跟读练习: Lighthouse Lab – Floating and Sinking - 通过视频学习英语口语

这段视频共有 54 个句子、348 个单词可供跟读。 讲话部分时长为 3:17。 说话人语速较慢，每分钟约 106 个词，你有足够的时间模仿每一个音。 只有 79% 的单词属于英语最常用的 3,000 词，词汇难度较高。

视频中的重点词汇

视频中 15 个不太常见的单词，附发音和释义：

• dense /ˈdɛns/ (形容词) — 密, 稠密. Having relatively high density.
• float /fləʊt/ (动词) — 浮, 漂浮. To be supported by a fluid of greater density (than the object).
• sink /ˈsɪŋk/ (动词) — 沉, 下沉. To descend or submerge (or to cause to do so) into a liquid or similar substance.
• bath /bɑːθ/ (名词) — 浴缸, 浴盆. A tub or pool which is used for bathing: bathtub.
• rubber /ˈɹʌbɚ/ (名词) — 橡膠 /橡胶, 橡皮. Pliable material derived from the sap of the rubber tree; a hydrocarbon biopolymer of isoprene.
• density /ˈdɛn.sə.ti/ (名词) — 密度. A measure of the mass of matter contained by a unit volume.
• wooden /ˈwʊdn̩/ (形容词) — 木製 /木制. Made of wood.
• painful /ˈpeɪn.fl̩/ (形容词) — 痛苦的, 疼痛的. Causing pain or distress, either physical or mental.
• clay /kleɪ/ (名词) — 黏土. A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics.
• duck /dʌk/ (名词) — язы, 鴨 /鸭. Any of certain aquatic birds of the family Anatidae, having a flat bill and webbed feet, distinguished from swans and geese by generally being smaller and…
• swim /swɪm/ (动词) — 游泳. To move through the water, without touching the bottom; to propel oneself in water by natural means.
• coin /ˈkoɪ̯n/ (名词) — 硬幣 /硬币, 銅錢 /铜钱. A piece of currency, usually metallic and in the shape of a disc, but sometimes polygonal, or with a hole in the middle.
• plug /plʌɡ/ (名词) — 插頭 /插头. A pronged connecting device which fits into a mating socket, especially an electrical one.
• marble /ˈmɑɹ.bəl/ (名词) — 大理石. A metamorphic rock of crystalline limestone.
• prediction /pɹɪˈdɪkʃən/ (名词) — 預言 /预言, 預估 /预估. A statement of what will happen in the future.

视频中出现的短语动词

• go ahead /ˌɡoʊ əˈhɛd/ (动词) — 請便 /请便. To proceed with; to begin.
• look at (动词) — 觀察 /观察, 看. To observe or watch.

需要注意的发音

说话人用了 5 次缩略和弱读形式，例如 I'm, wasn't, you'll。请按听到的简短形式来说。

如何用这段视频练习

1. 先完整听一遍视频，不要开口，记下不认识的单词。
2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
3. 录下自己的声音并与原声对比，特别注意 dense, float, sink 这类单词。

视频中的语法

说话人最常用的结构，并附上视频中的原话：