跟读练习: Your Brain on Drugs: Marijuana - 通过视频学习英语口语

正在创建课程...
1
For centuries, humans have been using substances to alter their state of mind.
2
From caffeine, cigarettes and alcohol to more extreme drugs.
3
But as the most commonly used illicit drug in North America, Where does marijuana fit in and how exactly does it affect your brain?
4
First, we need to understand how the brain functions.
5
Neurons are the cells that process information in the brain.
6
By releasing chemicals called neurotransmitters from the axon of one neuron to the dendrite of another they change the electrical charge of the receiving neuron consequently exciting or inhibiting it.
7
If excited, the signal is passed on.
8
Though it sounds simple these signals work together and the effect is quickly compouned into complex configurations within milliseconds flashing over the entire brain.
9
This is what happens every single time you think, breathe or move.
10
So what is going on inside your brain when you’re smoking marijuana?
11
Well unlike alcohol, which contains molecules nothing like those in our body, cannabis contains molecules that resemble those produced in our very own brains: cannabonoids.
12
Although naturally these cannabonoids circulate at much lower quantities compared to the large influx imposed by smoking, specifically the chemical tetrahydrocannabinol or THC resembles a natural transmitter called “anandamide”.
13
These cannabonoids are specialized neurotransmitters released by neurons having just fired.
14
Neurons temporarily become unresponsive after firing to prevent them from overracting or being too dominant.
15
This allows your brain to function in a calm and controlled manner.
16
But cannabonoids interrupt this approach in some parts of the brain.
17
Instead, they remove the refractory period of neurons that are already active and can cause your thoughts, imagination, and perception to utterly magnify itself.
18
This means, once you begin your train of thought it becomes the most significant and profound thing ever.
19
You can’t see the big picture or even recall your last epiphany because you’re caught up in the momentum of a particular idea and your neurons keep firing until a new idea takes hold and you go off on a new tangent.
20
These cannabonoids also affect the levels of dopamine and norepinephrine in your brain often leading to a sense of euphoria, relaxation, pain modulation and general enhancement of an experience, though sometimes causing anxiety.
21
Furthermore, there are cannabonoid receptors in areas controlling short-term memory, learning, coordination, movement control and higher cognitive functions.
22
Got a burning question you want answered?
23
Ask them in the comments or on Facebook and Twitter and subscribe for more weekly science videos.

为什么与这个视频练习口语?

在学习英语时,口语练习是非常关键的一环。通过观看和模仿《你的大脑与药物:大麻》这段视频,你可以充分了解语言的使用背景及其情感表达。视频内容涉及大脑如何工作以及大麻对思维的影响,这为你提供了实践口语的真实语境。在这个过程中,你可以学习到如何用口头语言描述复杂科学概念,并提升你的英语表达能力。

此外,利用“影子跟读”(shadow speak)法,你可以通过重复视频中的句子来磨练你的发音和流利度。而这样深入的内容也使你在进行雅思口语练习(雅思口语练习)时能够有更具体的内容支持,增强你在考试时的自信心及应对能力。

语法与表达在语境中的应用

在视频中,演讲者使用了一些可以供学习者参考的语法结构和表达方式。以下是几个关键的例子:

  • “这意味着……”(This means...)- 这种表达方式用于引导听众理解概念的核心。
  • “与……相比”(Unlike...)- 这是一个比较句式,用于强调不同之处,增强论证效果。
  • “神经元在释放……”(Neurons are released...)- 这样的结构帮助表述因果关系,适合在科学讨论中使用。
  • “影响……的水平”(Affects the levels of...)- 通过说明影响的范围,演讲者为其观点提供了支持。

你可以在“英语影子跟读”过程中,将这些句式引入到自己的口语练习中,提升你对复杂句子的掌握。

常见发音陷阱

在视频中,有几个词汇及其发音可能会让学习者感到挑战:

  • “神经递质”(neurotransmitters) - 这个词较长且有多个音节,练习时要特别注意每个音节的清晰度。
  • “大麻”(cannabis) - 常被误读,学习者应该多加练习以确保正确发音。
  • “欣快感”(euphoria) - 这样的词在流利说的时候容易出错,特别是在快节奏的情况下。

通过“影子跟读”法,你可以有效矫正自己的发音,从而提升口语的流利度和准确性,使你在各种场合中都能自信地表达自己。

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 →