“wo chushin ni” Meaning — Centered on / Around 〜 [JLPT N3]

Content by NTJ Kuma · Nihongo to Japan editorial team · Updated July 27, 2026

“Expanding centered on Tokyo” — doing something with 〜 at the center, with examples. (JLPT N3)

「若者を中心に、このアプリが流行っている」 — with it at the core, spreading outward

「このアプリは若者を中心に、広がっている」 (this app is spreading with young people at the center) — 「〜を中心に（して）／を中心として」 expresses “centered on ～, around ～”: taking someone/something as a core, with others arranged or unfolding around it. This guide covers 「を中心に」's use and attachment, separating it from its 「を ＋ noun ＋ に」 family members 「をはじめ」 and 「をきっかけに」.

Core: centered on ～, around ～ (a core ＋ outward unfolding)

「(noun) ＋ を中心に（して）／を中心として」 = “centered on ～, around ～” — marking a core, with other things arranged, proceeding, or unfolding around it:

• 駅を中心に、商店街が広がっている (the shopping district spreads out centered on the station).
• 環境問題を中心に、議論が行われた (a discussion was held around environmental issues).

Feel: “centered on ～／around ～” — the core is “someone/something is the center, the focus, and others revolve around it.” It can mean spatial (distributed around a place), thematic (discussion centered on an issue), or a group (a trend centered on a group).

Attachment & forms

Example sentences

• 太陽を中心に、惑星が回っている。(The planets orbit centered on the sun.) — spatial center
• この小説は、ある家族を中心に話が進む。(This novel unfolds centered on one family.) — focal center
• SNSを中心に、この曲が話題になった。(This song became a topic centered on social media.) — center of spread
• リーダーを中心として、チームがまとまった。(Centered on the leader, the team came together.) — group center
• 若者を中心としたボランティア団体。(A volunteer group centered on young people.) — modifying a noun

⚠️ Common mistakes to avoid

① 「を中心に」 is ‘centered on ～,' not ‘about ～.' 「を中心に」 marks a center, a focus (others around it), not simply “about a topic.” For “about ～ (the content)” use 「について／に関して」 (環境について話す = talk about the environment); for “centered on the environment (unfolding a discussion, activity)” use 「を中心に」 (環境を中心に議論する = discuss around the environment). One is “the topic content,” one “unfolding around a core.”

② To modify a noun, use 「を中心とした／とする」. 「を中心に」 is adverbial (modifying a verb: 〜を中心に広がる); to modify a following noun, use 「を中心とした ＋ noun」 or 「を中心とする ＋ noun」: 東京を中心とした都市圏 (a metropolitan area centered on Tokyo); 彼を中心とするグループ. Don't use 「を中心にの」 (×).

③ Same family as 「をはじめ」「をきっかけに」 but different meanings. All three are 「を ＋ noun ＋ に／として」 structures, but distinct in meaning: を中心に = centered on ～ (a core, others around); をはじめ = led by/represented by ～ (listing a series of the same kind) (東京をはじめ各地で = in various places led by Tokyo); をきっかけに = with ～ as a trigger (a turning point, a start) (留学をきっかけに = with study abroad as a trigger). Don't confuse “centered on” with “led by (listing)” or “triggered by.” (See 〈をはじめ〉〈をきっかけに〉.)

🔄 Nuance & comparison: を中心に／をはじめ／をきっかけに／をめぐって

💡 An exam judgment tip

「〜を中心に（して）／を中心として」 = centered on ～, around ～, its core “someone/something is the center, the focus, with others distributing, proceeding, or unfolding around it” (駅を中心に商店街／若者を中心に流行／環境を中心に議論). Three points: ① it's ‘centered on …,' not ‘about …' (about takes について); ② to modify a noun use 「を中心とした ＋ noun」 (東京を中心とした都市圏); ③ different in meaning from its family 「をはじめ」 (led by …, listing) and 「をきっかけに」 (with … as a turning point) — don't confuse them (see the two guides). To express “unfolding/distributing around a core,” を中心に is the most fitting.

❓ Common questions

Q: 「を中心に」 and 「について」 both touch a topic — how do I tell them apart?

Whether it's ‘centered on … (unfolding)' or ‘about … (the content).' 「〜について」 = about ～ (simply pointing out the ‘topic content' of talk or thought): 環境問題について、レポートを書く (write a report about environmental issues — the content is “environmental issues”); その件について話し合う (discuss that matter). It only flags “what the topic is.” 「〜を中心に」 = centered on ～ (taking something as a ‘core, focus,' with others unfolding, distributing, proceeding around it): 環境問題を中心に、様々な話題を議論した (discussed various topics centered on environmental issues — the environment is the “core,” extending to related topics); 彼を中心にチームが動く (the team operates centered on him — he's the central figure). It stresses “this is the center, others around it.” Test: just “discuss a topic” → について; “with something as a core, others unfolding around it” → を中心に. E.g., 「日本文化について学ぶ」 = learn about Japanese culture (topic); 「京都を中心に、関西を旅行する」 = travel around Kansai centered on Kyoto (core ＋ surroundings). One is “topic content,” one “core ＋ outward.”

Q: 「を中心に」「をはじめ」「をきっかけに」 are all 「を ＋ noun ＋ に」 — how do I quickly tell them apart?

They share a structure (を ＋ noun ＋ に／として) but their cores differ entirely, mapped in a line each:

① を中心に = centered on ～ (a ‘center,' focus, others distributing/unfolding around it): 東京を中心に発展する (develop centered on Tokyo). The key is “center” — something is the core, others around it.

② をはじめ = led by/represented by ～ (citing a most-representative example, with a series of the same kind following): 社長をはじめ、全社員が参加した (led by the president, all employees joined). The key is “a listed representative” — cite a leading example, implying a series follows.

③ をきっかけに = with ～ as a trigger/turning point (something becomes the occasion for change, a start): 入院をきっかけに、タバコをやめた (quit smoking triggered by a hospital stay). The key is “turning point, start” — something set off a later change.

In one line: を中心に = core (others around), をはじめ = representative (listing a series), をきっかけに = turning point (triggering change). Each has its own guide; aim at “core／representative／turning point” and you won't mix them. (〈をはじめ〉〈をきっかけに〉.)

🖊️ Practice Questions (5)

Q1. 「この活動は学生___行われている。」(carried out centered on students)

(A) を中心に　(B) において　(C) にとって　(D) につき

Q2. 「若者___ファッション」(fashion centered on young people) Which form modifies a noun?

(A) を中心とした　(B) を中心に　(C) を中心　(D) を中心にの

Q3. 「東京を中心に展開する」の意味は?

(A) Expanding outward with Tokyo as the core

(B) Avoiding Tokyo

(C) Only outside Tokyo

(D) Unrelated to Tokyo

Q4. 「を中心に」の語感として正しいのは?

(A) Expanding with ~ as the core/center

(B) Debating around ~

(C) Indicating a reason

(D) Indicating contrast/concession

Q5. 接法が正しいのは?

(A) 彼を中心として動く。　(B) 彼に中心として動く。

(C) 彼を中心にの活動。　(D) 彼中心をとして動く。

Answer Explanations

1. (A) を中心に ── Carried out centered on students.

2. (A) を中心とした ── To modify a noun, use を中心とした.

3. (A) ── Expanding with Tokyo as the core.

4. (A) ── Expanding with ~ as the core.

5. (A) ── 「を中心として」 is correct; the other attachments are wrong.