跟读练习: The Nervous System In 9 Minutes - 通过YouTube学习英语口语
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The Great and Mighty Nervous System Or the brain as most of us call it.
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The Great and Mighty Nervous System Or the brain as most of us call it.
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What makes this organ unique is that within it lies the ability for humans to know oneself.
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This feature distinguishes and sets the human species apart from the rest of creation.
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This ability is known as consciousness or intelligence.
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To begin, let's look at the primary function of the nervous system.
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The basic purpose is to coordinate all of the activities of the body.
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It enables the body to respond and adapt to changes that occur both inside and outside the body.
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Now the nervous system is actually split into two parts.
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The central nervous system and the peripheral nervous system.
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We'll explore the peripheral later,
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but first, let's look at the central nervous system.
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The central nervous system is made up of two major structures,
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the brain and the spinal cord.
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As most people know, the brain is found within the cranium or skull.
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And there are six main sections among other structures within it.
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These six sections are the cerebrum,
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cerebellum, diencephalon, the midbrain, pons, and the medulla oblongata.
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The first section is the cerebrum.
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This is the largest section.
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It's divided into two major hemispheres,
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which are the right and left hemisphere.
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And the cerebrum is further divided into four lobes.
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These four lobes are the frontal,
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the parietal, the temporal, and the occipital.
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The frontal lobe is primarily responsible for reasoning and thought.
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The parietal is primarily responsible for integrating sensory information.
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The temporal is primarily responsible for processing auditory information from the ears.
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and the occipital is primarily responsible for processing visual information from the eyes.
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The second section of the brain is the cerebellum.
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This is the section located in the back of the head,
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below the cerebrum and above the first cervical of the neck.
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It is responsible for muscle coordination,
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balance, posture and muscle tone.
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The diencephalon section is found between the cerebrum and the midbrain.
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It contains two structures, the thalamus and the hypothalamus.
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The thalamus behaves much like a relay station and directs sensory impulses to the cerebrum.
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And the hypothalamus controls and regulates autonomic nervous system functions such as temperature,
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appetite, water balance, sleep, and blood vessel constriction and dilation.
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The hypothalamus also plays a role in the emotions such as anger,
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fear, pleasure, pain, and defection.
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The midbrain section is located below the cerebrum at the top of the brain stem.
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It is responsible for certain eye and auditory reflexes.
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The pons is located below the midbrain and in the brain stem.
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It is responsible for certain reflex actions such as chewing,
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tasting, and saliva production.
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And the last section is the medulla oblongata.
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It's the lowest part of the brain stem
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and it connects with the spinal cord and is responsible for regulating heart and blood vessel function,
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digestion, respiration, swallowing, coughing, sneezing and blood pressure.
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It's also known as the center for respiration.
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Now that we've covered the brain,
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let's take a look at the other half of the central nervous system, the spinal cord.
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The spinal cord is the link between the brain and the nerves in the rest of the body.
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The spinal cord is divided into four different regions,
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the cervical, thoracic, lumbar, and the afferent and efferent spinal nerves,
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which merge to form the peripheral nerves.
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The afferent spinal nerves are responsible for carrying information from the body to the brain.
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And the efferent spinal nerves are responsible for carrying information from the brain to the body.
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Now within this elaborate system of nerves,
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neurons and dendrites, there is a system
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that regulates the functions of the central nervous system
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which lie outside its major components such as the brain and the spinal cord.
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This system is known as the peripheral nervous system and is subdivided into two smaller systems,
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the somatic system and the autonomic nervous system.
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The somatic nervous system is responsible for carrying motor and sensory information both to and from the central nervous system.
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This system is made up of nerves that connect to the skin,
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sensory organs, and all skeletal muscles.
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The somatic system is also responsible for nearly all voluntary muscle movements as well as for processing sensory information
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that arrives via external stimuli including hearing, touch, and sight.
