Shadowing Practice: Most Expensive Mistakes In History - Learn English Speaking with Video
Vocabulary and speaking notes for this lesson
This B2 speaking lesson is built on the video “Most Expensive Mistakes In History”. The speaker keeps coming back to these words: billion, cost, project. This video has 454 sentences and 6332 words to shadow. The speech runs for 45:33. The speaker talks at a steady 139 words per minute, a comfortable pace for shadowing. Only 76% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| crab noun | /kɹæb/ | Any crustacean of the infraorder Brachyura, having five pairs of legs, the foremost of which are in the form of claws, and a carapace. |
| spillway noun | A path designed to take away overflow safely. | |
| costly adjective | /ˈkɒst.li/ | Of high cost; expensive. |
| collapse verb | /kəˈlæps/ | To break apart and fall down suddenly; to cave in. |
| devastate verb | /ˈdɛv.ə.steɪt/ | To ruin many or all things over a large area, such as most or all buildings of a city, or cities of a region, or trees of a forest. |
| pavilion noun | /pəˈvɪljən/ | An ornate tent. |
| coin noun | /ˈkoɪ̯n/ | A piece of currency, usually metallic and in the shape of a disc, but sometimes polygonal, or with a hole in the middle. |
| demolition noun | /ˌdɛm.əˈlɪʃ.ən/ | The process of demolishing or destroying buildings or other structures. |
| expo noun | An exposition (type of public exhibition). | |
| taxpayer noun | /ˈtakspeɪə/ | A person who is subject to, liable for, or pays tax. |
| sensor noun | /ˈsɛn.sɚ/ | A device or organ that detects certain external stimuli and responds in a distinctive manner. |
| ambitious adjective | /æmˈbɪʃ.əs/ | Having or showing ambition; wanting a lot of power, honor, respect, superiority, or other distinction. |
| buck noun | /ˈbʌk/ | A male deer, antelope, sheep, goat, rabbit, hare, and sometimes the male of other animals such as the hamster, ferret, salmonid, shad, skunk and kangaroo. |
| astonish verb | /əˈstɑnɪʃ/ | To surprise greatly. |
| blunder noun | /ˈblʌn.dɚ/ | A clumsy or embarrassing mistake. |
Phrasal verbs you will hear
| Word | Pronunciation | Meaning |
|---|---|---|
| end up verb | To bring to a conclusion. | |
| throw away verb | To discard (trash, garbage, or the like), to toss out, to put in the trash. | |
| turn out verb | To end up; to result. | |
| carry out verb | /ˈkæ.ɹi aʊt/ | To hold while moving it out. |
| check out verb | To record the departure or withdrawal of someone or something (such as guests, employees, books, etc.). | |
| come across verb | To change sides; to cross over to work for the opposition. | |
| come around verb | /kʌ.məˈɹaʊnd/ | To change one's mind, especially to begin to agree or appreciate what one was reluctant to accept at first. |
| come back verb | To return to a place. |
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 it loses control, it will explode · if it was built today, it would cost |
| Present perfect have/has + past participle — a past action that still matters now | You've probably heard · has claimed · have put |
| Passive voice be + past participle — the focus is on what happens, not who does it | have been avoided · had been hired · was positioned |
| Relative clauses who / which + clause — extra information about a person or thing | cars which were · nanometers, which can · costs, which were |
Pronunciation to watch
The speaker uses 29 contractions and reduced forms, such as they'd, wouldn't, didn't. Say them the short way, as you hear them.
- The “sh” and “zh” sounds: demolition /ˌdɛm.əˈlɪʃ.ən/, ambitious /æmˈbɪʃ.əs/, astonish /əˈstɑnɪʃ/, calculation /ˌkælkjuˈleɪʃn̩/, bombshell /ˈbɑmʃɛl/
- Long words — get the stress right: demolition /ˌdɛm.əˈlɪʃ.ən/, reportedly /ɹɪˈpɔːtɪdli/, astronomical /ˌæs.tɹəˈnɑm.ɪ.kəl/, calibration /ˌkæl.ɪˈbɹeɪ.ʃən/, dilapidated /dɪˈlæpɪdeɪtəd/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like crab, spillway, costly.
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.











