目錄
In Japanese grammar, both 「〜ために」 and 「〜ように」 are often translated into Chinese as 「為了」 (“in order to” or “for the purpose of”), which makes it easy for beginners to assume that the two patterns are interchangeable. As a result, learners often produce sentences that Japanese speakers can understand but that sound slightly off or unnatural in conversation or writing. Both grammar patterns are extremely useful in everyday communication, and there is actually a fairly clear dividing line between them: whether the verb before the pattern describes something that can be controlled through the speaker’s own volition.
What’s the difference between 「ために」 and 「ように」? Why are these two Japanese grammar patterns so easy to confuse?
Japanese learners often encounter 「ために＝in order to」 at the beginner level and later learn at the intermediate level that 「ように」 can also be translated as “in order to.” As a result, the two patterns can start to feel like synonyms that can be freely substituted for one another. In reality, although both express purpose, the underlying logic of their nuances is completely different. 「〜ために」 carries a strong sense of intention—“I’m going to achieve this through my own effort”—whereas 「〜ように」 leans more toward a wish or hope that something will develop in a certain direction. When traveling, for example, if you want to tell a Japanese person “in order to buy a limited-edition item” or “in order to be able to understand the tour guide,” choosing the wrong pattern will not necessarily make the sentence incomprehensible, but it can make it sound slightly unnatural. This is also one reason the distinction frequently appears in intermediate- and advanced-level JLPT questions.
Basic usage and conjugation rules for 「〜ために」
The way 「〜ために」 attaches is fairly fixed: it follows the dictionary form (plain form) of a verb or 「noun＋の」, and the clause after it describes an action. The overall structure is “purpose (ために)＋action.”
| What it follows | Pattern | Example |
| Verb | Dictionary form＋ために | 合格するために |
| Noun | Noun＋の＋ために | 試験のために |
Usage ① of 「〜ために」｜Expressing a goal that is actively pursued through effort
- Example: 試験に合格するために、毎日三時間勉強します。
Kana: しけんにごうかくするために、まいにちさんじかんべんきょうします。
Translation: I study for three hours every day in order to pass the exam.
This sentence emphasizes the speaker’s active effort. The action in the second clause is a concrete action performed to achieve the goal in the first clause, and the subjects of the two clauses must be the same person. - Example: 日本に留学するために、お金を貯めています。
Kana: にほんにりゅうがくするために、おかねをためています。
Translation: I’m saving money in order to study abroad in Japan.
「留学する」 is a volitional verb, and the act of saving money is also being carried out by the speaker. Because the subject of the goal and the subject of the action are the same, 「ために」 can be used. - Example: 家族のために、頑張って働いています。
Kana: かぞくのために、がんばってはたらいています。
Translation: I’m working hard for my family.
When a noun is followed by 「のために」, it is often used to mean “for someone’s or something’s benefit.” This is also a very common extended use of 「ために」 and carries a sense of making an effort or devoting oneself to someone or something.
Usage ② of 「〜ために」｜The subjects of the two clauses must be the same
- Example: 子供にプレゼントを買うために、デパートへ行きました。
Kana: こどもにプレゼントをかうために、デパートへいきました。
Translation: I went to the department store in order to buy a present for the child.
The person who performs 「買う」 and the person who performs 「行く」 are the same. This is one of the core restrictions of the 「ために」 pattern: the subject of the purpose clause and the subject of the action clause cannot switch to different people. - Example: ❌ 子供が食べるために、夜ご飯を作っておきます。
Kana: こどもがたべるために、よるごはんをつくっておきます。
Translation: (Unnatural) I’ll prepare dinner in advance in order for the child to eat it.
The person who 「食べる」 is the child, while the person who 「作る」 is an adult. Because the subjects of the two clauses are different, using 「ために」 here sounds awkward. This is one of the easiest mistakes for beginners to make. - Example: ⭕️ 子供が食べられるように、夜ご飯を作っておきます。
Kana: こどもがたべられるように、よるごはんをつくっておきます。
Translation: I’ll prepare dinner in advance so that the child can eat.
Changing the verb to the potential form 「食べられる」 and switching to 「ように」 immediately makes the sentence sound natural. This is also one of the key differences most often used when comparing the two patterns.
Basic usage and conjugation rules for 「〜ように」
「〜ように」 can only follow verbs and cannot directly follow nouns. In addition, it must be used with a “non-volitional verb”: a verb in the potential form, a negative form, or a verb whose meaning itself cannot be directly controlled by intention, such as わかる、聞こえる、見える、治る, and so on.
| What it follows | Pattern | Example |
| Potential-form verb | Potential form＋ように | 話せるように |
| Negative-form verb | ない form＋ように | 忘れないように |
| Non-volitional verb | Dictionary form＋ように | 雨が降るように |
Usage ① of 「〜ように」｜Expressing a wish that a certain state will be achieved
- Example: 日本語が話せるように、毎日練習しています。
Kana: にほんごがはなせるように、まいにちれんしゅうしています。
Translation: I practice every day so that I can speak Japanese.
