Grammar Rule in 30 Seconds
'People' is always plural in English, so it must use 'don't' instead of 'doesn't'.
- Use 'don't' for plural subjects like 'people' (e.g., People don't like waiting).
- Use 'doesn't' for singular subjects like 'person' (e.g., That person doesn't like waiting).
- Never say 'people doesn't'—it is the most common mistake for English learners.
Overview
don't と doesn't の使い分けです。これは「三人称単数現在形（三単現）」という、英語特有のルールに基づいています。日本語には「主語によって動詞の形が変わる」という概念がほとんどないため、頭ではわかっていても、いざ話そうとするとつい間違えてしまうのです。don't と doesn't を正しく使い分けることが、英語の「正確さ（Accuracy）」の指標となるからです。ビジネスシーンや就職活動（就活）、あるいはフォーマルなメールのやり取りにおいて、この基本ルールを守ることは、相手に「この人は基礎がしっかりしている」という信頼感を与えることにつながります。逆に、ここを間違えてしまうと、どんなに難しい単語を知っていても、全体的に幼い印象や、不自然な印象を与えてしまう可能性があります。don't と doesn't を使い分けるためのポイントを徹底的に解説します。単なる暗記ではなく、英語の構造的な仕組みを理解することで、自然に正しい形が口から出てくるようになりましょう。do という助動詞です。しかし、英語には「主語が誰かによって動詞の形を合わせる」という Subject-Verb Agreement（主述の一致） というルールがあります。これが、私たち日本人にとって最大の難関の一つです。s や es をつけるという特別なルールが存在します。否定文の場合、その s の役割を助動詞の do が引き受け、does に変化します。そこに否定の not が組み合わさって does not（短縮形：doesn't）となります。s が、否定文になると助動詞の does に移動します。その結果、メインの動詞は「原形（元の形）」に戻ります。これは、英語の助動詞が持つ「時制や人称の情報をすべて肩代わりする」という性質によるものです。people（人々）のような名詞です。日本語の感覚では「人々」という一つのグループ（単数）のように感じられますが、英語では person の複数形として扱われるため、doesn't ではなく don't を使います。このように、単数か複数かを常に意識する習慣が、英語脳を作る第一歩となります。don't を選ぶか doesn't を選ぶかが決まります。以下の表で、そのパターンを整理してみましょう。I, We | don't | 原形 | I don't drink coffee. |You | don't | 原形 | You don't need to worry. |They, The students, People | don't | 原形 | People don't usually do that. |He, She, It, My boss, The train | doesn't | 原形 | He doesn't speak Japanese. |- 1主語が
He,She,Itまたは「一人の人・一つの物」の時だけdoesn'tを使う。 - 2それ以外（
I,You,We,Theyや複数の人・物）はすべてdon'tを使う。 - 3
don't/doesn'tの後ろの動詞は、必ず「原形」にする。（sをつけてはいけません！）
He works hard.（彼は一生懸命働く）という肯定文を否定文にする場合、works の s が do に移って does になり、He doesn't work hard. となります。work に s が残らないように注意しましょう。don't と doesn't を使った現在形の否定文は、主に以下の3つのシチュエーションで使用されます。これらはすべて「現在も続いている状態や習慣」を表す時に使われます。- 個人的な好みや意見を伝える時
I don't like natto.（私は納豆が好きではありません。）My sister doesn't enjoy horror movies.（妹はホラー映画を楽しみません。）They don't agree with the proposal.（彼らはその提案に賛成していません。）
- 習慣やルーティン、繰り返される行動について話す時
I don't usually eat breakfast.（私は普段、朝食を食べません。）The bus doesn't run on Sundays.（そのバスは日曜日は運行していません。）My father doesn't smoke anymore.（父はもうタバコを吸いません。）
- 一般的な事実や不変の真理について述べる時
The sun doesn't revolve around the earth.（太陽は地球の周りを回っていません。）Vegetarians don't eat meat.（ベジタリアンは肉を食べません。）This smartphone doesn't require a physical SIM card.（このスマートフォンは物理的なSIMカードを必要としません。）
The company doesn't allow remote work.（その会社はリモートワークを許可していない）や Our manager doesn't check Slack after 6 PM.（私たちのマネージャーは午後6時以降、Slackをチェックしない）のように、ルールや習慣を伝える際によく使われます。- 1三人称単数なのに
don'tを使ってしまう
- 間違い:
My boss don't like the idea. - 正しい:
My boss doesn't like the idea. - 原因: 日本語では「上司は〜しない」と言う際、動詞の形は主語に影響されません。そのため、英語で最も馴染みのある否定形
