シャドーイング練習: Class Presentation: Why Is the Sky Blue? - 動画で英語スピーキングを学ぶ

レッスンを作成中...
1
Right, everyone, settle down, please.
2
Oliver's presenting his science project today.
3
Um... morning, everyone.
4
So, my question today is, why is the sky blue?
5
First, sunlight looks white, doesn't it?
6
But actually, it's a mix of all the colours,
7
like a rainbow, from red to violet.
8
Oh, like light through a prism?
9
Yes, exactly! Brilliant.
10
Now, when sunlight comes into our air,
11
it hits tiny gas particles, much smaller than dust.
12
Blue light has short waves,
13
so it bounces around much more than red light.
14
It's called Rayleigh scattering, and it fills the sky with blue!
15
Okay, let me show you a quick experiment!
16
This is just water with a little milk in it.
17
Could someone turn off the lights, please?
18
Look! From the side, the water looks a bit blue.
19
No way! It really does look blue!
20
Hang on, I've got a question.
21
If blue scatters more, why are sunsets red, then?
22
Oh... um, good question.
23
Wait, look at the torch through the end of the glass!
24
Whoa, the light looks orange now!
25
At sunset, light travels through much more air,
26
so most of the blue gets scattered away.
27
Only the red and orange light reaches our eyes!
28
Oh, and violet scatters even more than blue,
29
but our eyes are much better at seeing blue.
30
So, that's why the sky is blue, not purple!
31
Well done, Oliver! That was excellent.
32
You started a bit quietly, though.
33
Next time, speak up from the very beginning.
34
I will. Thanks, miss!
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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「Class Presentation: Why Is the Sky Blue?」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34文、単語が249語あります。 音声の長さは1:54です。 話す速さは1分あたり約131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83%は英語の頻出3,000語に含まれます。残りは練習の前に確認しておきましょう。

この動画の重要語彙

動画の中で特に難しい単語13語を、発音と意味つきで紹介します。

単語発音意味
sunset 名詞/ˈsʌnˌsɛt/日没, 日の入り
sunlight 名詞/ˈsʌnˌlaɪt/日光, 太陽光
violet 名詞/ˈvaɪ.ə.lət/菫, スミレ
dust 名詞/dʌst/埃, ほこり
experiment 名詞/ɪkˈspɛɹ.ə.mənt/実験
settle 動詞/ˈsɛtəl/解決する
purple 名詞/ˈpɝ.pl̩/紫
quietly 副詞/ˈkwaɪ.ɪt.li/静かに
particle 名詞/ˈpɑɹtək(ə)l/粒子
whoa/woʊ/どう, どうどう
torch 名詞/ˈtɔːtʃ/松明
scatter 動詞/ˈskætɚ/散る, 散らばる
prism 名詞/ˈpɹɪzəm/プリズム, 角柱

動画に出てくる句動詞

単語意味
settle down 動詞落ち着く
turn off 動詞消す, 切る

注意したい発音

日本語話者が苦手な音：

  • 子音の連続 — 間に母音を入れない: dust /dʌst/, experiment /ɪkˈspɛɹ.ə.mənt/, quietly /ˈkwaɪ.ɪt.li/, bounce /baʊns/, scatter /ˈskætɚ/

この動画での練習方法

  1. 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。
  2. 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。
  3. 自分の声を録音して元の音声と比べます。sunset, sunlight, violet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。

シャドーイングのやり方: ステップ別の完全ガイドを読む →