シャドーイング練習: Using Would Have, Could Have, Should Have - English Grammar Lesson - 動画で英語スピーキングを学ぶ
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179 文
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1
Oh.
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Hello.
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I should have prepared for this lesson, and I guess now I don't know what to say.
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Whoops.
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Martin, you could have at least warned me.
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Now what are we going to do?
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I would have done it, but I was just so busy.
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I could have done it if you told me.
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Don't you have some notes or something we can use?
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I had some notes, but I can't find them.
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Well, think about it.
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Where could they be?
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Not sure.
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I could have left them on the bus.
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I should have never agreed to do this video.
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Hi, I'm Martin.
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Welcome to Oxford Online English!
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In this lesson, you can learn how to use would have, should have, and could have.
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These verbs would, should, could, etc. are modal verbs, so they don't have past forms like normal verbs do.
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Instead, you can talk about the past by adding have plus a past participle after the verb.
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In this lesson, you'll learn to use those modal verbs to talk about the past in English, what they mean, and how they're different.
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Sometimes you have moments when your life could go in very different ways.
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For example, maybe you take an important exam, and your result decides where you can go to university.
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Maybe you're thinking about moving to another country.
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Do you stay where you are, or do you leave?
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Perhaps you're in a relationship, and things aren't going so well.
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Do you stay and try to make it work, or do you move on?
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Life is full of these important moments and decisions.
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Try to think of something like this from your past.
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Now ask yourself.
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You made the choices you made.
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You passed the exam or you failed it.
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You moved to another country or you didn't.
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That's reality, but what if things had gone the other way?
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This is the imaginary past.
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You're imagining a different version of the past.
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You're asking yourself questions like, what if I had worked a bit harder and passed that exam?
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What if I had taken that job and moved to Italy?
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What if I had told her how I feel?
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This is where you use would have.
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Use would have to talk about the imaginary past.
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For example, if I had got better exam results, I would have got into Harvard.
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I wouldn't have met my wife if I had moved to Italy seven years ago.
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If I hadn't forgotten my pen that day, I wouldn't have asked to borrow yours, and we wouldn't have become friends!
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Think about your important moment from the past when your life could have gone in two very different directions.
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What would have happened if things had gone the other way?
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So you can use would have to talk about the imaginary past.
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What about our other verbs?
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Where do you suppose they are?
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I don't know.
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They're usually so reliable.
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I guess they could have mixed up the date.
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Shall we try calling them again?
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We can't wait forever.
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When will it be ready?
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I think next Thursday.
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You said you'd have it finished by the end of this week.
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Now what am I going to do?
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Sorry.
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You could have told me sooner that you weren't going to finish on time.
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Doctor, is it serious?
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No, it's just a scratch.
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But be more careful next time.
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You could have really hurt yourself.
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You can also use could have to talk about the imaginary past.
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If I'd had more time, I could have finished everything.
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He could have won it if he hadn't slipped at the start.
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When you use could have to talk about the imaginary past, you're talking about possibilities.
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We're talking about opportunities and chances which you didn't have in reality,
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but in your imaginary version of the past, you would have had these chances.
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However, could have can also have different meanings.
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Let's look!
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Here you saw three more ways to use could have.
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that you can go back and review the dialogues if you need to.
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Can you explain how could have is used in each of these dialogues?
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Could have can mean that you aren't sure about something in the past.
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You're talking about a possibility.
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They could have mixed up the date.
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I've lost my keys.
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I could have left them at work. Where are they?
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I guess they could have missed the train.
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In these examples, you aren't sure about something that happened in the past.
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You use could have to make a guess about what happened.
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You can also use could have to criticise someone.
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You could have told me sooner.
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You could have tidied up a bit.
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You could have worn something a bit nicer.
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In these examples, you want to criticise the other person for something they didn't do.
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Finally, you can use could have to mean that somebody was lucky to avoid a bad situation in the past.
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It's just a scratch, but you could have really hurt yourself.