don'tを無意識に選んでしまいがちです。主語が自分（I）でもあなた（You）でもない「一人の誰か」である時は、常にdoesn'tのアラートを鳴らすようにしましょう。
- 1
doesn'tの後の動詞にsを残してしまう
- 間違い:
She doesn't likes coffee. - 正しい:
She doesn't like coffee. - 原因: 「三人称単数だから
sをつけなきゃ！」という意識が強すぎて、助動詞doesn'tを使っているにもかかわらず、メインの動詞にもsをつけてしまうパターンです。これを「二重マーキング」と呼びますが、英語では一箇所（助動詞）で人称を示せば十分なのです。doesn'tが出たら、後ろの動詞は「裸の形（原形）」にすると覚えましょう。
- 1
Peopleを単数扱いしてしまう
- 間違い:
People doesn't know the truth. - 正しい:
People don't know the truth. - 原因: 前述の通り、
peopleは「人々」という複数形です。日本語の「世間の人は〜」という単数に近いイメージに引っ張られないよう注意が必要です。同様にChildren（子供たち）も複数形なのでdon'tを使います。
don't / doesn't と混同しやすいのが、Be動詞の否定形（am not, isn't, aren't）です。これは日本人が最も苦労する比較の一つです。以下の表で違いを明確にしましょう。don't / doesn't) | Be動詞の否定 (isn't / aren't) |He doesn't work. (彼は働かない) | He isn't a worker. (彼は労働者ではない) |They don't study. (彼らは勉強しない) | They aren't students. (彼らは学生ではない) |He doesn't happy. というものがありますが、happy は動作ではなく「状態（形容詞）」なので、正しくは He isn't happy. です。逆に He isn't work. と言うと「彼は仕事という存在ではない」という奇妙な意味になってしまいます。否定したいのが「動き（動詞）」なのか「状態・正体」なのかを区別することが重要です。doesn't を使わずに does not と言うのはどんな時ですか？does not のように短縮しない形は、主に書き言葉（ビジネスメール、論文、公的文書）や、否定の意味を強く強調したい時に使われます。例えば、親が子供に「絶対にダメ！」と言う時に You do NOT go there! と強調することがあります。日常会話では doesn't の方が自然でスムーズです。Everyone や Everybody は don't ですか、doesn't ですか？doesn't です。Everyone（全員）は意味としては複数人を指しますが、文法上は「一つのまとまり」として「単数」扱いになります。そのため、Everyone doesn't like the new rule.（全員がその新ルールを気に入っているわけではない）のように doesn't を使います。doesn't を使えますか？didn't を使います。didn't の便利なところは、主語が I でも He でも They でも、形が変わらないことです。doesn't はあくまで「現在の習慣や事実」を話す時に限定して使いましょう。don't と doesn't の使い分けがそんなに厳しいのですか？doesn't を使って描写する練習から始めてみてください。2. Negative Present Simple Agreement
| Subject Type | Subject Example | Auxiliary | Verb Form |
|---|---|---|---|
|
Plural Noun
|
People
|
don't
|
base form (work)
|
|
Plural Pronoun
|
They
|
don't
|
base form (work)
|
|
Singular Noun
|
The person
|
doesn't
|
base form (work)
|
|
Singular Pronoun
|
He / She / It
|
doesn't
|
base form (work)
|
|
Collective Pronoun
|
Everyone
|
doesn't
|
base form (work)
|
Contractions vs. Full Forms
| Full Form | Contraction | Usage |
|---|---|---|
|
People do not
|
People don't
|
Standard / Informal
|
|
The person does not
|
The person doesn't
|
Standard / Informal
|
|
Individuals do not
|
N/A
|
Very Formal / Academic
|
Meanings
The use of the negative auxiliary verb 'do not' (don't) to negate a statement where 'people' is the subject.
General Plurality
Referring to humans in general or a large group.
“People don't usually carry cash these days.”
Specific Groups
Referring to a specific set of individuals previously mentioned.
“Those people don't work here anymore.”
Contrastive Singular
Distinguishing between one individual and a group.
“One person doesn't make a crowd, and people don't always agree.”
