英語で「これはあれより大きい」や「彼が一番速い」って言いたいとき、どうやって表現するか知ってる？これが比較級と最上級だよ。2つのものを比べたり、グループの中で一番を決めたりする超実用的な文法で、テストでもめちゃくちゃ出るから絶対マスターしよう！
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Updated Mar 18, 2026
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使える比較表現: 比較級と最上級
1 / 6
比較級・最上級の基本ルール
日常会話で「AはBより背が高い」とか「これが一番美味しい」って言うことあるよね？英語でもまったく同じことができるんだ。
比較級は2つのものを比べるときに使って、形容詞に**-erをつけるか、前にmoreをつける。「〜より」という意味のthan**と一緒に使うのが基本パターンだよ。
最上級は3つ以上の中で一番を表すときに使って、形容詞に**-estをつけるか、前にmostをつける。前には必ずtheをつけて、inやof**と組み合わせることが多いんだ。
覚えておこう！ 短い単語は-er/-est、長い単語はmore/mostを使うのが基本。でも例外もあるから、使いながら覚えていこう！
比較級の作り方と使い方
実は比較級って、単語の長さや終わり方によってルールが変わるんだ。でも慌てなくて大丈夫、パターンは決まってるからね！
短い単語（tall、fast）はそのまま**-erをつけるだけ。「My brother is taller than me」みたいに使うよ。eで終わる単語（large、nice）は-r**だけ追加すればOK。
ちょっと特殊なのは、big→bigger、hot→hotterみたいに最後の文字を重ねるパターンと、easy→easier、busy→busierみたいにyをiに変えるパターン。
長い単語（beautiful、difficult）は前にmoreをつけるだけ。「This flower is more beautiful than that one」って感じで使うんだ。
注意！ moreを使うときは、単語の後ろに-erはつけちゃダメ。more beautifulerは完全に間違いだからね！
最上級の作り方と使い方
最上級は比較級のルールとほとんど同じだから、もう半分覚えたようなもの！-erが-estになって、moreがmostになるだけなんだ。
短い単語はtall→the tallest、long→the longest。eで終わる単語はlarge→the largest。特殊変化はbig→the biggest、easy→the easiestって感じ。
長い単語は前にmostをつけて、beautiful→the most beautiful、difficult→the most difficult。どのパターンでも前にtheをつけるのを絶対忘れちゃダメ！
「Ken is the tallest in his class」や「Mt. Fuji is the highest mountain in Japan」みたいに、in（場所・グループ）やof（具体的なもの）と組み合わせて使うのが基本パターンだよ。
超重要！ 最上級の前のtheは絶対に忘れちゃダメ。これがないと文法的に間違いになっちゃうからね！
不規則変化と同等比較
ここが一番テストに出るところ！good→better→best、bad→worse→worst、many/much→more→mostは絶対に暗記しよう。
「I like summer better than winter」や「He is the best soccer player in our team」みたいに、日常会話でもめちゃくちゃ使うフレーズばかりだよ。
「同じくらい〜」って言いたいときはas...asを使うんだ。「I am as tall as my father」（父と同じくらいの背の高さ）って感じで、asとasの間には必ず原級（元の形）を入れる。
否定文だと「She is not as old as Ken」（ケンほど年をとっていない）になって、最初のasはsoに変えてもOKなんだ。
テストのコツ！ as...asの間は絶対に原級！as taller asみたいに-erをつけたら即バツだから気をつけて！
実践例文とテストポイント
実際にどう使うか例文で確認してみよう。比較級なら「My dog runs faster than your dog」、最上級なら「She is the youngest student in our school」って感じ。
同等比較は「He can speak English as well as his teacher」や否定で「This room is not as large as that one」みたいに使えるよ。日常会話でもよく使うパターンばかりだから、口に出して練習してみて！
テストで絶対チェックされるのは、比較級のthan、最上級のthe、as...asの間の原級、そして不規則変化の暗記。特にgood-better-bestは100%出るから完璧にしておこう。
最上級の後のinとofの使い分けも重要で、inは場所やグループ（in my class）、ofは具体的なもの（of the three）って覚えておけば大丈夫！
暗記のコツ！ 例文を何度も音読して、口で形を覚えるのが一番効果的。文法は頭で考えるより体で覚えた方が早いよ！
まとめ
比較の表現は英語の基本中の基本だけど、ルールを覚えちゃえば意外と簡単だったでしょ？
比較級（〜er than/more〜than）で2つを比べて、最上級（the〜est/the most〜）で一番を表して、as〜asで同じくらいを表現する。この3パターンがあれば、日常会話でもテストでも完璧だよ！
特に不規則変化のgood→better→bestは絶対に覚えて、最上級の前のtheも忘れずに。あとは例文をたくさん読んで、実際に使ってみることが上達の近道だね。
これで君も比較の達人！友達と身長を比べたり、好きなものランキングを作ったりするときに、ぜひ英語で表現してみてね。
最後のアドバイス！ 文法は使ってこそ身につくもの。今日から意識して比較の表現を使ってみよう！
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 英語コミュニケーション
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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
使える比較表現: 比較級と最上級
