentence, while forgotten always comes after have, has, or had.

Forgot or forgotten, which one do you use?

Look at what's in front of it — is there an auxiliary verb or not. If there's have, has, had, use forgotten. If nothing comes before it, use forgot. "I forgot" is correct, "I have forgotten" is correct, "I have forgot" is wrong, "I forgotten" is wrong.

Is "I have forgot" correct?

Not by the standard. You'll hear it in casual speech in some regions, but the only participle form accepted in writing and in exams is forgotten, in both British and American English. The got versus gotten rule for the verb get doesn't apply to forget.

What's the difference between forget to do and forget doing?

Forget to do means the thing hasn't happened yet because you forgot to do it. Forget doing means the thing already happened but you don't remember it. "I forgot to lock the door" means the door isn't locked, "I forgot locking the door" means the door is already locked.

Why does forgetting have two t's?

Because the stress in forget falls on the last syllable, and the spelling rule requires doubling the final consonant in that case. The same rule applies to beginning, admitting, preferring. Compare that with visiting, which has only one t because the stress in visit falls on the first syllable.

Why does forgot to get heard and transcribed as forgot a?

Because the final /t/ sound of forgot sits right before the word to, and in an American accent it turns into a very quick tongue tap, making the whole phrase come out as a single block like "f'gadda". Your ear picks up a short sound in the middle but wrongly attributes it to the article a. The listening level test gives you a benchmark to compare against after a few weeks of practice.

You can read through the forget conjugation table in twenty seconds, and that's the easiest part of this page. The rest of it — the way the first syllable disappears and the phrase forgot to gets worn down into a single sound — only really sinks in once you mistranscribe it and see exactly where you slipped. Pick a short clip and try dictation practice on a passage with forgot or forgotten, then come back to the table at the top of the article and see if it still looks so obvious.