Reference Table
| 主語のタイプ | 正しい否定形 | 例文 |
|---|---|---|
|
I / You (私・あなた)
|
don't
|
You `don't` need a password.
|
|
He / She / It (彼・彼女・それ)
|
doesn't
|
She `doesn't` live here anymore.
|
|
We / They (私たち・彼ら)
|
don't
|
They `don't` open until 10 AM.
|
|
単数の名詞 (例: 友達1人)
|
doesn't
|
My friend `doesn't` speak Spanish.
|
|
複数の名詞 (例: 友達たち)
|
don't
|
My friends `don't` know him.
|
|
集合名詞 (例: チーム)
|
doesn't
|
The team `doesn't` practice on Fridays.
|
|
People (人々)
|
don't
|
Most people `don't` realize that.
|
フォーマル度スペクトル
The general public does not support this policy. (Politics/Opinion)
People don't like this policy. (Politics/Opinion)
Folks don't really dig this policy. (Politics/Opinion)
Peeps don't mess with this policy. (Politics/Opinion)
Don't vs. Doesn't: どっちを使う？
DON'T を使う場合
- I I don't
- You You don't
- We We don't
- They They don't
- 複数の名詞 Cats don't
DOESN'T を使う場合
- He He doesn't
- She She doesn't
- It It doesn't
- 単数の名詞 The dog doesn't
Don't と Doesn't の比較
どっちを使えばいい？判定フロー
主語は 'He', 'She', 'It' または単数の名詞（the cat など）ですか？
どっちのチーム？
チーム DON'T
- • I
- • You
- • We
- • They
- • My parents
- • The players
チーム DOESN'T
- • He
- • She
- • It
- • My father
- • The player
- • The weather
レベル別の例文
People don't like bad food.
People don't like bad food.
They don't know me.
They don't know me.
People don't go there.
People don't go there.
My friends don't dance.
My friends don't dance.
Most people don't work on Sundays.
Most people don't work on Sundays.
Why don't people use this door?
Why don't people use this door?
Those people don't live here.
Those people don't live here.
People don't usually eat late here.
People don't usually eat late here.
People don't always say what they mean.
People don't always say what they mean.
If people don't vote, nothing changes.
If people don't vote, nothing changes.
Young people don't watch TV as much now.
Young people don't watch TV as much now.
People don't realize the cost of living.
People don't realize the cost of living.
People don't necessarily want more options.
People don't necessarily want more options.
Many people don't feel comfortable speaking in public.
Many people don't feel comfortable speaking in public.
People don't often consider the long-term effects.
People don't often consider the long-term effects.
The local people don't appreciate the new noise.
The local people don't appreciate the new noise.
People don't typically subscribe to such radical views.
People don't typically subscribe to such radical views.
Indigenous peoples don't always have their rights respected.
Indigenous peoples don't always have their rights respected.
People don't just stumble into success by accident.
People don't just stumble into success by accident.
Rational people don't behave in such a volatile manner.
Rational people don't behave in such a volatile manner.
People don't, as a rule, take kindly to being patronized.
People don't, as a rule, take kindly to being patronized.
Disenfranchised people don't merely want charity; they want agency.
Disenfranchised people don't merely want charity; they want agency.
People don't half complain when the Wi-Fi goes down!
People don't half complain when the Wi-Fi goes down!
History shows that people don't always learn from past mistakes.
History shows that people don't always learn from past mistakes.
間違えやすい
Learners think 'everyone' is plural because it means 'all people'.
Learners think 'police' is a singular organization.
These can be singular or plural depending on the dialect.
よくある間違い
People doesn't like.
People don't like.
The people is not here.
The people are not here.
People don't likes.
People don't like.
One people don't.
One person doesn't.
Does people know?
Do people know?
Every people don't.
Everyone doesn't.
People doesn't have.
People don't have.
Everyone don't like it.
Everyone doesn't like it.
The police doesn't.
The police don't.
Most of people doesn't.
Most people don't.
The peoples doesn't.
The peoples don't.
People doesn't half...
People don't half...
文型パターン
People don't ___ as much as they used to.
Why don't people ___ when they are in ___?
It's a shame that people don't ___ anymore.
Most people don't have the ___ to ___.
Real World Usage
People don't realize how fake Instagram is.
I've noticed that some people don't adapt well to change.
Why don't people just call back??
Why people don't trust the economy.
People don't tip in this country.
Many people do not have access to clean water.