英語で「これはあれより大きい」や「彼が一番速い」って言いたいとき、どうやって表現するか知ってる？これが比較級と最上級だよ。2つのものを比べたり、グループの中で一番を決めたりする超実用的な文法で、テストでもめちゃくちゃ出るから絶対マスターしよう！
比較級・最上級の基本ルール
日常会話で「AはBより背が高い」とか「これが一番美味しい」って言うことあるよね？英語でもまったく同じことができるんだ。
比較級は2つのものを比べるときに使って、形容詞に**-erをつけるか、前にmoreをつける。「〜より」という意味のthan**と一緒に使うのが基本パターンだよ。
最上級は3つ以上の中で一番を表すときに使って、形容詞に**-estをつけるか、前にmostをつける。前には必ずtheをつけて、inやof**と組み合わせることが多いんだ。
覚えておこう！ 短い単語は-er/-est、長い単語はmore/mostを使うのが基本。でも例外もあるから、使いながら覚えていこう！
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比較級の作り方と使い方
実は比較級って、単語の長さや終わり方によってルールが変わるんだ。でも慌てなくて大丈夫、パターンは決まってるからね！
短い単語（tall、fast）はそのまま**-erをつけるだけ。「My brother is taller than me」みたいに使うよ。eで終わる単語（large、nice）は-r**だけ追加すればOK。
ちょっと特殊なのは、big→bigger、hot→hotterみたいに最後の文字を重ねるパターンと、easy→easier、busy→busierみたいにyをiに変えるパターン。
長い単語（beautiful、difficult）は前にmoreをつけるだけ。「This flower is more beautiful than that one」って感じで使うんだ。
注意！ moreを使うときは、単語の後ろに-erはつけちゃダメ。more beautifulerは完全に間違いだからね！
Sign up to see the contentIt's free!
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Improve your grades
Join milions of students
最上級の作り方と使い方
最上級は比較級のルールとほとんど同じだから、もう半分覚えたようなもの！-erが-estになって、moreがmostになるだけなんだ。
短い単語はtall→the tallest、long→the longest。eで終わる単語はlarge→the largest。特殊変化はbig→the biggest、easy→the easiestって感じ。
長い単語は前にmostをつけて、beautiful→the most beautiful、difficult→the most difficult。どのパターンでも前にtheをつけるのを絶対忘れちゃダメ！
「Ken is the tallest in his class」や「Mt. Fuji is the highest mountain in Japan」みたいに、in（場所・グループ）やof（具体的なもの）と組み合わせて使うのが基本パターンだよ。
超重要！ 最上級の前のtheは絶対に忘れちゃダメ。これがないと文法的に間違いになっちゃうからね！
Sign up to see the contentIt's free!
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不規則変化と同等比較
ここが一番テストに出るところ！good→better→best、bad→worse→worst、many/much→more→mostは絶対に暗記しよう。
「I like summer better than winter」や「He is the best soccer player in our team」みたいに、日常会話でもめちゃくちゃ使うフレーズばかりだよ。
「同じくらい〜」って言いたいときはas...asを使うんだ。「I am as tall as my father」（父と同じくらいの背の高さ）って感じで、asとasの間には必ず原級（元の形）を入れる。
否定文だと「She is not as old as Ken」（ケンほど年をとっていない）になって、最初のasはsoに変えてもOKなんだ。
テストのコツ！ as...asの間は絶対に原級！as taller asみたいに-erをつけたら即バツだから気をつけて！
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
実践例文とテストポイント
実際にどう使うか例文で確認してみよう。比較級なら「My dog runs faster than your dog」、最上級なら「She is the youngest student in our school」って感じ。
同等比較は「He can speak English as well as his teacher」や否定で「This room is not as large as that one」みたいに使えるよ。日常会話でもよく使うパターンばかりだから、口に出して練習してみて！
テストで絶対チェックされるのは、比較級のthan、最上級のthe、as...asの間の原級、そして不規則変化の暗記。特にgood-better-bestは100%出るから完璧にしておこう。
最上級の後のinとofの使い分けも重要で、inは場所やグループ（in my class）、ofは具体的なもの（of the three）って覚えておけば大丈夫！
暗記のコツ！ 例文を何度も音読して、口で形を覚えるのが一番効果的。文法は頭で考えるより体で覚えた方が早いよ！
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
まとめ
比較の表現は英語の基本中の基本だけど、ルールを覚えちゃえば意外と簡単だったでしょ？
比較級（〜er than/more〜than）で2つを比べて、最上級（the〜est/the most〜）で一番を表して、as〜asで同じくらいを表現する。この3パターンがあれば、日常会話でもテストでも完璧だよ！
特に不規則変化のgood→better→bestは絶対に覚えて、最上級の前のtheも忘れずに。あとは例文をたくさん読んで、実際に使ってみることが上達の近道だね。
これで君も比較の達人！友達と身長を比べたり、好きなものランキングを作ったりするときに、ぜひ英語で表現してみてね。
最後のアドバイス！ 文法は使ってこそ身につくもの。今日から意識して比較の表現を使ってみよう！
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