[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-page-ja-ninzuu-to-nenrei-no-kazoekata":3,"grammar-exercises-by-page-01a09a7b-ebf6-7d14-9f0c-2a21d648280b":251,"exercise-list-path-ja-none":267},{"id":4,"title":5,"slug":6,"seoDescription":7,"content":8,"language":9,"level":10,"displayOrder":11,"grammarTopics":12,"createdAt":19,"updatedAt":20,"vocabularyLists":21,"primaryTopicHub":248,"readyImages":250},"01a09a7b-ebf6-7d14-9f0c-2a21d648280b","人数と年齢の数え方","ninzuu-to-nenrei-no-kazoekata","人数を数える「人」と年齢を表す「歳」の読み方を学びます。一人・二人・四人や、一歳・八歳・二十歳などの特別な読み、何人・何歳の質問、丁寧な答え方を表と会話で確認します。家族や友達の人数、自己紹介での年齢を、読み間違えず自然にたずねたり答えたりできるようになります。毎日の会話ですぐに使える数え方です。","人数（にんずう）を数（かぞ）えるときは、数のあとに **人（にん）** を付（つ）けます。年齢（ねんれい）には **歳（さい）** を使います。\n\nどちらも、数によって読み方が変（か）わります。とくに **一人（ひとり）・二人（ふたり）** と **一歳（いっさい）・八歳（はっさい）・二十歳（はたち）** を正しく覚（おぼ）えましょう。\n\n## 1. 一人から十人まで\n\n一人と二人は、「にん」を使わない特別（とくべつ）な読み方です。四人（よにん）と七人（しちにん）の読み方にも注意（ちゅうい）します。\n\n| 数 | 人数の形 |\n| --- | --- |\n| 一 | **一人（ひとり）** |\n| 二 | **二人（ふたり）** |\n| 三 | 三人（さんにん） |\n| 四 | **四人（よにん）** |\n| 五 | 五人（ごにん） |\n| 六 | 六人（ろくにん） |\n| 七 | **七人（しちにん）** |\n| 八 | 八人（はちにん） |\n| 九 | **九人（きゅうにん）** |\n| 十 | 十人（じゅうにん） |\n\n:::note\n七人は **ななにん** と言うこともあります。聞きまちがいを避（さ）けたいときによく使われます。まず、表の「しちにん」を基本（きほん）として覚えても大丈夫（だいじょうぶ）です。\n:::\n\n## 2. 人数をたずねる\n\n人数の質問（しつもん）には **何人（なんにん）** を使います。答えは「三人です」のように言えます。\n\n:::example\n**家族（かぞく）は何人ですか。**\n\n— 四人です。父（ちち）と母（はは）と姉（あね）とわたしです。\n\n**教室（きょうしつ）に学生（がくせい）が何人いますか。**\n\n— 九人います。\n:::\n\n人の名前を言う必要（ひつよう）がないときは、人数だけで答えても自然（しぜん）です。\n\n## 3. 年齢の読み方\n\n「歳」はふつう「さい」と読みますが、一・八・十のあとでは音（おと）が変わります。二十歳は数全体（ぜんたい）が特別な読み方です。\n\n| 数 | 年齢の形 |\n| --- | --- |\n| 一 | **一歳（いっさい）** |\n| 二 | 二歳（にさい） |\n| 三 | 三歳（さんさい） |\n| 四 | **四歳（よんさい）** |\n| 五 | 五歳（ごさい） |\n| 六 | 六歳（ろくさい） |\n| 七 | **七歳（ななさい）** |\n| 八 | **八歳（はっさい）** |\n| 九 | 九歳（きゅうさい） |\n| 十 | **十歳（じゅっさい）** |\n| 十八 | **十八歳（じゅうはっさい）** |\n| 二十 | **二十歳（はたち）** |\n\n:::tip\n小さい「っ」が入る **いっさい・はっさい・じゅっさい** は、声（こえ）に出して一つずつ練習（れんしゅう）すると覚えやすいです。\n:::\n\n## 4. 年齢をたずねて答える\n\n基本の質問は **何歳（なんさい）ですか** です。子（こ）どもや親（した）しい人には自然ですが、大人（おとな）には年齢を聞かない場面（ばめん）もあります。\n\n:::example\n**弟（おとうと）さんは何歳ですか。**\n\n— 八歳です。\n\n**お子さんはおいくつですか。**\n\n— 二歳です。\n:::\n\n**おいくつですか** は、何歳ですかよりやわらかく丁寧（ていねい）な聞き方です。\n\n## 5. 「人」と「歳」を分ける\n\n「人」は何人いるか、「歳」は何歳かを表します。同じ数でも、読み方と意味（いみ）がちがいます。\n\n- **一人（ひとり）**：人の数\n- **一歳（いっさい）**：年齢\n- **二人（ふたり）**：人の数\n- **二歳（にさい）**：年齢\n\n:::warning\n二十歳は **にじゅっさい** ではなく、ふつう **はたち** と読みます。また、四人は **よにん**、四歳は **よんさい** です。\n:::\n\n## 6. 読み方のまとめ\n\n| たずねたいこと | 質問 | 答えの例（れい） |\n| --- | --- | --- |\n| 人数 | **何人ですか** | 六人です。 |\n| 年齢 | **何歳ですか** | 十歳です。 |\n| 年齢をやわらかく聞く | **おいくつですか** | 二十歳です。 |\n\n人数では **ひとり・ふたり**、年齢では **いっさい・はっさい・じゅっさい・はたち** 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