「話せる」 is a potential form and therefore belongs to the category of non-volitional verbs. The sentence carries a sense of “I hope to reach that state.” Compared with 「ために」, it has slightly less forceful determination and a little more of a hopeful nuance. - Example: JLPTに合格できるように、頑張ります。
Kana: JLPTにごうかくできるように、がんばります。
Translation: I’ll work hard so that I can pass the JLPT.
Although the goal is still 「合格」, the potential form 「合格できる」 is used here with 「ように」. The tone is somewhat softer than 「合格するために」 and carries less of the forceful sense of “I’m definitely going to make it happen.” - Example: 忘れ物をしないように、メモを書きました。
Kana: わすれものをしないように、メモをかきました。
Translation: I wrote a note so that I wouldn’t forget anything.
「忘れる」 is a non-volitional verb. After changing it to the negative form with 「ない」, it can be followed by 「ように」. This use of the pattern to mean “in order to avoid a certain situation” is extremely common in everyday life.
Usage ② of 「〜ように」｜The subjects of the two clauses can be different
- Example: 先生は学生がわかるように、ゆっくり説明しました。
Kana: せんせいはがくせいがわかるように、ゆっくりせつめいしました。
Translation: The teacher explained slowly so that the students could understand.
The subject of the purpose clause is 「学生」, while the subject of the action clause is 「先生」. The fact that the two subjects are different is one of the biggest differences between 「ように」 and 「ために」. - Example: ホワイトボードの字が見えるように、前の席に座ります。
Kana: ホワイトボードのじがみえるように、まえのせきにすわります。
Translation: I sit in the front so that I can see the writing on the whiteboard.
「見える」 is a non-volitional verb. This sentence also carries the sense of “I want to achieve a state in which I can see it,” which fits the core nuance of 「ように」. - Example: 宝くじが当たりますように。
Kana: たからくじがあたりますように。
Translation: I hope I win the lottery.
Using 「〜ますように」 by itself at the end of a sentence is a common Japanese pattern for expressing a wish or prayer. It often appears on ema prayer plaques or when making a wish. This kind of “prayer-like” use belongs only to 「ように」 and cannot be expressed with 「ために」 at all.
「ために」 vs. 「ように」: See the differences in nuance and conjugation at a glance
| Comparison | ために | ように |
| What it follows | Volitional verbs, noun＋の | Non-volitional verbs (potential forms, negative forms, verbs describing natural phenomena, etc.) |
| Strength of nuance | Active and determined: “achieve it through my own effort” | More wish-oriented: “hope to reach that state” |
| Subjects of the two clauses | Must be the same person | Can be different |
| Can it follow a noun? | Yes (noun＋のために) | No |
| Common mistake | ❌「子供が食べるために」 | ❌「マンガを読めるために」 |
| Correct example | ✅「合格するために勉強する」 | ✅「合格できるように勉強する」 |
▌How to distinguish volitional and non-volitional verbs
❌ Unnatural: マンガを読めるために、日本語を勉強します。
(「読める」 is a potential form and therefore a non-volitional verb, so it cannot be followed by 「ために」.)
✅ Correct: マンガが読めるように、日本語を勉強します。
The key here is the form of the verb: volitional verbs take 「ために」, while non-volitional verbs take 「ように」. Although there are a small number of exceptions to this rule, it is sufficient as a guideline for learners up through the intermediate and upper-intermediate levels.
▌How to judge whether the subjects are the same
❌ Unnatural: みんながわかるために、漢字にルビをふりました。
(The subject of the first clause is 「みんな」, while the person performing the action in the second clause is the speaker, so the two are different.)
✅ Correct: みんながわかるように、漢字にルビをふりました。
If the “person doing the action” is not the same in the two clauses, you can almost immediately judge that 「ように」 should be used rather than 「ために」.
How Japanese 「〜ために」 and 「〜ように」 are actually used in travel and everyday situations
Although these two patterns often appear in grammar questions, they are also used very frequently in everyday Japanese conversation and travel situations. Behind them is a Japanese linguistic tendency to distinguish clearly between “purpose” and “state”—whether you do something “to achieve a result that you can control” or “in the hope that things will move in a favorable direction.” Japanese uses different grammatical patterns to separate these two mental attitudes clearly, whereas the Chinese 「為了」 often combines both senses into a single expression.
▌Situation ①｜Asking how to reach a destination at a train station in Japan
A：迷わないように、地図を見せていただけますか。
まよわないように、ちずをみせていただけますか。
Could you show me a map so that I don’t get lost?
B：はい、こちらの地図を持っていってください。
はい、こちらのちずをもっていってください。
Yes, please take this map with you.
📌 Grammar Point: Here, 「迷わないように」 is used rather than 「迷わないために」 because 「迷わない」 is the negative form of a non-volitional verb. It expresses the hope that the situation of getting lost will not occur, rather than deliberately “not getting lost” through sheer willpower.
▌Situation ②｜Checking how to use a product with a store clerk at a drugstore
A：荷物を軽くするために、小さいサイズを買おうと思います。
にもつをかるくするために、ちいさいサイズをかおうとおもいます。
I’m thinking of buying the smaller size in order to make my luggage lighter.