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The structures that allow this communication to happen between the nerves throughout the body
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and the central nervous system are known as the afferent sensory neurons and the efferent motor neurons.
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Afferent simply means conducting inward and efferent means conducting outward.
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So just like in the spinal nerves,
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the afferent neurons take information from the nerves to the central nervous system
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and the efferent neurons take information from the central nervous system to the muscle fibers throughout the body.
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The Autonomic Nervous System is further divided into the Sympathetic Nervous System and the Parasympathetic Nervous System.
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The Sympathetic Nervous System is vital to our survival.
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Have you ever heard of the fight or flight response to danger?
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The Sympathetic Nervous System revs up the body when confronted with imminent danger to either defend yourself or to escape the threat.
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The parasympathetic nervous system is the counterbalance to the sympathetic response to danger,
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whether real or imagined.
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Once the threat is gone,
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the parasympathetic brings all the systems of the body back to normal.
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Now at this point you should have a basic understanding of the nervous system,
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but let's do a quick recap.
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The basic purpose of the nervous system is to coordinate all the activities of the body.
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It enables the body to respond and adapt to changes that occur both inside and outside the body.
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The two major parts to the nervous system are the central nervous system and the peripheral nervous system.
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The central nervous system is also divided into two major structures,
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the brain and the spinal cord.
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The brain is found within the skull or cranium and it is made up of six main sections.
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These six sections are the cerebrum,
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cerebellum, diencephalon, the midbrain, pons and the medulla oblongata.
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The other half of the central nervous system is the spinal cord
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and the spinal cord is the link between the brain and the nerves and the rest of your body.
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The spinal cord is divided into four different regions.
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The cervical, thoracic, lumbar, and afferent and efferent spinal nerves which merge to form the peripheral nerves.
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Now that we know the brain and spinal cord primarily make up the central nervous system,
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let's look at the peripheral nervous system.
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The peripheral nervous system is essentially the nervous system outside of the brain and spinal cord.
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The peripheral nervous system is then subdivided into two smaller systems called the somatic nervous system and the autonomic nervous system.
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So as you can see,
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the nervous system is quite complex and this is just the tip of the iceberg.
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Thanks for watching.
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Look for more videos on the nervous system at cteskills.com.
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为何要通过这个视频练习口语？
在现代社会，口语表达能力是学习英语的关键之一。通过观看《神经系统在9分钟内》这一视频，学习者不仅可以理解神经系统的复杂性，还能够提高自己的英语口语水平。这个视频采用通俗易懂的语言和生动的解释，适合各个阶段的英语学习者。观看此视频，您将有机会模仿演讲者的语调和表达方式，从而帮助您更流利地进行英语口语练习。此外，结合shadowspeaks的技术，您能够更有效地掌握语言的韵律和节奏，这对提高您的英语口语练习至关重要。
语法与表达在上下文中的应用
- 能力动词：视频中频繁使用“is,”“enables”等动词，说明神经系统的功能和作用。这种表达方式让学习者理解如何描述能力和功能。
- 被动语态：提及“the cerebrum is divided into”时，展示了被动语态的用法，适合在描述科学事实时使用。
- 比较句：文中提到“the largest section,”展示了如何用比较句来强调不同结构的重要性，使学习者能够学习如何构建类似句型。
通过在语境中分析这些关键结构，学习者可以更自信地使用它们，提升自己的表达能力。
常见发音陷阱
在视频中，有几个词汇可能对学习者构成发音挑战，例如“cerebrum”（大脑）和“hypothalamus”（下丘脑）。发音时注意重音位置，并试着模仿演讲者的语调样式。此外，像“regulates”（调节）与“functions”（功能）这样的单词，常常因为其拼写与发音不一致而让学习者困惑，特别是在快速交谈中。掌握这些单词的准确发音将有助于提高您的提高英语发音能力，并减少口音的干扰。
使用看YouTube学英语的方法，鼓励学习者多听多说，在实际运用中巩固所学知识，提高口语的流利度和准确性。
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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。