シャドーイング練習: Google Colab for Python Beginners - Visually Explained - 動画で英語スピーキングを学ぶ

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Have you ever wanted to learn

Python but always felt like it was complicated and you didn't know where to start?

Here's the good news, you don't have to install or configure anything.

Stay with us and in the next 90 seconds you'll learn how to write and run your first line of Python code.

We can do that thanks to Google Colab.

It is a free tool that lets you write and run

Python code directly in your browser

so let's jump in to get started we open our browser

and make sure we're signed into our google account then we'll type google colab in the search bar

and choose colab in the search results once the page loads at the bottom left of the window

we click new notebook perfect now we have our first python notebook ready to use see this empty box

This is called a code cell, and it's where we'll write our first line of Python code.

Let's start simply by telling

Python to display on screen the text, hello world.

We tell Python to display text by writing print followed by a set of parentheses.

Inside the parentheses, we write the text we want to print between quotation marks.

Awesome.

We've now written our first line of Python code.

the next step is to tell python to run the code to do

that we click the play button on the left side of the cell nice

we can see from the green check next to the cell

and the output that our code ran successfully

and very quickly in under 90 seconds

we've gone from python feels complicated to actually coding now this is pretty basic stuff

but it's the first step in your python journey.

There's so much more we can do.

For example, let's see how to use

Python to do some calculations for us.

We'll start by clearing our cell.

Notice that when we do this, the cell output doesn't change.

To update the cell output, we need to run the cell again.

Great, now we have a clean slate let's

now do a simple calculation say five plus three running the cell python performs the calculation

and displays eight notice that here we didn't use print

and python still outputs the answer that's because colab automatically shows the results of the last line in a cell

to see what we mean let's add another calculation above our current one say two plus three

Running the cell, we only see eight, the result of the last line.

The first calculation still runs, but its result isn't displayed.

To see both results, we need to print them.

Now, when we run the cell, both results appear.

Awesome.

To keep experimenting, let's add more cells.

When we hover at the bottom or top of a cell, a few buttons appear.

Clicking plus code adds a brand new code cell that's ready for more code.

Let's try a different calculation this time, 12 times 7.

Running the cell gives us 84.

Each cell works independently, which means we can edit and rerun them whenever we want.

This makes it really easy to experiment and try different things.

But as we add more cells to our notebook, we might want to leave ourselves some notes about what our code does.

To do this, we can add a different type of cell to the notebook, a text cell.

Inside the text cell, we can leave ourselves a note or explain our code.

They also allow us to format our text using something called markdown.

These asterisks are markdown formatting.

The text cells shows the raw text and markdown on the left, and then previews what it will look like on the right.

You don't need to know markdown to use text cells, but if you're curious about it, we left a link to learn more in the description.

When we select close on the text cell, we see what was in the preview before.

to edit this text cell we simply double click it and change the text to something new

awesome now we know how to work with both code

and text cells

but the current organization of our notebook where the text cell follows the calculations is not ideal

it would make more sense if the text cell was above the calculations to move this cell above our two calculation cells,

we can click the arrow on the upper right of the cell and move it to the top.

Looks better!

But as useful as text cells are, sometimes we also might want to add notes inside of our code cells.

We can do this with code comments.

To write a comment, we start with the hashtag symbol.

Then we can write any text we want.

When we run this cell, Python will ignore the comment.

It's just for us.

To confirm this, let's add our super secret calculation code below it and run the cell.

Great, we only get the result of the calculation.

Comments are helpful for reminding us of our code's purpose when we come back to it.

Awesome, now as we work, we might end up with cells we no longer need.

Let's see how to remove them.

We can delete a cell by clicking on it, and then clicking the trash icon in the top right corner of the cell. And poof!

The cell is gone!

Great!

Now that we're comfortable running, adding, and removing cells, we're almost done building our first notebook.

To finish up, let's give the notebook a useful name, like Calculations Practice.

Great, this notebook is automatically saved in Google Drive.

We can confirm this by clicking

File, Locate, and Drive.

We are then taken to a new tab where this notebook is saved in our drive.

Perfect, before we wrap up, let's head back to our notebook to learn a handy shortcut.

