跟读练习: Cell vs. virus: A battle for health - Shannon Stiles - 通过YouTube学习英语口语
C2
You're in line at the grocery store when,
⏸ 已暂停
速度:
所有句子65 句
如果句子过短或过长，请点击 Edit 进行调整。
1
You're in line at the grocery store when,
2
uh-oh, someone sneezes on you.
3
The cold virus is sucked inside your lungs and lands on a cell on your airway lining.
4
Every living thing on Earth is made of cells,
5
from the smallest one-celled bacteria to the giant blue whale to you.
6
Each cell in your body is surrounded by a cell membrane,
7
a thick, flexible layer made of fats and proteins that surrounds and protects the inner components.
8
It's semi-permeable, meaning that it lets some things pass in and out, but blocks others.
9
The cell membrane is covered with tiny projections.
10
They all have functions, like helping cells adhere to their neighbors or binding to nutrients the cell will need.
11
Animal and plant cells have cell membranes,
12
Apparently, plant cells have a cell wall,
13
which is made of rigid cellulose that gives the plant structure.
14
The virus that was sneezed into your lungs is sneaky.
15
Pretending to be a friend,
16
it attaches to a projection on the cell membrane,
17
and the cell brings it through the cell membrane and inside.
18
When the virus gets through,
19
the cell recognizes its mistake.
20
An enemy is inside.
21
Special enzymes arrive at the scene and chop the virus to pieces.
22
They then send one of the pieces back through the cell membrane,
23
where the cell displays it to warn neighboring cells about the invader.
24
A nearby cell sees the warning and immediately goes into action.
25
It needs to make antibodies,
26
proteins that will attack and kill the invading virus.
27
This process starts in the nucleus.
28
The nucleus contains our DNA,
29
the blueprint that tells our cells how to make everything our bodies need to function.
30
A certain section of our DNA contains instructions that tell our cells how to make antibodies.
31
Enzymes in the nucleus find the right section of DNA,
32
then create a copy of these instructions called messenger RNA.
33
The messenger RNA leaves the nucleus to carry out its orders.
34
The messenger RNA travels to a ribosome.
35
There can be as many as 10 million ribosomes in a human cell,
36
all studded along a ribbon-like structure called the endoplasmic reticulum.
37
This ribosome reads the instructions from the nucleus.
38
It takes amino acids and links them together one by one,
39
creating an antibody protein that will go fight the virus.
40
But before it can do that,
41
the antibody needs to leave the cell.
42
The antibody heads to the Golgi apparatus.
43
Here it's packed up for delivery outside the cell,
44
enclosed in a bubble made of the same material as the cell membrane.
45
The Golgi apparatus also gives the antibody directions,
46
telling it how to get to the edge of the cell.
47
When it gets there, the bubble surrounding the antibody fuses to the cell membrane.
48
The cell ejects the antibody,
49
and it heads out to track down the virus.
50
The leftover bubble will be broken down by the cell's lysosomes and its pieces recycled over and over again.
51
Where did the cell get the energy to do all this?
52
That's the role of the mitochondria.
53
To make energy, the mitochondria takes oxygen,
54
this is the only reason we breathe it,
55
and adds electrons from the food we eat to make water molecules.
56
That process also creates a high-energy molecule called ATP,
57
which the cell uses to power all of its parts.
58
Plant cells make energy a different way.
59
They have chloroplasts that combine carbon dioxide and water with light energy from the sun to create oxygen and sugar,
60
a form of chemical energy.
61
All the parts of a cell have to work together to keep things running smoothly.
62
And all the cells of your body have to work together to keep you running smoothly.
63
That's a whole lot of cells.
64
Scientists think there are about 37 trillion of them.
65
you
下载应用
AI 为你说出的每个句子打分
TRENDING
热门
App Store 和 Google Play 评分 4.9/5
Shadowing English
移动端
随时随地使用 Shadowing English 应用学习英语。今天就提高您的沟通技巧！
跟踪您的学习进度
AI 评分和纠错
丰富的视频库
为什么通过这个视频练习口语？
在这个视频中，Shannon Stiles 讲解了细胞与病毒之间的激烈斗争。在你观看的时候，你不仅可以获得生物学知识，还能提高你的英语发音和口语能力。通过模仿视频中的语调和节奏，你可以体验到shadowing site的独特魅力。模仿这种说话方式，有助于提升你的语言流利度和自信心。
通过不断练习，你将能在实际生活中更自信地使用英语，例如在医疗、科学或日常对话中。这不仅能帮助你提高英语发音，也能帮助你理解复杂概念并用英语表达出来。记得利用看YouTube学英语的方法，听得越多，你的口语能力就会越好。
语法与表达在语境中的应用
在视频中，有几个重要的语法结构和表达方式值得注意：
- 条件句: Shannon 使用了条件句来描述病毒入侵的情况，例如：“如果病毒进入细胞，细胞会做出反应。”这种表达方式能够帮助你在叙述潜在情况时更加准确。
- 被动语态: “病毒被细胞吸收。”被动语态在科学描述中使用广泛，让句子更为客观，适合在正式场合中使用。
- 动词时态: 使用过去式与现在时的切换，例如“细胞识别了错误，它正在回收病毒的碎片。”这种时态的变化能够增强叙述的连贯性，让你的表达更具逻辑性。
- 名词短语: 诸如“细胞膜”和“抗体蛋白”等名词短语有助于简化复杂概念，通过明确的词汇能让你在专业场合中表达得更为清晰。
常见发音陷阱
在视频中，有一些词汇特别容易发错，尤其是对于非母语的人来说。例如：
- cell（细胞）与sell（卖）: 这两个词的发音相似，但意义截然不同。确保你能正确区分这两个单词。
- membrane（膜）: 这个词相对较长，注意它的音节分隔，避免发音模糊。
- antibody（抗体）: 不要让这个词的长音干扰了你的发音，确保每个音节都清晰可辨。
透过不断的练习和shadow speech的技巧，你能够克服这些发音挑战，大幅度提高你的英语口语能力。记得持续使用视频内容进行跟读，帮助自己在这个学习过程中更快速有效地进步。
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。