Shadowing Practice: We Let $200 GPT-Pro Think for 7 Days on Unsolved Math - Learn English Speaking with Video
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Vocabulary and speaking notes for this lesson
This C1 speaking lesson is built on the video “We Let $200 GPT-Pro Think for 7 Days on Unsolved Math”. This video has 182 sentences and 2884 words to shadow. The speech runs for 12:17. The speaker talks fast, about 235 words per minute, so expect linked and reduced sounds. 84% 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 |
|---|---|---|
| codex noun | /ˈkoʊdɛks/ | An early manuscript book, especially one bound in the modern manner, by joining pages, as opposed to a rolled scroll. |
| constraint noun | /kənˈstɹeɪnt/ | Something that constrains; a restriction. |
| summarize verb | /ˈsʌməˌɹaɪz/ | To prepare a summary of (something). |
| matrix noun | /ˈmeɪ.tɹɪks/ | The cavity or mold in which anything is formed. |
| numerical adjective | /n(j)uːˈmɛɹ.ɪ.kəl/ | Of or pertaining to numbers. |
| inequality noun | /ˌɪn.ɪˈkwɑ.lɪ.ti/ | A condition or state (of social, cultural, or legal matters) that is not equal; especially, such a condition that is thereby also unfair. |
| bump noun | /bʌmp/ | A light blow or jolting collision. |
| analytic adjective | /ˌænəˈlɪtɪk/ | Of, or relating to any form of analysis, or to analytics. |
| zeta noun | /ˈzeɪtə/ | The sixth letter of the modern Greek alphabet (Ζ, ζ) preceded by epsilon (Ε, ε) and followed by eta, (Η, η); or the seventh letter in the ancient Greek… |
| token noun | /ˈtoʊkən/ | Something serving as an expression of something else. |
| dimension noun | /daɪˈmɛn.ʃən/ | A single aspect of a given thing. |
| codec noun | A device or program capable of performing transformations on a data stream or signal. | |
| coefficient noun | /ˌkoʊ.ɪˈfɪʃənt/ | A constant by which an algebraic term is multiplied. |
| rigorously adverb | In a rigorous manner. | |
| systematically adverb | /ˌsɪs.təˈmæt.ɪ.kli/ | In a systematic manner; organizedly or methodically. |
Phrasal verbs you will hear
| Word | Pronunciation | Meaning |
|---|---|---|
| set up verb | /ˌsɛt ˈʌp/ | To make ready for use. |
| come across verb | To change sides; to cross over to work for the opposition. | |
| come out verb | /ˌkʌm ˈaʊt/ | To be discovered; to be revealed. |
| come up with verb | To manage to produce, deliver, or present (something) by inventing, creating, thinking of, or obtaining it. | |
| end up verb | To bring to a conclusion. | |
| go through verb | To travel from one end of something to the other. | |
| reach out verb | To extend one's hand(s) forward; to reach for something. | |
| read through verb | To thoroughly read something to check or proofread it. |
Sentences worth repeating
Short, complete lines from the video that you can reuse in everyday conversation:
- That's my understanding of it, okay?
- I'm surprised that it's got a bump here.
- It's not really true, I feel.
- Do you see what I mean?
- I mean, are you for real?
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Present perfect continuous have/has been + -ing — an action that started earlier and is still going on | that's been thinking · it's been doing · I've been continuing |
| Present perfect have/has + past participle — a past action that still matters now | has accelerated · have been proven · I've already proven |
| Passive voice be + past participle — the focus is on what happens, not who does it | being solved · have been proven · have been solved |
| Relative clauses who / which + clause — extra information about a person or thing | line, which is · subscriptions, which is · minutes, which is |
Pronunciation to watch
The speaker uses 75 contractions and reduced forms, such as I'm, I've, we're. Say them the short way, as you hear them.
- The “th” sounds: nonetheless /ˌnʌnðəˈlɛs/, logarithmic /ˌlɒɡəˈɹɪðmɪk/, mathematical /ˌmæθ(.ə)ˈmæt.ɪ.kəl/, thesis /ˈθisɪs/
- The “sh” and “zh” sounds: dimension /daɪˈmɛn.ʃən/, coefficient /ˌkoʊ.ɪˈfɪʃənt/, experimentation /ɪkˌspɛɹ.ə.mənˈteɪ.ʃən/, gibberish /ˈd͡ʒɪ.bə.ɹɪʃ/, hallucination /həˌluːsɪˈneɪʃən/
- Long words — get the stress right: numerical /n(j)uːˈmɛɹ.ɪ.kəl/, inequality /ˌɪn.ɪˈkwɑ.lɪ.ti/, analytic /ˌænəˈlɪtɪk/, coefficient /ˌkoʊ.ɪˈfɪʃənt/, systematically /ˌsɪs.təˈmæt.ɪ.kli/
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 codex, constraint, summarize.
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.