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We were really late, and we could have missed our plane, but luckily we just made it!
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Let's review quickly.
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Could have has four different meanings. Can you remember them?
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You can use could have to talk about the imaginary past, to guess about something in the past which you aren't sure about,
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to criticise someone for something they didn't do, and to say that someone was lucky to avoid a bad situation.
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Next, what about should have?
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You just saw that could have can be used to criticise someone.
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Could have is similar, but you can use it in a wider variety of ways.
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Like could have, you can use it to criticise something that someone didn't do in the past.
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You should have called me like you promised.
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He should have checked the recipe before he started cooking.
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They should have practised penalties before the match.
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You can also use it to criticise something that someone did.
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You shouldn't have drunk so much at the wedding.
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She shouldn't have left everything to the last minute.
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You can even use it to criticise yourself.
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If you regret something which you did in the past, I should have realised what was going on.
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I shouldn't have said that.
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You can also use should have to apologise to someone.
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If you say, I shouldn't have said that, you're admitting that you made a wrong choice and that you regret it.
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This is the most common use of should have, criticizing others or yourself and talking about things you regret in the past.
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However, it has one more meaning.
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Look at three examples.
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Can you work out what should have means here?
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Here, you use should have to talk about something which you expected to happen, but it didn't happen.
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They should have been here by now means that you expected them to have arrived before now, but you're still waiting.
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It should have been ready an hour ago means that you expected everything to be ready earlier.
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Maybe you're cooking something, and it's taking much longer than you thought it would.
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The plane should have landed at 7.30.
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Means you expected the plane to land then, but it didn't.
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Probably you mean that the plane is late, and you're still waiting for it.
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Now, you should have learned two different ways to use should've.
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Let's practice using would have, could have, and should have together.
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You should have told me your friends were coming.
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I would have made some extra food.
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Sorry, I would have called you, but I had no phone credit.
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I should have topped up before we went out.
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What are we going to eat?
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We don't have much in the fridge.
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I should have stopped and got a takeaway on the way.
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Not to worry, we'll order something.
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Where's the food?
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I'm so hungry!
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They should have come by now, right?
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They're probably just busy.
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They could have forgotten.
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They would have called if there was a problem, don't you think?
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Relax.
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You should have had a snack when you got in.
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It'll be here soon. That was delicious!
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I've never had such a good meal.
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You could have left some for me.
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What am I supposed to eat?
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Oh, I'm sorry.
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I would have left some if I'd known you'd wanted some.
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I should have asked.
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Yeah, you should have.
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Oh well, there's half a cucumber in the fridge, I think.
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Look at three sentences from the dialogues.
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Can you explain what they mean?
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The first sentence is talking about the imaginary past.
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It means that if I had known you were bringing guests, I would have made some more food.
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But, in reality, I didn't know, so I didn't make enough food.
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The second sentence is talking about something you aren't sure about in the past.
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Do you remember the situation?
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We were waiting for our takeaway to arrive.
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It was late and we didn't know what happened.
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You use could have here to make a guess about something in the past when you don't know what happened.
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The third sentence is a criticism, or an expression of regret.
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If you say this, you mean that you made a mistake in the past.
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Think back to the dialogues.
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Did we use should have or could have in any other ways?
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Look at two more sentences.
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They should have come by now.
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It could have left some for me.
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What do should have and could have mean here?
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Here should have means that something didn't happen the way you expected.
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You expected the food to be here by now, but it isn't.
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Could have is used to criticise something which someone else didn't do.
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Now, hopefully you understand how to use would have, could have, and should have.
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Get more practice with the full version of this lesson, which includes a quiz to help your understanding of this topic.
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There's a link underneath the video.
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You can also find many more free English lessons on our website, OxfordOnlineEnglish.com.
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Finally, a question.
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Did you learn anything new about using would have, could have, or should have?
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What was new for you in this lesson?
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Please let us know in the comments.
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Thanks for watching!
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See you next time!
