跟讀練習: Introduction to Chemistry - 通過影片學習英語口語
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24 句
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1
Hey guys, I'm Professor Dave, and I want to tell you about chemistry.
2
What is chemistry?
3
Why should we know about it?
4
Chemistry is the study of what matter is made of and how it changes.
5
It's important to know because it describes everything around us, every material, almost every process.
6
If we truly want to understand how our bodies work, how diseases operate and how to cure them, which foods are nutritious and which are not, we must learn chemistry.
7
Unless you fundamentally understand molecules, all you can do is repeat things you've heard.
8
But how do you know if what you've heard is right?
9
If you know chemistry, you can compare what someone says to how you know that molecules behave.
10
If there is a glaring contradiction, you can easily reject false information, and you won't be taken advantage of for someone else's personal gain.
11
We should be able to think critically like this in every avenue of life, be it health, politics, or otherwise.
12
With this general chemistry series, I have two goals.
13
One is to help high school and undergraduate students taking their first chemistry course.
14
Please use these tutorials to supplement your lectures in any way that is helpful to you.
15
But because this is introductory material, and given that chemistry is the central science,
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this general chemistry series is also meant for anyone who wants to learn science with no prior knowledge and for any reason.
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I will break down concepts as simply as possible so that anyone can learn them.
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There will be moments where we go over practice problems that are more geared towards students in a class.
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But feel free to learn these too, because the predictive power of mathematics is what proves the legitimacy of our science.
20
If you are watching this clip and intend to view the entire series, please click on the general chemistry playlist on the Professor Dave homepage to view in the suggested order.
21
When we check our comprehension after a lesson, feel free to pause the clip so you have plenty of time to think before I tell you the answer.
22
If you need to watch a clip more than once to fully understand it, that's okay.
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And if you have any questions about what you've learned, feel free to email me at ProfessorDaveExplains at gmail .com.
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Enjoy your newfound knowledge.
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本課的詞彙與口語要點
這節 C1 級別的口語課以影片“Introduction to Chemistry”為素材。 影片中反覆出現的詞有：chemistry, learn, clip, science。 這段影片共有 24 個句子、396 個單詞可供跟讀。 講話部分時長為 2:01。 說話人語速較快，每分鐘約 196 個詞，會出現較多連讀和弱讀。 85% 的單詞屬於英語最常用的 3,000 詞，其餘的詞建議在練習前先學一下。
影片中的重點詞彙
影片中最難的 13 個單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| molecule 名詞 | /ˈmɑ.lɪ.kjul/ | 分子 |
| contradiction 名詞 | /ˌkɑːntɹəˈdɪkʃən/ | 反對, 反駁 |
| nutritious 形容詞 | /nuːˈtɹɪʃəs/ | 有營養 /有營養 |
| introductory 形容詞 | /ˌɪntɹəˈdʌktəɹi/ | 介紹的 /介紹的, 引導的 /引導的 |
| comprehension 名詞 | /ˌkɑmpɹɪˈhɛnʃn̩/ | 理解, 瞭解 /瞭解 |
| playlist 名詞 | /ˈpleɪˌlɪst/ | 播放列表, 歌單 /歌單 |
| legitimacy 名詞 | /ləˈd͡ʒɪtɪməsi/ | 合法 |
| fundamentally 副詞 | 根本地, 從根本上 | |
| tutorial 名詞 | /ˌtjuːˈtɔːɹɪəl/ | 輔導 /輔導, 教程 |
| undergraduate 名詞 | 本科生 | |
| pause 名詞 | /pɔːz/ | 停頓 /停頓, 暫停 /暫停 |
| behave 動詞 | /bɪˈheɪv/ | 為人 /為人 |
| intend 動詞 | /ɪnˈtɛnd/ | 打算, 想要 |
影片中出現的短語動詞
| 單詞 | 釋義 |
|---|---|
| break down 動詞 | 壞了 /壞了, 出故障 |
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 |
|---|---|
| 現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事 | you've heard · you've learned |
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | is made · won't be taken · is also meant |
需要注意的發音
說話人用了 5 次縮略和弱讀形式，例如 you've, I'm, won't。請按聽到的簡短形式來說。
- “sh” 和 “zh” 音: contradiction /ˌkɑːntɹəˈdɪkʃən/, nutritious /nuːˈtɹɪʃəs/, comprehension /ˌkɑmpɹɪˈhɛnʃn̩/
- 長單詞——注意重音位置: contradiction /ˌkɑːntɹəˈdɪkʃən/, introductory /ˌɪntɹəˈdʌktəɹi/, legitimacy /ləˈd͡ʒɪtɪməsi/, critically /ˈkɹɪt.ɪ.kə.li/
中文母語者容易讀錯的音：
- /v/ — 不要讀成 /w/，上齒輕觸下唇: predictive /pɹɪˈdɪk.tɪv/, behave /bɪˈheɪv/
- 詞尾子音 — 要讀清楚，後面不要加母音: newfound /ˈnjuː.faʊnd/, nutritious /nuːˈtɹɪʃəs/, predictive /pɹɪˈdɪk.tɪv/, playlist /ˈpleɪˌlɪst/, pause /pɔːz/
- /r/ 和 /l/ 的區別: tutorial /ˌtjuːˈtɔːɹɪəl/, critically /ˈkɹɪt.ɪ.kə.li/
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。
- 先用 0.75 倍速逐句跟讀，熟練之後再回到正常速度。
- 錄下自己的聲音並與原聲對比，特別注意 molecule, contradiction, nutritious 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。