Japanese Verb Past Tense – (in Romaji) (Pt. 1)

If you’re like me and mostly want to speak Japanese, not read or write it, this post is for you. Everything here is written in romaji (the Romanized version of Japanese). If you’re interested in learning hiragana, katakana, or kanji, I recommend using other resources, or even asking ChatGPT for a custom plan.
(Feel free to check out the r/languagelearning and r/LearnJapanese subreddits for extra resources or recommendations).

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⚠️ There will be three parts to past tense, this first part will cover only the informal and formal past tenses, -ta form.

There are two forms:

  1. Informal Past Tense
  2. Formal Past Tense

Example:

  • Informal: Sushi wo tabeta – I ate sushi
  • Formal: Sushi wo tabemashita – I ate sushi (polite)

If you haven’t yet studied the -te form or -masu form, I highly recommend reading those first:

πŸ‘‰ Japanese Request Form – Te Form
πŸ‘‰ Japanese Formal Form – Masu Form


1. πŸ—£οΈ Informal Past Tense (Plain Form)

This form is used in casual conversations with friends, family, or people your age. It’s very simple once you know how to make the -te form.

🧠 How to Conjugate:

  1. Take the verb
  2. Conjugate it to -te form
  3. Change -te β†’ -ta
    (or -de β†’ -da for some verbs)

πŸ’‘ Think of this like flipping a light switch from present to past.

πŸ”Έ Examples:

Verb–Te FormPast TenseMeaning
taberutabetetabetaate
mirumitemitasaw/watched
matsumattemattawaited
iuitteittasaid
narunattenattabecame
yomuyondeyondaread
asobuasondeasondaplayed
shinushindeshindadied
isoguisoideisoidahurried
osuoshiteoshitapushed
surushiteshitadid (irregular)
kurukitekitacame (irregular)

πŸ“ Informal Past Tense Example Sentences:

  1. Kino sushi wo tabeta. – I ate sushi yesterday.
  2. Eiga wo mita. – I watched a movie.
  3. Tomodachi to asonda. – I hung out with a friend.
  4. Gakkou ni itta. – I went to school.
  5. Hon wo yonda. – I read a book.
  6. Hayaku isoida. – I hurried.

2. πŸ’Ό Formal Past Tense (Masu β†’ Mashita)

Use this when speaking politely to:

  • Strangers
  • Teachers
  • Superiors
  • Customers or in public settings

🧠 How to Conjugate:

Take the -masu form (polite present), and change -masu β†’ -mashita to make it past tense.

πŸ” Think of this as going from:
Base Verb β†’ Masu Form β†’ Mashita (Polite Past)


πŸ”Έ Examples:

Base Verb–Masu FormPast TenseMeaning
taberutabemasutabemashitaate
mirumimasumimashitawatched
matsumachimasumachimashitawaited
kakukakimasukakimashitawrote
kangaerukangaemasukangaemashitathought
kesukeshimasukeshimashitaerased
kaerukaerimasukaerimashitawent home
ikuikimasuikimashitawent
kikukikimasukikimashitalistened
nomunomimasunomimashitadrank

πŸ“ Formal Past Tense Example Sentence :

  1. Kino, sushi wo tabemashita. – I ate sushi yesterday.
  2. Eigakan de eiga wo mimashita. – I watched a movie at the theater.
  3. Nihon ni ikimashita. – I went to Japan.
  4. Tomodachi to hanashimashita. – I talked with a friend.
  5. Kurasu de nihongo wo benkyou shimashita. – I studied Japanese in class.
  6. Denki wo keshimashita. – I turned off the light.

βœ… Summary

Form TypeExample VerbPast Tense
Informaltaberutabeta
Formaltaberutabemashita
suru (Irregular)surushita / shimashita
kuru (Irregular)kurukita / kimashita

πŸ’‘ Tip: The informal form is more common in anime, texting, and casual conversation, while the formal form is better for class, jobs, or respectful situations.


πŸ’¬ Want to Practice?

Use ChatGPT to:

  • Conjugate new verbs for you
  • Quiz you on plain vs formal past
  • Give you more example sentences based on your level

🧱 Why I Learn This Way

While I continue learning Japanese and other languages, I also make money online through beermoney apps. It’s not much, but it helps me feel like I’m turning my free time into something more productive and fun.

πŸ‘‡ Check out my glossaries below


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Curious how much money you can realistically make online from surveys, games, ads, and small tasks? Check out my Beermoney Glossary page, where I break down every app and site I’ve tried with videos, payment proof, and my personal experiences. I always recommend doing beermoney while watching shows, anime, gaming, or handling small tasks around the house.
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πŸ‘‰ Language progress

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