跟讀練習: How Big Is The Biggest Black Hole? - 通過影片學習英語口語
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17 句
如果句子過短或過長，請點選 Edit 進行調整。
1
The size of black holes is insane.
2
One of the smallest known black holes is J1650.
3
Its diameter is about as long as Manhattan, but it's got a mass of 3 .8 of our suns.
4
Step up is this black hole, Messier 15.
5
It's about the size of Mars, with a mass of 4 ,000 suns.
6
Now we're getting to the lower limit of what's considered a supermassive black hole.
7
This one's about the same size as our sun, but 100 ,000 times its mass.
8
And get this, the black hole at the center of our galaxy, Sagittarius A, is about this size compared to the sun to our sun and has 4 million times its mass.
9
We captured this image of it in 2022.
10
Now comes the truly insane.
11
The black hole in galaxy M87 weighs 5 .4 billion suns.
12
It was the first to be imaged in 2019.
13
And then one of the largest black holes ever discovered weighs a whopping 66 billion times more than our sun.
14
And finally there's Phoenix A star, estimated to have a mass of a hundred billion suns.
15
We haven't measured it directly, and ton 618 is farther away than Phoenix A *.
16
So we're seeing it farther back in time.
17
We made a whole longer video all about black holes, so subscribe.
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本課的詞彙與口語要點
這節 B2 級別的口語課以影片“How Big Is The Biggest Black Hole?”為素材。 影片中反覆出現的詞有：hole, sun, mass, size, billion。 這段影片共有 17 個句子、206 個單詞可供跟讀。 講話部分時長為 1:10。 說話人語速自然，每分鐘約 176 個詞，接近日常對話。 只有 79% 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 10 個單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| insane 形容詞 | /ɪnˈseɪn/ | 精神失常, 精神錯亂 /精神錯亂 |
| galaxy 名詞 | /ˈɡæl.ək.si/ | 恆星系 /恆星系, 群星 |
| weigh 動詞 | /weɪ/ | 稱重 /稱重 |
| compare 動詞 | /kəmˈpɛɚ/ | 比, 比較 /比較 |
| capture 動詞 | /ˈkæp.(t)ʃɚ/ | 捕獲 /捕獲, 佔領 /佔領 |
| discover 動詞 | /dɪˈskʌvə/ | 發現 /發現, 發覺 /發覺 |
| estimate 名詞 | /ˈɛs.tɪ.mət/ | 估計 /估計 |
| diameter 名詞 | /daɪˈæmɪdɚ/ | 直徑 /直徑 |
| subscribe 動詞 | /səbˈskɹaɪb/ | 簽署 /簽署 |
| hole 名詞 | /hoʊl/ | 孔, 洞 |
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 | haven't measured |
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | be imaged |
需要注意的發音
說話人用了 3 次縮略和弱讀形式，例如 we're, haven't。請按聽到的簡短形式來說。
- “sh” 和 “zh” 音: capture /ˈkæp.(t)ʃɚ/, measure /ˈmeɪ.ʒɚ/
中文母語者容易讀錯的音：
- 詞尾子音 — 要讀清楚，後面不要加母音: estimate /ˈɛs.tɪ.mət/, subscribe /səbˈskɹaɪb/
- /æ/ — 嘴張大，不要讀成 /e/: galaxy /ˈɡæl.ək.si/, capture /ˈkæp.(t)ʃɚ/, diameter /daɪˈæmɪdɚ/
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 insane, galaxy, weigh 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。