シャドーイング練習: Lake Victoria - 動画で英語スピーキングを学ぶ
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Lake Victoria Lake Victoria is the second largest freshwater lake in the world by area,
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the largest in Africa and the largest tropical lake in the world.
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It has an area of 68 ,870 square kilometers.
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The construction of the Owen Falls Dam on the Nile in 1949 and 1954 resulted in a rise of 1100.
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135 meter above sea level the depth of the deepest point
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in the lake is 82 meter lake victoria is one of
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the african great lakes it is overlooked by three countries kenya oganda
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and tanzania the lake also includes about 3 000 islands some of
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which have become a destination for many tourists the white nile
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river stems from the lake the arab traveler al -idrisi was the first to speak about
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AD who lived an accurate map of the lake.
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The lake was named after explorer John Henning's peak in his report counting the first British to document it.
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The peak accomplished this in 1858 while on an expedition with Richard Francis Burton to locate the source of denial.
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This campaign was sponsored
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by the royal geographical society with an area of about 59
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974 kilometers lake victoria is the largest lake on africa by area the largest tropical lake in the world
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and the second largest in the world for fresh water after
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lake superior in north america in terms of volume lake victoria is the 9th largest continental lake in the world
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and contains about 2 ,424 cubic kilometers of water.
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Lake Victoria occupies a shallow depression in Africa.
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The maximum depth of the lake is between 80 and 84 meters,
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262 and 276 feet, and the average depth is 40 meters, 130 feet.
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Its catchment area covers
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The lake has a coastline of 7142 km wind digitized at the Wanmalil level
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and the islands make up more than 3 % of this length.
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The area of the lake is divided into three countries: Kenya occupies 6%, Uganda 45 % and Tanzania 49%.
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The lake includes many spaces of fish that don't live anywhere else, especially tilapia and indigo perch.
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Geologically speaking, Lake Victoria is relatively young with an age of about 400 ,000 years formed
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when waste flowing rivers were blocked by a rising crystal mass during its geological history.
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Lake Victoria has undergone changes, ranging from its current shallow depression to what may be a series of much smaller lakes.
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Geological cores taken from the bottom of Lake Victoria show
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that Lake Victoria has dried up completely at least three times since its formation.
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It is possible that these drying cycles are related to past ice ages, which were times when precipitation decreased globally.
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Lake Victoria last dried up about...
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70 ,300 years ago and refiled 40 ,700 years ago with the onset of the African White Age.
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The Nile River is the only river flowing from Lake Victoria as it exists the lake near Jinja, Uganda.
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In terms of contributing water, this is what makes Lake Victoria the main source of the longest branch of the Nile.
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However, the more distant source of the Nile Basin and thus the ultimate source of the Nile,
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As one of the branch rivers of the Kagera River, the exact tributary remains indetermined,
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which originates either in Rwanda or Burundi.
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The upper part of the Nile is generally known as the Victoria River until the reaches Lake Albert,
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although it is part of the same river system now as the White Nile and is sometimes referred to as such.
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Strictly speaking, these names do not apply to it until after the river crosses the the Ogandan border into southern Sudan in the north.
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Recently, the lake has become showing eutrophication conditions in the period in 1990 and 1991.
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Concentrations in the mixed layer were higher than in 19,
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16 and 61, with continuous supersaturation of oxygen in surface water.
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Oxygen concentration in low moving water that is the layer of water that lies below the
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1990 and 91 for a longer period than 1960 and 61 with values less than 1 mg per liter.
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Occurs in waters as shallow as 40 meters compared to the largest event over 50 meters.
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In 1961 changes in oxygenation are consistent with measurements of the high algal biomass and productivity.
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These changes rose for various reasons successive burning within its Bajan, soot, and ash deposited over the vast lake area.
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From the increased nutrient flows through the rivers, and from the increased pollution associated with settling along their shores.
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Many species of mammals live in the Lake Victoria region, and some are closely related to the lake itself and nearby wealth lands.
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Among these are the epipotamos, the African otter, the mongos, the marsh, the redback boar, the divaza waterbog, the cane rats,
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and the giant African otter.
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The Williams Moo Turtle is restricted to Lake Victoria and other lakes, rivers and swamps in the Upper Nile Bashing.
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Lake Victoria is a transisperance of a large number of migratory birds.
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But it's also a living environment.
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for a large number of resident spices in the dense Swamps.
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Many animals find shelter and food.
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This place is home to Abu Markoub Rex which feeds on fish,
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amphibians and turtles and is currently classified as an endangered spices.
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You can find what's tiled and also several types of cormorants,
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the great cormorant, carbo and African cormorant as well as various types of herons in the wooded savannah that surrounded the lake,
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we can observe the Senegalese Kingfisher, a very colorful bird that belong to the same family as Kingfisher's.
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Near the shore we can sometimes see a Dima of worms or barbicans or a black bird with a severed throat.
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Since the 20th century, Lake Victoria ferries have been an important mode of transportation between Uganda, Tanzania and Kenya.
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The major ports of the lake are Kizomo, Mwanza, Makuba, Enti, Pilport and Jinja.
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Until 1963, the fastest and most modern ferry, the MV Victoria, was classified as a Royal Maleship.
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In 1966, trained ferry services between Kenya and Tanzania were established with the introduction Boro and Umoja.
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The equal record for transportation in the lake is the sinking of the Bokuya Ferry there on May 21,
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1996, killing between 800 and 1 ,000 people, making it one of the worst marine disasters in Africa.
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Another tragedy occurred recently on September 20, 2018, involving
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pull Wikitube, the first audiovisual encyclopedia in the English version.
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このレッスンについて
このレッスンでは、「ビクトリア湖」についてのビデオを使って、英語スピーキング練習を楽しみながら進めます。ビデオの内容は地理や環境に関するもので、専門用語も含まれていますが、シャドーイングを通して発音やリズムを磨くことができます。短いフレーズから長い文章まで、少しずつ慣れていきましょう。すぐに成果が感じられる練習法で、英語のスピーキング力が上がりますよ！
重要な語彙とフレーズ
- freshwater lake：淡水湖
- eutrophication：富栄養化
- catchment area：集水域
- tributary：支流
- the White Nile River：白ナイル川
- algal biomass：藻類バイオマス
練習のコツ
ビデオのスピードは中程度で、専門用語があるため、最初はゆっくり聞きながらshadow speechを試してみましょう。シャドーイングのコツは、「聞いたらすぐに繰り返す」ことです。まずは1文ずつ止めて、自分の声で真似します。慣れてきたら、2-3文ずつ繋げて練習しましょう。ビデオのトーンは説明的ですから、抑揚をつけながら話すことで、より自然な発音が身につきます。shadow speakの練習を毎日10分続けると、2週間でリズムが掴めるようになります。英語シャドーイングは、スピーキングだけでなくリスニング力も上げるので、効率的な練習法です。shadowspeaksのように、楽しく繰り返すことが大切です！
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 |
|---|---|
| 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 | is overlooked · was named · was sponsored |
| 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 | have become · has undergone · has dried |
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。