英語で高得点を取るために絶対必要なのが語彙力とイディオムの知識だ。ただ暗記するだけじゃなくて、実際に使える形で身につける方法を学ぼう。
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Updated Apr 20, 2026
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語彙とイディオムの実践的学習
1 / 5
語彙・イディオム学習の基礎知識
英語の試験で差がつくのは、やっぱり語彙力なんだ。単語を知ってるだけじゃダメで、どう使うかまで理解してないと点数に結びつかない。
語彙っていうのは単語の意味だけじゃなくて、品詞や使い方も含めた総合的な知識のこと。イディオムは「rain cats and dogs（土砂降り）」みたいに、直訳しても意味がわからない表現だね。
コロケーションも超重要。「heavy rain」は自然だけど「strong rain」は不自然に聞こえるっていう、単語同士の自然な組み合わせのこと。これを知らないと、文法的には正しくても変な英語になっちゃう。
ポイント: 文脈から意味を推測する力を鍛えると、知らない単語が出てきても慌てなくなるよ！
効率的な学習法：多読・多聴と語源活用
多読・多聴が語彙を増やす一番の近道だ。BBCニュースやTED Talksなど、興味のある分野から始めてみよう。全部理解しようとしないで、まずは大意を掴むことを意識するのがコツ。
語源を使えば、知らない単語も推測できるようになる。「pre-（前に）」「re-（再び）」「dis-（否定）」みたいな接頭辞を覚えておくと、関連語もまとめて理解できる。
「port（運ぶ）」「spect（見る）」「dict（言う）」みたいな語根を知ってれば、import、inspect、predictの意味も推測しやすくなるよね。
コツ: 知らない単語が出てきてもすぐに辞書を引かず、まず文脈から推測してみよう！
実践的な単語帳作成と文脈推測
単語帳は単語と日本語訳だけじゃダメ。発音記号、品詞、例文、コロケーション、類義語・対義語まで書くと記憶に定着しやすい。
文脈推測の練習をしてみよう。「The new trade agreement is expected to foster better relations」という文で「foster」がわからなくても、貿易協定が二国間の関係を「どうする」のかを考えれば、「促進する」って推測できるよね。
自分で例文を作ると、さらに記憶に残りやすくなる。覚えた単語は積極的にアウトプットして定着させよう。
重要: 推測した後は必ず辞書で確認！推測が合ってると嬉しくて記憶に残るよ。
イディオムの理解とテスト対策
イディオムは直訳しちゃダメ。「on the same page」は「同じページにいる」じゃなくて「認識を共有している」って意味。どんな状況で使われるかを例文ごと覚えるのが効果的だ。
テストでは似ている単語の混同に注意。affect（動詞：影響を与える）とeffect（名詞：効果）、principal（校長）とprinciple（原則）みたいなのは頻出だから要チェック。
多義語も文脈で判断。runは「走る」だけじゃなくて「経営する」「立候補する」「作動する」など色々な意味がある。前後の文をしっかり読んで判断しよう。
注意: 英作文では確信を持って使える語彙だけを選ぼう。無理に難しい単語を使って間違えると減点される！
試験前の最終チェックポイント
語彙学習の総まとめだ。単語は意味・品詞・コロケーション・使い方をセットで覚える。文脈推測の癖をつけて、語源も活用しながら効率的に語彙を増やしていこう。
イディオムは直訳せずに、全体の意味と使われる状況を理解することが大切。多読・多聴で生きた英語に触れて、覚えた語彙は英作文でどんどんアウトプットしよう。
これらのポイントを意識して学習すれば、確実に語彙力がアップして試験でも高得点が狙えるはず。継続が一番大事だから、毎日少しずつでも続けていこう。
最終アドバイス: 完璧を求めすぎず、まずは確実に使える語彙を増やしていこう！
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content in 英語表現
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Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
語彙とイディオムの実践的学習
英語で高得点を取るために絶対必要なのが語彙力とイディオムの知識だ。ただ暗記するだけじゃなくて、実際に使える形で身につける方法を学ぼう。
語彙・イディオム学習の基礎知識
英語の試験で差がつくのは、やっぱり語彙力なんだ。単語を知ってるだけじゃダメで、どう使うかまで理解してないと点数に結びつかない。
語彙っていうのは単語の意味だけじゃなくて、品詞や使い方も含めた総合的な知識のこと。イディオムは「rain cats and dogs（土砂降り）」みたいに、直訳しても意味がわからない表現だね。
コロケーションも超重要。「heavy rain」は自然だけど「strong rain」は不自然に聞こえるっていう、単語同士の自然な組み合わせのこと。これを知らないと、文法的には正しくても変な英語になっちゃう。
ポイント: 文脈から意味を推測する力を鍛えると、知らない単語が出てきても慌てなくなるよ！
Sign up to see the contentIt's free!
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効率的な学習法：多読・多聴と語源活用
多読・多聴が語彙を増やす一番の近道だ。BBCニュースやTED Talksなど、興味のある分野から始めてみよう。全部理解しようとしないで、まずは大意を掴むことを意識するのがコツ。
語源を使えば、知らない単語も推測できるようになる。「pre-（前に）」「re-（再び）」「dis-（否定）」みたいな接頭辞を覚えておくと、関連語もまとめて理解できる。
「port（運ぶ）」「spect（見る）」「dict（言う）」みたいな語根を知ってれば、import、inspect、predictの意味も推測しやすくなるよね。
コツ: 知らない単語が出てきてもすぐに辞書を引かず、まず文脈から推測してみよう！
Sign up to see the contentIt's free!
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Improve your grades
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実践的な単語帳作成と文脈推測
単語帳は単語と日本語訳だけじゃダメ。発音記号、品詞、例文、コロケーション、類義語・対義語まで書くと記憶に定着しやすい。
文脈推測の練習をしてみよう。「The new trade agreement is expected to foster better relations」という文で「foster」がわからなくても、貿易協定が二国間の関係を「どうする」のかを考えれば、「促進する」って推測できるよね。
自分で例文を作ると、さらに記憶に残りやすくなる。覚えた単語は積極的にアウトプットして定着させよう。
重要: 推測した後は必ず辞書で確認！推測が合ってると嬉しくて記憶に残るよ。
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
イディオムの理解とテスト対策
イディオムは直訳しちゃダメ。「on the same page」は「同じページにいる」じゃなくて「認識を共有している」って意味。どんな状況で使われるかを例文ごと覚えるのが効果的だ。
テストでは似ている単語の混同に注意。affect（動詞：影響を与える）とeffect（名詞：効果）、principal（校長）とprinciple（原則）みたいなのは頻出だから要チェック。
多義語も文脈で判断。runは「走る」だけじゃなくて「経営する」「立候補する」「作動する」など色々な意味がある。前後の文をしっかり読んで判断しよう。
注意: 英作文では確信を持って使える語彙だけを選ぼう。無理に難しい単語を使って間違えると減点される！
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
試験前の最終チェックポイント
語彙学習の総まとめだ。単語は意味・品詞・コロケーション・使い方をセットで覚える。文脈推測の癖をつけて、語源も活用しながら効率的に語彙を増やしていこう。
イディオムは直訳せずに、全体の意味と使われる状況を理解することが大切。多読・多聴で生きた英語に触れて、覚えた語彙は英作文でどんどんアウトプットしよう。
これらのポイントを意識して学習すれば、確実に語彙力がアップして試験でも高得点が狙えるはず。継続が一番大事だから、毎日少しずつでも続けていこう。
最終アドバイス: 完璧を求めすぎず、まずは確実に使える語彙を増やしていこう！
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user