Explaining causes, results, and purpose in Japanese

Level B1

Explaining causes, results, and purpose in Japanese

English often uses “because of,” “in order to,” and “so that” to connect reasons and aims to events. Japanese expresses these relationships differently: “で” can mark a cause, “ために” can express a purpose, and “ように” can describe a desired result. The examples also show that an intended result may not happen.

Words for causes and purpose

“で” can mark a cause, “ために” expresses a purpose with an action, and “ように” expresses a desired state or outcome. These do not map one-to-one onto the English phrases: Japanese chooses a construction based on what kind of cause or purpose the speaker means.

Give a cause with a noun

A noun marked with “で” can show the cause of an event, as in “ドアの故障で電車が遅れて.” In the snow example, “雪のため” gives the cause. Japanese has several ways to express “because of,” so the form depends on the expression and the sentence. The first example uses polite language; the second is informal.

原因を表す名詞で起きたこと。

Connect a cause to its consequence

Japanese can give the cause first, then describe the situation and what happened as a result, without a separate word for English “so.” In “雪のため道路が通行止めでしたので、電車で行きました,” the snow closed the road, so the speaker went by train. In “ドアの故障で電車が遅れて、会議に間に合わなかった,” the train delay caused the speaker to miss the meeting. The first example is polite; the second is informal.

原因を表す名詞で影響を受けた状況と、その結果。

Give a purpose with “ために”

Use a volitional verb in its dictionary form before “ために” to express an action someone intends to carry out. The purpose action and the main action normally have the same subject: “時間を節約するために、会議をオンラインにしました.” English often places “in order to” after the main action; Japanese normally places the purpose clause first. The first example is polite, while the evening-class and seat examples use informal endings. The seat example shows that the purpose may not be achieved.

目的を表す動詞の辞書形ために、その目的で行うこと。

Give a desired outcome with “ように”

Place a clause before “ように” to express a desired possibility or state, then give the action or request intended to bring it about. This construction often uses a potential form such as “ついていける,” rather than a verb expressing a directly controlled action. English “so that” does not determine the Japanese construction by itself. The two clauses can have the same subject or different subjects. “みんなが話についていけるように、もう少しゆっくり話していただけますか” asks someone to speak more slowly so everyone can follow. “話していただけますか” is a respectful, polite request; “送ってくれる？” is informal. The map example uses polite endings and says that the desired result still failed.

実現してほしい状態を表す節（可能形など）ように、そのために行うことや頼むこと。

Separate an intended aim from the outcome

A phrase with “ために” or “ように” describes an aim; it does not say the aim succeeded. “席を取るために早く出たけど、もう会場はいっぱいだった” says the speaker left early to get a seat, but the venue was already full. In “彼女がオフィスにたどり着けるように地図を送ったんですが、それでも道に迷ってしまいました,” the map was sent so she could find the office, yet she still got lost.

Ask why someone missed a talk

The dialogue uses informal speech. “講演、どうして来られなかったの？” asks why the person could not come. The reply gives a purpose with “ために” and the failed result with “けど.” “話についていけるように、ノート送ってくれる？” is an informal request using “ように.” “もちろん。今夜送るね” agrees and promises to send the notes tonight. Japanese shows politeness through verb endings and request forms, rather than by changing a pronoun for “you.”

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