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このレッスンの語彙とスピーキングのポイント
このB1レベルのスピーキングレッスンは、動画「Using Would Have, Could Have, Should Have - English Grammar Lesson」を教材にしています。 この動画には、シャドーイング用の文が179文、単語が1723語あります。 音声の長さは13:57です。 話す速さは1分あたり約124語で安定しており、シャドーイングしやすいペースです。 単語の88%は英語の頻出3,000語に含まれるため、語彙は分かりやすいです。 全179文のうち32文が疑問文なので、疑問文のイントネーションや短い受け答えの練習に向いています。
この動画の重要語彙
動画の中で特に難しい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| criticize 動詞 | /ˈkɹɪtɪsaɪz/ | 批判する, 非難する |
| imaginary 形容詞 | /ɪˈmæd͡ʒɪˌn(ɛ)ɹi/ | 架空の, 幻想的な |
| verb 名詞 | /vɝb/ | 動詞 |
| examination 名詞 | /ɪɡˌzæm.ɪˈneɪ.ʃən/ | 診察, 検査 |
| dialogue 名詞 | /ˈdaɪəˌlɑɡ/ | 対談, 対話 |
| scratch 動詞 | /skɹæt͡ʃ/ | 引っ掻く |
| cucumber 名詞 | /ˈkjuˌkʌmbɚ/ | 胡瓜, キュウリ |
| participle 名詞 | /ˈpɑɹtɪˌsɪpəl/ | 分詞 |
| practise 動詞 | /ˈpɹæktɪs/ | 練習する |
| tidy 形容詞 | /ˈtaɪ.di/ | きちんとした, こざっぱりした |
| quiz 名詞 | /kwɪz/ | クイズ |
| snack 名詞 | /snæk/ | 軽食, スナック |
| luckily 副詞 | /ˈlʌk.ɪ.li/ | 幸いにも, 運良く |
| borrow 動詞 | /ˈbɑɹ.oʊ/ | 借りる |
| warn 動詞 | /woɹn/ | 警告する, 言い聞かせる |
動画に出てくる句動詞
| 単語 | 意味 |
|---|---|
| go back 動詞 | 戻る, 帰る |
| go out 動詞 | 出る |
繰り返し練習したい文
動画に出てくる短く完結した文です。日常会話でそのまま使えます。
- Don't you have some notes or something we can use?
- What if I had told her how I feel?
- What about our other verbs?
- Where do you suppose they are?
- Shall we try calling them again?
この動画の文法
話し手がよく使っている文型を、動画の実際の表現とともに紹介します。
| 文型 | 動画での表現 |
|---|---|
| 現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している | I've lost · I've never had |
| 「should」による助言 should + 動詞 — したほうがよいことを伝える | should have · shouldn't have · should have means |
| 過去進行形 was/were + -ing — 過去のある時点で進行中だった動作 | was going · were coming · were bringing |
| 現在進行形 am/is/are + -ing — 今まさに、または最近起きていること | you're thinking · aren't going · You're imagining |
注意したい発音
話し手はdidn't, you're, don'tなど、短縮形や弱形を64回使っています。聞こえたとおりの短い形で発音しましょう。
- 長い単語（アクセントの位置に注意）: imaginary /ɪˈmæd͡ʒɪˌn(ɛ)ɹi/, examination /ɪɡˌzæm.ɪˈneɪ.ʃən/, participle /ˈpɑɹtɪˌsɪpəl/, apologize /əˈpɑləˌd͡ʒaɪz/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: participle /ˈpɑɹtɪˌsɪpəl/, reliable /ɹɪˈlaɪəbl̩/, relax /ɹɪˈlæks/
- 子音の連続 — 間に母音を入れない: criticize /ˈkɹɪtɪsaɪz/, scratch /skɹæt͡ʃ/, cucumber /ˈkjuˌkʌmbɚ/, practise /ˈpɹæktɪs/, quiz /kwɪz/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- 通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
- 自分の声を録音して元の音声と比べます。criticize, imaginary, verbなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。