文法の説明

N4 レッスン 6: 4/16

せる・させる (Causative)

To make/let/have (somebody do something)

either に or を can mark the doer

使い方・接続

Examples:
[る1]Verb() + せる
[る5]Verb → (すわ) + せる
[う]Verb(うた) + せる
[く]Verb(ある) + せる
[す]Verb(はな) + せる
[つ]Verb() + せる
[ぬ]Verb() + せる
[ぶ]Verb() + せる
[む]Verb(やす) + せる
[ぐ]Verb(およ) + せる

Exceptions:
するさせる
くるこさせる

詳細

  • 使用域

    Standard

  • 使用域

    一般

「Verb[せる・させる]」の情報

In order to express that someone was 'made to do', or 'let do' something, the auxiliary verbs せる and させる will be used. The meaning that せる and させる will convey (when attached to a verb) is called 使役(しえき) (causative, employment, or using) in Japanese.
A common misconception is that せる and させる are standard conjugations of each verb. However, these auxiliary verbs should be thought of as having their own meaning, in a similar way to how たい, ない, , です, and other auxiliaries each have their own meanings.
In order to use these grammar structures, remove the る from る-Verbs, and then add させる. For う-Verbs, change the last kana to the あ sound kana from within the same column (except for う, which becomes わ), and then add せる (る becomes ら, む becomes ま, く becomes か, etc.).
  • 息子(むすこ)野菜(やさい)()させる
    I make my son eat vegetables.
  • 友達(ともだち)にトマト(そだ)させる
    I make my friend grow tomatoes.
  • 忘年会(ぼうねんかい)先輩(せんぱい)たち後輩(こうはい)(うた)(うた)わせた
    At the end of year party, the seniors made the juniors sing a song.
  • 友達(ともだち)(わたし)携帯(けいたい)(こわ)したので(あたら)()わせる
    Since my friend broke my phone, I will make them buy me a new one.
As usual, する and () have special conjugation rules. する will be replaced completely by させる (in a similar way to how できる completely replaces する in the 'potential' form). () will become ()させる.
  • (いや)仕事(しごと)後輩(こうはい)させる
    I let my juniors do the work that I don't want to do.
  • (おや)心配(しんぱい)させることしてはいけない
    You should not do anything that would make your parents worry.
  • 夜遅(よるおそ)くに会社(かいしゃ)()させるのはよくない
    It is not good to make people come to the company late at night.
  • (いぬ)()、こっちに()させる
    To call the dog and make it come to you.
Caution
With causative, either , or can mark the doer of the action that せる, or させる is linked to (not が). This is because the actual 'doer' of the action is considered to be the person that is making/letting someone perform that action. will usually imply that someone was 'let' do something, while implies 'make'.
  • 誰か心配(しんぱい)させる
    To let someone worry about you.
  • 誰か心配(しんぱい)させる
    To make someone worry about you.
Fun Fact
Because the actual 'doer' in causative verb sentences will be marked with (as is always the case), the literal translation of せる and させる is closer to the following:
(A) が (B) 楽しませる - For (A) to cause fun 'in' (B).
(A) が (B) 楽しませる - For (A) to cause fun 'through' (B).
It is these standard meanings of the particles (a location) and (a target) that will create the 'let', or 'make' nuance when using せる, or させる.

例文

  • 学校(がっこう)()きたくない()()かせる

    (Someone) makes the kid who doesn't want to go to school go.

    • 友達(ともだち)(あさ)()()こして、(かえ)らせた

      I woke my friend up at four in the morning and made him go home.

      • (わたし)生徒(せいと)勉強(べんきょう)すること(たの)しませます

        I make students enjoy studying.

        • どこか()かせる(たの)しめないでしょう

          If (you) make (someone) go somewhere, they won't have fun.

          • (にい)ちゃん(いもうと)()かせた

            My older brother made my younger sister cry.

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            「Verb[せる・させる]」に関する文法ディスカッション

            最近の返信 (合計9件)

            • rexd

              rexd

              I had the same question. Bunpro is really not clear at all what answer it wants for these must/mustn’t questions. The hints for this question don’t say anything about which form to use – it just says " A grammar point that is used when someone either lets or makes someone do (A)." It sucks to keep getting this wrong because even though なければ is grammatical, Bunpro wants you to only enter なきゃ, without telling you that. D:

            • Asher

              Asher

              Thanks for letting us know about this! I have just added ‘Colloquial’ to the tense information for this question. Ideally all questions should tell you in the tense information if a colloquial form is expected, but it appears that this information was missing from this question! Sorry for the inconvenience

            • rexd

              rexd

              Oh, awesome! Thanks for that.

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