To run a cell, instead of clicking the play button, we can press

Shift plus Enter on our keyboard.

this runs the cell and automatically moves us to the next one really useful

when working through a notebook to see what other shortcuts colab offers we can go to tools

and keyboard shortcuts there are lots of options here feel free to explore

and customize them how you'd like

if you'd like to practice what you've learned in this video check out the notebook

we created it has a few exercises to get you started.

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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

このスピーキングレッスンは、動画「Google Colab for Python Beginners - Visually Explained」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：cell, text, code, python, notebook。この動画には、シャドーイング用の文が92文、単語が1079語あります。音声の長さは7:12です。話す速さは1分あたり約150語で、日常会話に近い自然なペースです。単語の87%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

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語	発音	意味
calculation 名詞	/ˌkælkjuˈleɪʃn̩/	計算
notebook 名詞	/ˈnoʊtˌbʊk/	帳面, ノート
output 名詞	/ˈaʊtpʊt/	出力
complicated 形容詞	/ˈkɑm.plɪˌkeɪ.tɪd/	複雑な
format 名詞	/ˈfɔːɹ.mæt/	書式, フォーマット
confirm 動詞	/kənˈfɝm/	確認する
experiment 名詞	/ɪkˈspɛɹ.ə.mənt/	実験
edit 動詞	/ˈɛdɪt/	編集する
keyboard 名詞	/ˈki.bɔɹd/	キーボード, 鍵盤
preview 名詞	/ˈpɹiːvjuː/	試写会
ignore 動詞	/ɪɡˈnɔː/	無視する, 忽略する
curious 形容詞	/ˈkjʊɹ.i.əs/	好奇心の強い, 知りたがる
select 動詞	/sɪˈlɛkt/	選ぶ
ideal 形容詞	/aɪˈdi(ə)l/	理想的な, 理想な
helpful 形容詞	/ˈhɛlp.fl̩/	役に立つ, 有用

動画に出てくる句動詞

単語	意味
check out 動詞	試験する, 検査する

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。

There's so much more we can do.
We'll start by clearing our cell.
To keep experimenting, let's add more cells.
Let's see how to remove them.

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	Have you ever wanted · We've now written · we've gone
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 called · isn't displayed · is automatically saved
「might / may」による可能性 might/may + 動詞 — 起こりうるが確実ではないこと	might want · might end
「will」の未来表現 will + 動詞 — その場の決定、約束、予測	you'll learn · we'll type · we'll write

注意したい発音

話し手はwe'll, we're, didn'tなど、短縮形や弱形を19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: calculation /ˌkælkjuˈleɪʃn̩/, trash /tɹæʃ/, hashtag /ˈhæʃˌtæɡ/, quotation /kwoʊˈteɪʃn̩/, shortcut /ˈʃɔːtkʌt/
長い単語（アクセントの位置に注意）: complicated /ˈkɑm.plɪˌkeɪ.tɪd/, experiment /ɪkˈspɛɹ.ə.mənt/, successfully /səkˈsɛs.fə.li/, independently /ˌɪndɪˈpɛndəntli/, parenthesis /pəˈɹɛn.θə.sɪs/

日本語話者が苦手な音：

/v/ — /b/ にならないように、上の歯を下唇に当てる: preview /ˈpɹiːvjuː/, hover /ˈhɒvə/
/f/ — 「フ」ではなく、上の歯と下唇で出す: format /ˈfɔːɹ.mæt/, confirm /kənˈfɝm/, successfully /səkˈsɛs.fə.li/, helpful /ˈhɛlp.fl̩/, configure /kənˈfɪɡə(ɹ)/
子音の連続 — 間に母音を入れない: calculation /ˌkælkjuˈleɪʃn̩/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, experiment /ɪkˈspɛɹ.ə.mənt/, keyboard /ˈki.bɔɹd/, preview /ˈpɹiːvjuː/

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。
まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
自分の声を録音して元の音声と比べます。calculation, notebook, output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 →

シャドーイング練習: Google Colab for Python Beginners - Visually Explained - 動画で英語スピーキングを学ぶ

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