Conjugation

約束する

やくそくするyakusoku suru

promise

Irregular verb, group 3, noun + する.

Conjugated like する, 勉強する, 注文する, 沸騰する, 生活する, 習得する

  • Like する

    約束する conjugates like する: only する changes, and its potential is 約束できる.

Newbie

The polite forms to talk about now, the future, and the past, and the te-form of requests.

  1. Polite present · -masu

    What you do, usually or soon, said politely. Japanese has one form for the present and the future.

    1. affirmative約束しますやくそくしますyakusoku shimasu
    2. negative約束しませんやくそくしませんyakusoku shimasen

  2. Polite past · -mashita

    What you did, or did not do, said politely.

    1. affirmative約束しましたやくそくしましたyakusoku shimashita
    2. negative約束しませんでしたやくそくしませんでしたyakusoku shimasen deshita

  3. Te-form

    Links actions (and then…), and with ください asks politely.

    1. 約束してやくそくしてyakusoku shite
    2. request約束してくださいやくそくしてくださいyakusoku shite kudasai

  4. Let’s · -mashō

    To suggest doing something together: let’s…

    1. 約束しましょうやくそくしましょうyakusoku shimashō

  5. Wanting to · -tai

    What you want to do. Add です to be polite.

    1. affirmative約束したいやくそくしたいyakusoku shitai
    2. negative約束したくないやくそくしたくないyakusoku shitakunai
BeginnerThe plain forms of everyday speech, what is going on, what you can do, conditions, and the passive.Plain present · dictionary form · Plain past · -ta · Ongoing · -te iru · Potential · If, when · -tara · PassiveAlso show the Beginner forms (6)

  1. Plain present · dictionary form

    Between friends and family, and before a noun or many phrases. It also says the future.

    1. affirmative約束するやくそくするyakusoku suru
    2. negative約束しないやくそくしないyakusoku shinai

  2. Plain past · -ta

    The past between friends and family, and before a noun.

    1. affirmative約束したやくそくしたyakusoku shita
    2. negative約束しなかったやくそくしなかったyakusoku shinakatta

  3. Ongoing · -te iru

    What is going on now, a habit, or a state that lasts: 結婚している, to be married.

    1. plain約束しているやくそくしているyakusoku shite iru
    2. polite約束していますやくそくしていますyakusoku shite imasu

  4. Potential

    What you can do. Its object often takes が: 日本語が話せる.

    1. plain約束できるやくそくできるyakusoku dekiru
    2. polite約束できますやくそくできますyakusoku dekimasu

  5. If, when · -tara

    If or once something happens, and what you found when it did.

    1. 約束したらやくそくしたらyakusoku shitara

  6. Passive

    What is done to someone, often to their regret: に marks who does it. It is also a respectful way to speak of others.

    1. plain約束されるやくそくされるyakusoku sareru
    2. polite約束されますやくそくされますyakusoku saremasu
IntermediateIntentions, orders, conditions, making someone do something, and the verbs of respect and modesty.Volitional · -ō, -yō · Command · Condition · -ba · Causative · Causative passiveAlso show the Intermediate forms (5)

  1. Volitional · -ō, -yō

    Let’s, between friends; with と思う, what you intend to do.

    1. 約束しようやくそくしようyakusoku shiyō

  2. Command

    A blunt order or ban (〜な), heard in sports, on signs, and between men. Politely, say 〜てください.

    1. order約束しろやくそくしろyakusoku shiro
    2. ban約束するなやくそくするなyakusoku suru na

  3. Condition · -ba

    If…: the condition for what follows. In the negative, it also says what you must do: 〜なければならない.

    1. affirmative約束すればやくそくすればyakusoku sureba
    2. negative約束しなければやくそくしなければyakusoku shinakereba

  4. Causative

    Making or letting someone do something: に or を marks who does it.

    1. plain約束させるやくそくさせるyakusoku saseru
    2. polite約束させますやくそくさせますyakusoku sasemasu

  5. Causative passive

    Being made to do something you did not want to. In speech, godan verbs often shorten -aserareru to -asareru.

    1. plain約束させられるやくそくさせられるyakusoku saserareru
    2. polite約束させられますやくそくさせられますyakusoku saseraremasu