跟读练习: Google Colab for Python Beginners - Visually Explained - 通过视频学习英语口语

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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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FOR YOU

本课的词汇与口语要点

这节口语课以视频“Google Colab for Python Beginners - Visually Explained”为素材。视频中反复出现的词有：cell, text, code, python, notebook。这段视频共有 92 个句子、1079 个单词可供跟读。讲话部分时长为 7:12。说话人语速自然，每分钟约 150 个词，接近日常对话。 87% 的单词属于英语最常用的 3,000 词，词汇容易理解。

视频中的重点词汇

视频中 15 个值得学习的单词，附发音和释义：

单词	发音	释义
calculation 名词	/ˌkælkjuˈleɪʃn̩/	計算 /计算
notebook 名词	/ˈnoʊtˌbʊk/	筆記本 /笔记本, 本子
output 名词	/ˈaʊtpʊt/	輸出 /输出
complicated 形容词	/ˈkɑm.plɪˌkeɪ.tɪd/	複雜 /复杂
format 名词	/ˈfɔːɹ.mæt/	格式, 開本 /开本
confirm 动词	/kənˈfɝm/	證實 /证实, 確認 /确认
experiment 名词	/ɪkˈspɛɹ.ə.mənt/	實驗 /实验
edit 动词	/ˈɛdɪt/	編輯 /编辑
keyboard 名词	/ˈki.bɔɹd/	鍵盤 /键盘
ignore 动词	/ɪɡˈnɔː/	無視 /无视, 忽略
curious 形容词	/ˈkjʊɹ.i.əs/	好奇, 有好奇心
select 动词	/sɪˈlɛkt/	選 /选, 挑選 /挑选
ideal 形容词	/aɪˈdi(ə)l/	理想的
helpful 形容词	/ˈhɛlp.fl̩/	有幫助 /有帮助
trash 名词	/tɹæʃ/	垃圾, 廢物 /废物

视频中出现的短语动词

单词	释义
check out 动词	退房

值得反复跟读的句子

视频中简短而完整的句子，可以直接用在日常对话里：

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.

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构	视频中的用法
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事	Have you ever wanted · We've now written · we've gone
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的	is called · isn't displayed · is automatically saved
用 “might / may” 表可能 might/may + 动词 — 有可能但不确定的事	might want · might end
“will” 表将来 will + 动词 — 决定、承诺或预测	you'll learn · we'll type · we'll write

需要注意的发音

说话人用了 19 次缩略和弱读形式，例如 we'll, we're, didn't。请按听到的简短形式来说。

“sh” 和 “zh” 音: calculation /ˌkælkjuˈleɪʃn̩/, trash /tɹæʃ/, hashtag /ˈhæʃˌtæɡ/, quotation /kwoʊˈteɪʃn̩/, shortcut /ˈʃɔːtkʌt/
长单词——注意重音位置: complicated /ˈkɑm.plɪˌkeɪ.tɪd/, experiment /ɪkˈspɛɹ.ə.mənt/, successfully /səkˈsɛs.fə.li/, independently /ˌɪndɪˈpɛndəntli/, parenthesis /pəˈɹɛn.θə.sɪs/

中文母语者容易读错的音：

/v/ — 不要读成 /w/，上齿轻触下唇: preview /ˈpɹiːvjuː/, hover /ˈhɒvə/
词尾辅音 — 要读清楚，后面不要加元音: notebook /ˈnoʊtˌbʊk/, output /ˈaʊtpʊt/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, format /ˈfɔːɹ.mæt/, experiment /ɪkˈspɛɹ.ə.mənt/
/æ/ — 嘴张大，不要读成 /e/: calculation /ˌkælkjuˈleɪʃn̩/, format /ˈfɔːɹ.mæt/, trash /tɹæʃ/, wrap /ɹæp/, arrow /ˈæɹəʊ/

如何用这段视频练习

先完整听一遍视频，不要开口，记下不认识的单词。
先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
录下自己的声音并与原声对比，特别注意 calculation, notebook, output 这类单词。

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →

跟读练习: Google Colab for Python Beginners - Visually Explained - 通过视频学习英语口语

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