シャドーイング練習: Understand ANY English Word (No Dictionary Needed!) - 動画で英語スピーキングを学ぶ
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You are happily reading a book or talking to someone in English, and then a word stops you.
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You don't know what it means. What do you do?
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You can't stop and look in the dictionary every time there's a word you don't know, so you have to guess what the word means.
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But here's the problem: Most people guess wrong.
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In this video, I'm going to show you a simple three step technique that will dramatically increase your ability to correctly guess the meaning of unknown words and remember them for the future.
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The best thing about this technique is that it has been proven to work in just 15 minutes, and it works for all levels of English, especially lower-level learners.
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You'll also get to try a special test called the Word Detective Test, where you can practice your new skills and see your results instantly.
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But before we start, let me show you how difficult it really is to guess word meanings in English.
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This research shows that on average learners who pass the Cambridge C1 exam know between 3,750 and 4,500 words.
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If you know 4,500 words, then you would know 95% of the words in a typical English fiction novel.
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That seems pretty good!
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But it also means that 5% of the vocabulary in the novel would be new, which is the equivalent of 15 unknown words on each page.
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That's a lot!
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And that's why being able to guess the meaning of words from context is such an important skill.
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But as I said, guessing is not easy.
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Studies have shown that a typical learner is only able to guess correctly around 25% of the time, so you will be wrong three out of four times.
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The good news is that using the simple technique I'm about to show you, you can increase the probability of guessing correctly to 80%.
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So you will be right three out of four times.
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That's pretty amazing.
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But please note that you shouldn't stop and try to guess every unknown word because as I just explained, there might be a lot of them.
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Focus your attention on the unknown words that are causing communication problems.
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Now it's time to learn the three-step technique that will improve your ability to guess unknown words and become a professional word detective.
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The first step is: Parts of speech.
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Can you correctly identify nouns, verbs, adjectives, and adverbs?
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This is a really fundamental skill.
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In fact, some research has shown that most incorrect guesses about word meanings are caused by getting the part of speech wrong.
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So here are some quick tips to help you: Find the verb first. It tells you what the subject is doing.
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Ask yourself: What is happening in this sentence?
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Next, look for nouns.
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You can identify nouns by looking for words with a, an, or the in front of them, and you can also look for words that start with capital letters.
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Next, find the adjectives and adverbs.
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Adjectives will almost always be directly before nouns, and adverbs will almost always be directly before or after all those other words.
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Here's a pro tip from me as an English teacher of 15 years: if you don't know what part of speech a word is, it's probably an adverb.
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Finally, be careful when using word endings to identify the part of speech, because in English they can be tricky.
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For example, you might associate the ED and ING endings with verbs in English, but many adjectives also end in ED and ING.
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The key to correctly identifying the part of speech in English will most often be word order.
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Once we have correctly identified the part of speech that gives us some vital information that helps us to successfully guess the meaning of the word.
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If it's a verb, we know that our unknown word probably describes an action or a state.
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If it's a noun, then the word is probably a person, place, or thing.
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If it's an adjective, it gives us extra information about the noun.
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And if it's an adverb, it usually gives more detail about how, when or where.
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Now we can move on to step two: Helper vocabulary.
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Are you able to get helpful information from the vocabulary surrounding the unknown word?
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Take some time to look at all the words and phrases around this unknown word.
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This will give you a general feeling for the word.
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It's important to note that you don't need to know exactly what the unknown word means, so you don't need to translate it, or look for a synonym in your native language.
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Often you only need to know if it's a positive or a negative word.
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For example, the surrounding words: sunny, laughing, smiling, and happy, tell us that the unknown word is probably positive.
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Something else that can really help is focusing on those little grammar words like and, but, because, if, and so.
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Those words can give you vital context clues.
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For example, in this sentence, the word because indicates cause and effect.
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His dog died, so we can expect the missing word to be negative, like sad or devastated.
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But in this sentence, the word although indicates contrast.
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So even though something bad happened, the missing word is probably positive, like calm or happy.
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In a situation where you don't have a lot of time to analyze all the language, like in a spoken conversation, simply focusing on those grammar words can be a quick and effective way to guess word meanings.
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Now we can move on to the third and final step: Guess and check the word meaning.
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Did you get it right?
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This is a really important step, not only for fluent communication, but also for learning and remembering new words.
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If you are reading a book, you can check your guess using a dictionary.
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In a conversation, you can get confirmation from the other person, like this: Does _____ mean happy?
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You mean _____, like happy?
