ラジオ英会話 25/11/7(金)L145ネイティブのイディオム＆決まり文句（say/tell/talk/speakを含む）
今回は、ネイティブがよく使う自然な表現30選を、意味・用例つきでご紹介します。
（ややカジュアルなものからフォーマルまで、幅広くカバーしています）
Say を使うイディオム・決まり文句
表現 意味 例文
say hello (to someone) （人に）あいさつする Please say hello to your parents for me.
say no more もう言わなくていい（理解した） “We need help.” “Say no more — I’m on it.”
say cheese! （写真を撮るときに）チーズ！ Smile! Say cheese!
say what? えっ、何て言った？（驚き） Say what? You got the job?!
needless to say 言うまでもなく Needless to say, he was very happy.
say the word （一言言えば）すぐにやる Just say the word and I’ll help you.
let’s say （仮に）～だとしよう Let’s say you win the lottery — what would you do?
have your say 自分の意見を言う Everyone will have their say in the meeting.
say so そう言う If you didn’t like it, why didn’t you say so?
that is to say つまり（言い換え） He’s a linguist, that is to say, a language expert.
Tell を使うイディオム・決まり文句
表現 意味 例文
tell the truth 本当のことを言う Please tell the truth — I won’t get mad.
tell a lie 嘘をつく Don’t tell a lie to your friends.
tell a joke 冗談を言う He loves telling jokes at parties.
tell the difference (between) ～の違いを見分ける Can you tell the difference between these wines?
tell someone off （人を）叱る、説教する His mom told him off for being late.
tell someone to do (something) （人に～するように）言う She told me to wait here.
tell someone apart 区別する（双子など） I can’t tell the twins apart!
time will tell 時がたてば分かる Time will tell if this plan works.
I can tell わかるよ（見て／聞いて） You’re upset — I can tell.
tell me about it （共感の表現）ほんとそれ “It’s so hot today.” “Tell me about it!”
Talk を使うイディオム・決まり文句
表現 意味 例文
talk about ～ ～について話す We talked about our future.
talk someone into ～ing ～するよう説得する She talked me into joining the club.
talk someone out of ～ing ～しないよう説得する He talked me out of quitting my job.
talk to oneself ひとりごとを言う Are you talking to yourself again?
talk behind someone’s back 陰口を言う Don’t talk behind her back.
talk nonsense ばかなことを言う You’re talking nonsense!
talk shop 仕事の話をする They always talk shop at dinner.
talk the talk (and walk the walk) 言うだけでなく実行する He really walks the walk, not just talks the talk.
talk big 大げさに言う、自慢する He always talks big but never delivers.
talk turkey 本題を話す、率直に話す Let’s talk turkey — how much can you pay?
Speak を使うイディオム・決まり文句
表現 意味 例文
speak up 大きな声で話す／はっきり意見を言う Please speak up, I can’t hear you.
speak out 公に意見を言う She spoke out against injustice.
so to speak 言ってみれば、いわば He’s a walking dictionary, so to speak.
speak one’s mind 思っていることをはっきり言う Don’t be afraid to speak your mind.
speak ill of ～の悪口を言う Never speak ill of the dead.
speak highly of ～を褒める Everyone speaks highly of her work.
speak for oneself 自分の意見を言う（または代表して話す） I speak for myself when I say I’m tired.
actions speak louder than words 行動は言葉より雄弁 Don’t just promise — actions speak louder than words.
speak the same language 意気投合する We really speak the same language about music.
so to speak いわば He’s a magician, so to speak, with words.
🌟 学習のコツ
動詞 イディオムの特徴
say 「一言・発言・表現」に関するフレーズが多い
tell 「相手・情報伝達」に焦点がある
talk 「会話・やり取り・説得」など人とのやりとり系が多い
speak 「フォーマル・意見・言語能力」に関係する表現が多い
💡おすすめ練習法
気に入った表現を3つ選ぶ
自分のことに置き換えて例文を作る
例：
- I always speak my mind at meetings.
- My teacher told me off for being late.
- Needless to say, I was nervous before the test.