跟讀練習: Science in English #3 | The Periodic Table - 通過影片學習英語口語
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57 句
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1
Ahem.
2
Good morning, everyone.
3
Today we are going to learn about the periodic table.
4
Think of it as a map of all known elements.
5
Just like a map helps you find places, the periodic table helps scientists organize the building blocks of matter.
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Let's get started.
7
Let's begin with a simple comparison.
8
The English language has only 26 letters.
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Yet, those 26 letters can create millions of words and sentences.
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Nature is very similar.
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About 118 elements combine to create everything around us.
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So where can we find all these elements?
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We can find them in the periodic table.
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Let's begin with our learning objectives.
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By the end of this lesson, you will understand what the periodic table is.
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You will learn about atomic number and atomic mass.
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You will also identify groups and periods.
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Finally, you will recognize metals, nonmetals, and metalloids.
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So what is the periodic table?
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It is a chart that organizes all known elements.
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Each element has four important pieces of information.
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Its name, its chemical symbol, its atomic number, and its atomic mass.
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Now let's look more closely at these numbers.
24
The atomic number is like an ID card.
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It tells us exactly which element it is.
26
For example, hydrogen has an atomic number of one.
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Carbon has an atomic number of six.
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has an atomic number of 1.
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Carbon has an atomic number of 6.
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Gold has an atomic number of 79.
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The atomic mass tells us how heavy an atom is compared with a hydrogen atom.
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Not all elements are the same.
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Scientists divide them into three main categories.
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Metals Metals are usually shiny and conduct electricity well.
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Nonmetals do not conduct electricity well.
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Metalloids have properties of both metals and nonmetals.
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Each category has its own unique properties.
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Now let's learn how to read the periodic table.
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The horizontal rows are called periods.
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The vertical columns are called groups.
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Here is an important idea.
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Elements in the same group have similar properties.
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They behave in similar ways during chemical reactions.
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Let's look at a few examples.
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Group 1 contains the alkali metals.
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They are very reactive.
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Group 17 contains the halogens.
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They are reactive non-metals.
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Group 18 contains the noble gases.
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These elements are very stable and rarely react with other elements.
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Let's review what we have learned today.
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The periodic table organizes all known elements.
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Each element has an atomic number and an atomic mass.
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The table is arranged into periods and groups.
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Elements in the same group have similar properties.
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The periodic table helps scientists understand and compare all known elements.
57
Thank you for listening.
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本課的詞彙與口語要點
這節 B1 級別的口語課以影片“Science in English”為素材。 影片中反覆出現的詞有：element, atomic, table, periodic, metals。 這段影片共有 57 個句子、427 個單詞可供跟讀。 講話部分時長為 3:40。 說話人語速平穩，每分鐘約 117 個詞，很適合跟讀。 只有 81% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。
影片中的重點詞彙
影片中最難的 15 個單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| atomic 形容詞 | /əˈtɑː.mɪk/ | 原子 |
| periodic 形容詞 | /ˌpɪɹiˈɑdɪk/ | 週期的 /週期的 |
| organize 動詞 | /ˈɔɹɡənaɪz/ | 組織 /組織 |
| scientist 名詞 | /ˈsaɪəntəst/ | 科學家 /科學家 |
| metalloid 名詞 | /ˈmɛtəlɔɪd/ | 類金屬 /類金屬, 半金屬 /半金屬 |
| atom 名詞 | /ˈætəm/ | 原子 |
| hydrogen 名詞 | /ˈhaɪdɹəd͡ʒ(ə)n/ | 氫 /氫 |
| alkali 名詞 | /ˈæl.kəˌlaɪ/ | 鹼 /鹼 |
| halogen 名詞 | /ˈhæl.ə.d͡ʒən/ | 鹵素 /鹵素, 鹵族 /鹵族 |
| horizontal 形容詞 | /ˌhoɹəˈzɑn.təl/ | 水平, 橫的 /橫的 |
| behave 動詞 | /bɪˈheɪv/ | 為人 /為人 |
| arrange 動詞 | /əˈɹeɪnd͡ʒ/ | 安排, 佈置 /佈置 |
| divide 動詞 | /dɪˈvaɪd/ | 分, 分裂 |
| combine 動詞 | /kəmˈbaɪn/ | 結合 /結合, 組合 /組合 |
| vertical 形容詞 | /ˈvɝ.tɪ.kəl/ | 豎的 /豎的, 垂直 |
值得反覆跟讀的句子
影片中簡短而完整的句子，可以直接用在日常對話裡：
- Let's begin with a simple comparison.
- Let's begin with our learning objectives.
- Let's look at a few examples.
- Let's review what we have learned today.
影片中的語法
說話人最常用的結構，並附上影片中的原話：
| 結構 | 影片中的用法 |
|---|---|
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | is compared · are called · is arranged |
| “will” 表將來 will + 動詞 — 決定、承諾或預測 | will understand · will learn · will also identify |
需要注意的發音
- 長單詞——注意重音位置: periodic /ˌpɪɹiˈɑdɪk/, horizontal /ˌhoɹəˈzɑn.təl/
中文母語者容易讀錯的音：
- /v/ — 不要讀成 /w/，上齒輕觸下唇: reactive /ɹiːˈæktɪv/, behave /bɪˈheɪv/, divide /dɪˈvaɪd/, vertical /ˈvɝ.tɪ.kəl/
- 詞尾子音 — 要讀清楚，後面不要加母音: atomic /əˈtɑː.mɪk/, periodic /ˌpɪɹiˈɑdɪk/, organize /ˈɔɹɡənaɪz/, scientist /ˈsaɪəntəst/, metalloid /ˈmɛtəlɔɪd/
- /æ/ — 嘴張大，不要讀成 /e/: reactive /ɹiːˈæktɪv/, atom /ˈætəm/, alkali /ˈæl.kəˌlaɪ/, halogen /ˈhæl.ə.d͡ʒən/, react /ɹiːˈækt/
如何用這段影片練習
- 先完整聽一遍影片，不要開口，記下不認識的單詞。
- 用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
- 錄下自己的聲音並與原聲對比，特別注意 atomic, periodic, organize 這類單詞。
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。