シャドーイング練習: Engineer's tool list - 動画で英語スピーキングを学ぶ
レッスンを作成中...
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Welcome to my latest video on learning technical and engineering English.
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Today what I'm going to do is I'm going to go through some of the tools that are used in engineering
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and I'll tell you the tools in English with a little explanation of how they're used.
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So the first tool is a veneer caliper and the veneer caliper is to measure internal and external sizes
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and here you can see the internal and external calipers.
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External micrometer.
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The external or outside micrometer is to measure outside sizes or diameters.
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Internal micrometer.
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Engineers use the internal micrometer to measure inside diameters.
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Depth micrometer.
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Engineers use the depth gauge micrometer to measure depths or how deep something is.
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Dial gauge.
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A dial gauge is to measure distance.
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The measurement is on a clock called a dial.
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Height gauge.
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Height gauge is to measure the height of something, how high it is.
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It is also used to mark an object object.
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Surface table.
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A surface table is a solid flat table used as the main horizontal reference for precision measurement marking or inspection.
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Steel ruler.
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Steel rulers are to measure distances or to rule straight lines.
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Engineer squares.
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An engineer square is to check a work piece is square, that is that two sides are at 90 degrees to one another.
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Straight edge.
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Straight edge is to check that surfaces are straight.
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Scribing block.
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Scribing block is used to check flat surfaces and to find the centre of the round bars.
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Trammel or trammels.
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Engineers trammel heads are for scribing arcs and circles.
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Protractor.
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Most protractors measure angles in degrees.
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Ascriber.
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Ascriber is a hand tool used in metalwork to mark lines on work pieces before you machine the piece.
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V-block.
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A V-block is to secure round or cylindrical items or work pieces.
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Parallels.
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Parallels are to support and accurately set jobs in vice or bolted to the machine table.
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Angle plates.
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Angle plates are used to hold a workpiece for marking or measuring.
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Dividers.
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Dividers are used for scribing circles on metal also used for measuring distances of markings.
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Center punch.
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A A center punch is to make small points used as markers for drilling.
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Okay, so that's a list of some of the most used tools in engineering.
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Stay tuned because the video will now give you a multi-choice quiz
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so you can test to see what you've learned or can remember.
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So, welcome to Engineering Tools Part 1, Multiple Choice Quiz.
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This is where I'll show you a picture and ask you what the tool is.
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You'll have a choice of three.
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Before the answer is given, there is a short pause.
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But if you need more time, of course, pause the video.
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What's the name of this tool?
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Micrometer, veneer caliper, depth gauge.
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The answer is veneer caliper.
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What's this called?
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Dividers, protractor, steel rule.
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The answer is a steel rule.
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What are these?
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Veneer calipers, trammels, dividers.
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The answer is trammels.
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What is this?
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Depth micrometer, external micrometer, internal micrometer.
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The answer is internal micrometer.
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What's this tool called?
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Dial gauge, depth gauge, height gauge.
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This, the answer is, is dial gauge.
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What's this tool?
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Scribing block, height gauge, depth gauge.
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The answer is height gauge.
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What's this called?
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Surface table, square, straight edge.
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The answer is surface table.
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What's the name of this tool?
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Square, straight edge, steel ruler.
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The answer is square.
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What are these called?
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Straight edges, steel rulers, parallels.
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These are straight edges.
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What's this called?
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A height gauge, trammel, scribing block.
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The answer is scribing block.
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What's this?
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Protractor, square, dividers.
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The answer is protractor.
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What's this tool?
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Center punch, protractor, scriber.
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The answer is scriber.
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What are these?
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V-blocks, parallels, angle plates.
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The answer is V-blocks.
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What are these?
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Angle plates, straight edges, parallels.
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These are parallels.
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What's this?
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Surface table, angle plate, B block.
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The answer is angle plate.
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What's this?
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Dividers, scriber, protractor.
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The answer is dividers.
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This tool is Describer, Dividers, Centre Punch.
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The answer is Centre Punch.
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That's the end of the quiz.
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I hope you enjoyed it.
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Remember to do things again and again is the best way to learn and remember.
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So why not do the test again?
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Or watch the whole video again.
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Thanks for watching.
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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「Engineer's tool list」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：answer, gauge, tool, micrometer, block。 この動画には、シャドーイング用の文が107文、単語が716語あります。 音声の長さは7:36です。 話す速さはゆっくりで、1分あたり約94語です。一つ一つの音をまねる余裕があります。 英語の頻出3,000語に含まれる単語は75%だけなので、語彙は難しめです。 全107文のうち17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 |
|---|---|---|
| micrometer 名詞 | /maɪˈkɹɑmɪtəɹ/ | マイクロメータ |
| protractor 名詞 | /pɹəˈtɹæktə(ɹ)/ | 分度器 |
| scribe 名詞 | /skɹaɪb/ | 筆記者, スクライブ |
| parallel 形容詞 | /ˈpæ.ɹəˌlɛl/ | 平行の |
| punch 名詞 | /pʌnt͡ʃ/ | 殴打, パンチ |
| ruler 名詞 | /ˈɹulɚ/ | 定規, 物差し |
| quiz 名詞 | /kwɪz/ | クイズ |
| pause 名詞 | /pɔːz/ | 休止, 中断 |
| measurement 名詞 | /ˈmɛʒ.ə.mənt/ | 測定 |
| diameter 名詞 | /daɪˈæmɪdɚ/ | 直径 |
| horizontal 形容詞 | /ˌhoɹəˈzɑn.təl/ | 水平な, 横の |
| accurately 副詞 | /ˈæk.jə.ɹɪt.li/ | 正確に |
| precision 名詞 | /pɹɪˈsɪʒ.ən/ | 精度, 正確性 |
| bolt 名詞 | /boʊlt/ | ボルト |
| drill 名詞 | /dɹɪl/ | ドリル |
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 |
|---|---|
| 最上級 the -est / the most … — グループの中で一番 | the most used · the best |
| 「will」の未来表現 will + 動詞 — その場の決定、約束、予測 | I'll tell · will now give · I'll show |
注意したい発音
話し手はI'll, I'm, they'reなど、短縮形や弱形を7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: measurement /ˈmɛʒ.ə.mənt/, precision /pɹɪˈsɪʒ.ən/, inspection /ɪnˈspɛkʃən/
- 長い単語（アクセントの位置に注意）: micrometer /maɪˈkɹɑmɪtəɹ/, diameter /daɪˈæmɪdɚ/, cylindrical /sɪˈlɪndɹɪkəl/, horizontal /ˌhoɹəˈzɑn.təl/, accurately /ˈæk.jə.ɹɪt.li/
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。micrometer, protractor, scribe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。