B：それなら、こちらの旅行用サイズがおすすめです。
それなら、こちらのりょこうようサイズがおすすめです。
In that case, I recommend this travel-size version.
📌 Grammar Point: 「軽くする」 is a volitional verb (causative form), and the person performing the action is consciously choosing to make the luggage lighter. Because the subjects of the two clauses are the same, 「ために」 is used to express a purpose that the speaker has actively decided to accomplish.
Cultural Notes:
- In Japan, people almost always use 「〜ますように」 when making wishes or praying for good fortune. Common phrases written on ema prayer plaques include 「合格できますように」 and 「幸せになれますように」. These expressions reflect the way Japanese distinguishes between “what you accomplish through your own effort” and “what you leave to fate.” 「ように」 carries the latter kind of modest, non-demanding nuance.
- In more formal writing or news reports, 「〜のために」 is often used to explain the purpose of policies or plans, as in 「地域経済の活性化のために」. In this use, 「ために」 expands from expressing the purpose of an individual action to describing goals at the organizational or societal level, and it frequently appears in intermediate- and advanced-level reading passages.
- In Japanese workplaces, the phrase 「お客様のために」 is also commonly heard. Here, 「ために」 is not merely a grammatical expression of purpose but also a phrase emphasizing a customer-first service attitude. It is connected to the Japanese cultural value of 「相手のため」—thinking and acting for the sake of the other person.
How to understand Korean 「-기 위해서」 in comparison with Japanese 「ために」
◆ Similar grammar: -기 위해서
The Korean purpose expression 「-기 위해서」 is quite similar in use to the Japanese 「ために」. It is formed by adding the nominalizer 「-기」 to a verb stem and then attaching 「위해서」, producing the same overall structure of “purpose＋action.” At the same time, Korean does not distinguish as strictly between whether the preceding verb is “volitional” or not, which is one respect in which it differs from the stricter distinction made in Japanese.
- Example: 시험에 합격하기 위해서 매일 공부합니다.
Romanization: si-heom-e hap-gyeo-ka-gi wi-hae-seo mae-il gong-bu-ham-ni-da
Translation: I study every day in order to pass the exam.
The structure of this sentence corresponds almost one-to-one with the Japanese 「試験に合格するために」. Both use a purpose construction after a goal verb with volitional intent. - Example: 가족을 위해서 열심히 일하고 있어요.
Romanization: ga-jok-eul wi-hae-seo yeol-sim-hi il-ha-go i-sseo-yo
Translation: I’m working hard for my family.
「명사＋을/를 위해서」 corresponds to Japanese 「noun＋のために」 and can likewise be used to mean “for the benefit of a certain person or thing.”
◆ The core difference from 「ために」:
Korean 「-기 위해서」 does not distinguish volitional and non-volitional verbs as strictly as Japanese does, nor does Korean have a pattern corresponding specifically to 「ように」 as a construction for “non-volitional verb＋wish.” For this reason, Korean speakers learning Japanese need to pay particular attention to the Japanese-specific dividing line between 「ために」 and 「ように」 rather than simply applying Korean intuitions directly.
To understand the boundary between these two grammar patterns, the key is to look at whether the goal is something you can directly control through your own actions and whether the person performing the action is the same in both clauses. The next time you are preparing to write or speak Japanese, you can quickly run through these two criteria in your head, and the answer will usually become fairly clear.
FAQs
「ために」 is used to mean “in order to achieve a goal that can be controlled through one’s own volition.” It follows the dictionary form of a volitional verb or 「noun＋の」, and the person performing the action in the second clause must be the same as the subject of the purpose clause. It is commonly used in sentences emphasizing active effort, such as “study in order to pass an exam.”
The biggest differences involve the type of verb and restrictions on the subject. 「ために」 follows volitional verbs, and the subjects of the two clauses must be the same; 「ように」 follows non-volitional verbs such as potential and negative forms, and the subjects of the two clauses may be different. In terms of nuance, 「ために」 conveys stronger determination, while 「ように」 is more wish-oriented.
The most common mistake is using 「ために」 after a potential-form verb, as in 「マンガを読めるために」. This sounds unnatural because 「読める」 is a non-volitional verb; the correct form is 「読めるように」. Another common mistake is overlooking whether the subjects are the same and forcing 「ために」 into a sentence whose clauses have different subjects.
In conversation, 「ために」 is often used for personal goals such as saving money or passing an exam. In formal writing or news reports, 「〜のために」 is often extended to explanations of the purposes of policies and plans, such as 「地域経済の活性化のために」. The underlying logic is the same; only the scope expands from individual goals to organizational or societal ones.
First look at the verb: if it describes something you can directly do through your own volition, it is closer to 「ために」. If it is a potential form, negative form, or a verb such as 「わかる」 or 「見える」 that cannot be directly controlled by will, use 「ように」. Then check whether the subjects of the two clauses are the same person: if they are the same, choose 「ために」; if they are different, choose 「ように」.