Shadowing Practice: Humanity’s Real Plan to Stop This Asteroid (Feat. Mark Rober) - Learn English Speaking with Video
Vocabulary and speaking notes for this lesson
This B2 speaking lesson is built on the video “Humanity’s Real Plan to Stop This Asteroid”. This video has 343 sentences and 3751 words to shadow. The speech runs for 21:39. The speaker talks at a natural 173 words per minute, close to everyday conversation. 83% of the words are among the 3,000 most common in English; the rest is worth studying before you start.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| asteroid noun | /ˈæst(ə)ɹɔɪd/ | A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often… |
| spacecraft noun | /ˈspeɪsˌkɹæft/ | A vehicle that travels through space. |
| telescope noun | /ˈtɛl.əˌskoʊp/ | A monocular optical instrument that magnifies distant objects, especially in astronomy. |
| meter noun | /ˈmitəɹ/ | A device that measures things. |
| astronomer noun | /əˈstɹɒn.ə.mə/ | One who studies astronomy, the stars or the physical universe; a scientist whose area of research is astronomy or astrophysics. |
| observatory noun | /əbˈzɜːvət(ə)ɹi/ | A place where stars, planets and other celestial bodies are observed, usually through a telescope; also place for observing meteorological or other natural… |
| orbit noun | /ˈɔɹ.bɪt/ | An elliptical movement of an object about a celestial object or Lagrange point, especially a periodic elliptical revolution. |
| comet noun | /ˈkɒmɪt/ | A small Solar System body consisting mainly of volatile ice, dust and particles of rock whose very eccentric solar orbit periodically brings it close enough to… |
| explode verb | /ɪkˈsploʊd/ | To fly apart with sudden violent force; to blow up, to burst, to detonate, to go off. |
| observer noun | /əbˈzɝvɚ/ | One who makes observations, monitors or takes notice. |
| smash verb | /smæʃ/ | To break (something brittle) violently. |
| awake verb | /əˈweɪk/ | To become conscious after having slept. |
| chill verb | /tʃɪl/ | To lower the temperature of something; to cool. |
| impactor noun | /ɪmˈpæktɚ/ | Any of several machines or devices in which a part impacts on another, or on a material. |
| kinetic adjective | /kɪˈnɛtɪk/ | Relating to motion. |
Phrasal verbs you will hear
| Word | Meaning |
|---|---|
| turn out verb | To end up; to result. |
| come back verb | To return to a place. |
| find out verb | To discover, as by asking or investigating. |
| stay up verb | To remain awake; to not go to bed. |
| bounce off verb | To test (ideas) on someone. |
| break apart verb | To dismantle something into its base components. |
| build out verb | To develop or expand (a system, structure, project, etc.). |
| burn up verb | To catch fire and burn until destroyed. |
Sentences worth repeating
Short, complete lines from the video that you can reuse in everyday conversation:
- How would we know?
- What do you got?
- Is that what I think it is?
- Why didn't we see it before?
- How big do we get that asteroid?
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Conditional sentences if + clause, will/would + verb — a condition and its result | if you waited until the morning, you'd probably · if the day ever comes, we'll be |
| Present perfect have/has + past participle — a past action that still matters now | have been · they've invited · have scanned |
| Passive voice be + past participle — the focus is on what happens, not who does it | is photographed · is called · was formed |
| Relative clauses who / which + clause — extra information about a person or thing | freshness, which makes · ways, which is · tractor, which is |
Pronunciation to watch
The speaker uses 69 contractions and reduced forms, such as I'm, we're, you're. Say them the short way, as you hear them.
- The “th” sounds: thermal /ˈθɜːməl/, altogether /ɔl.tuˈɡɛð.ɚ/, mathematics /mæθ(.ə)ˈmæt.ɪks/
- The “sh” and “zh” sounds: smash /smæʃ/, fictional /ˈfɪkʃənəl/, perfection /pɚˈfɛk.ʃən/, publish /ˈpʌblɪʃ/, calculation /ˌkælkjuˈleɪʃn̩/
- Long words — get the stress right: astronomer /əˈstɹɒn.ə.mə/, observatory /əbˈzɜːvət(ə)ɹi/, genuinely /ˈd͡ʒɛn.ju.ɪn.li/, astronomical /ˌæs.tɹəˈnɑm.ɪ.kəl/, trajectory /tɹəˈd͡ʒɛktəɹi/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Start at 0.75× speed, shadow it sentence by sentence, then go back to normal speed once it feels easy.
- Record yourself and compare with the original, paying attention to words like asteroid, spacecraft, telescope.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.




