「S」のルールのショートカット
「S」の二度塗りに注意！
She doesn't likes... と言ってしまうこと。doesn't がすでに 's' の役割を終えているので、後ろの動詞は元の形に戻します。 "She doesn't like cats."リズムで耳を慣らそう
街中で聞く 'He Don't'
He don't care と聞こえることがありますが、これは方言やスラングです。テストや仕事では "He doesn't care" を使いましょう。Smart Tips
Stop and say 'They doesn't'. Does that sound wrong? Yes! So 'people doesn't' is also wrong.
Remember: 'People' are many dots; 'Everyone' is one big circle around the dots.
Always expand the contraction to 'do not' for a more professional tone.
Treat 'police' exactly like 'people'. They are always plural.
発音
Contraction Stress
In 'People don't', the stress is often on 'don't' to emphasize the negation.
Linking
The 'l' in people often links softly to the 'd' in don't.
Falling Intonation
People don't ↘ care.
A definitive statement of fact.
暗記しよう
記憶術
People are plural, like a party. You don't go to a party alone; you 'don't' use singular verbs with people.
視覚的連想
Imagine a crowd of people holding a giant 'DO' sign. There are many of them, so they need the big 'DO' (don't), not the small 'DOES' (doesn't).
Rhyme
When it's 'people' in the street, 'don't' is the word you need to meet.
Story
Once there was a man named 'Person' who lived alone and 'doesn't' like noise. Then a group called 'People' moved in next door. They 'don't' care about the noise because they are a big group.
Word Web
チャレンジ
Look around you in a public place. Write 5 negative sentences about what the people there 'don't' do (e.g., 'People don't wear hats here').
文化メモ
In the UK, collective nouns like 'the team' or 'the government' often take plural verbs ('The team don't'), making 'people don't' feel even more natural.
Americans are very strict about 'people don't' but will use singular for other collectives ('The team doesn't').
In many dialects, 'people' is the universal plural, and 'don't' is the universal negative, sometimes even replacing 'doesn't' in non-standard speech.
The word 'people' comes from the Old French 'pueple' and Latin 'populus'.
会話のきっかけ
What are some things people don't realize about your country?
Why do you think people don't exercise more?
What is a common habit that people don't do anymore?
In your opinion, why don't people trust the news?
日記のテーマ
よくある間違い
Test Yourself
My phone ___ have enough battery to last the whole day.
正しい文を選んでください：
Find and fix the mistake:
She don't want to go to the meeting.
Score: /3
練習問題
8 exercisesMost people ___ like to wake up early.
Find and fix the mistake:
That person don't want to go, but other people doesn't care.
Why ___ people use the recycling bin more often?
don't / usually / people / that / say
Select all that apply: 1. People, 2. Everyone, 3. The police, 4. She
A: Does everyone like the new boss? B: No, __.
People understand the risks.
1. My family, 2. My friends, 3. Everyone, 4. People
Score: /8
Practice Bank
12 exercisesI ___ remember his name.
This coffee ___ taste very good.
正しい文を選んでください：
My parents doesn't understand my job.
単語を並べ替えて正しい文を作ってください：
「その車は動きません（故障しています）」を英語に訳してください。
主語と正しい否定形を組み合わせてください：
Why ___ you agree with me?
It don't matter what they think.
正しい文を選んでください：
単語を並べ替えてください：
「人々はそれを知りません」を英語に訳してください。
Score: /12
よくある質問 (8)
In English, 'people' is the plural of 'person'. Think of it like 'children' (plural of child). It refers to the individuals in the group, not the group as a single unit.
No. In standard English, 'people doesn't' is always grammatically incorrect. You might hear it in some very specific dialects, but you should never use it in exams or professional life.
Words ending in -one, -body, and -thing are always singular. Think of 'everyone' as 'every single one'.
Yes, but in very formal writing, you should use the full form 'people do not' instead of the contraction 'don't'.
The singular is 'person'. So, 'One person doesn't' but 'Two people don't'.
Yes! 'The police' is always plural in English. You must say 'The police don't know', not 'The police doesn't know'.
Yes, but only when referring to different ethnic or national groups (e.g., 'The peoples of Africa don't all speak the same language'). This is rare.
Use 'Do'. For example: 'Do people like this?' or 'Why don't people like this?'
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
La gente
Spanish is singular; English is plural.
Les gens / Tout le monde
French has both a plural and a singular collective.
Die Leute
Almost identical usage.
人々 (Hitobito)
Japanese has no subject-verb agreement.
الناس (An-nas)
Arabic has gendered plural agreement.
人们 (Rénmen)
No conjugation in Chinese.
Learning Path
Prerequisites
関連動画
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