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Was he _____ because he was happy?
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If you check your guess and use the word in context, you will be much more likely to remember the word and be able to use it again in the future.
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So let's revise those three steps again.
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Step one, identify the part of speech.
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Step two, look at the surrounding language.
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And step three, guess and check the meaning.
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Learning words from context is an important skill because the reality is that all language learners, including native speakers, will learn most of their vocabulary in this way.
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Of course, it's possible to learn vocabulary through deliberate study or flashcards, but most learners simply don't have time to learn thousands of words this way, and research shows that learning vocabulary in context is more effective and allows you to be actually able to use the words you learn.
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If you want to practice the technique you learn today and see how good your guessing skills really are, go to the Canguro English website and take the free Word Detective test.
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You will get instant results that show you exactly where you need to improve.
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But please remember that in language learning there are no magic techniques.
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Your guessing skills will only continue to improve with practice.
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I hope that this video has given you the tools and the motivation to do that.
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I'm Christian. This is Canguro English, and I'll see you in class.
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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B2レベルのスピーキングレッスンは、動画「Understand ANY English Word」を教材にしています。 繰り返し出てくる語は次のとおりです：word, guess, unknown, step, English。 この動画には、シャドーイング用の文が75文、単語が1237語あります。 音声の長さは10:49です。 話す速さは1分あたり約114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。
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 |
|---|---|---|
| noun 名詞 | /naʊn/ | 名詞 |
| vocabulary 名詞 | /vəˈkæb.jə.lə.ɹi/ | 語彙, 語彙力 |
| adjective 名詞 | /ˈæd͡ʒ.ɪk.tɪv/ | 形容動詞 |
| learner 名詞 | /ˈlɜɹnəɹ/ | 学習者 |
| verb 名詞 | /vɝb/ | 動詞 |
| surround 動詞 | /səˈɹaʊnd/ | 囲む, 取り巻く |
| dictionary 名詞 | /ˈdɪk.ʃəˌnɛ.ɹi/ | 辞書, 字書 |
| grammar 名詞 | /ˈɡɹæm.ə(ɹ)/ | 文法 |
| flashcard 名詞 | /ˈflæʃˌkɑɹd/ | 教材用のカード, フラッシュカード |
| revise 動詞 | /ɹɪˈvaɪz/ | 改正する, 改める |
| synonym 名詞 | /ˈsɪn.əˌnɪm/ | 同義語, 類義語 |
| fluent 形容詞 | /ˈfluənt/ | ぺらぺら, 流暢な |
| deliberate 形容詞 | /dɪˈlɪb.(ə.)ɹət/ | 故意の, 作為的 |
| analyze 動詞 | /ˈæn.əˌlaɪz/ | 分析する |
| translate 動詞 | /tɹænzˈleɪt/ | 訳す, 翻訳する |
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。
- You don't know what it means.
- What do you do?
- Can you correctly identify nouns, verbs, adjectives, and adverbs?
- Did you get it right?
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 | has been proven · have shown · has shown |
| 受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる | has been proven · are caused |
注意したい発音
話し手はdon't, I'm, can'tなど、短縮形や弱形を14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。
- 「sh」と「zh」の音: dictionary /ˈdɪk.ʃəˌnɛ.ɹi/, flashcard /ˈflæʃˌkɑɹd/, confirmation /ˌkɑn.fəɹˈmeɪ.ʃən/
- 長い単語（アクセントの位置に注意）: vocabulary /vəˈkæb.jə.lə.ɹi/, dictionary /ˈdɪk.ʃəˌnɛ.ɹi/, devastated /ˈdɛv.əˌsteɪ.təd/, deliberate /dɪˈlɪb.(ə.)ɹət/, probability /ˌpɹɑ.bəˈbɪl.ə.ti/
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: vocabulary /vəˈkæb.jə.lə.ɹi/, learner /ˈlɜɹnəɹ/, flashcard /ˈflæʃˌkɑɹd/, deliberate /dɪˈlɪb.(ə.)ɹət/, translate /tɹænzˈleɪt/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: vocabulary /vəˈkæb.jə.lə.ɹi/, adjective /ˈæd͡ʒ.ɪk.tɪv/, verb /vɝb/, revise /ɹɪˈvaɪz/, devastated /ˈdɛv.əˌsteɪ.təd/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: flashcard /ˈflæʃˌkɑɹd/, fluent /ˈfluənt/, confirmation /ˌkɑn.fəɹˈmeɪ.ʃən/
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。noun, vocabulary, adjective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。