Shadowing Practice: How To Extract Your DNA At Home 😮 - Learn English Speaking with Video
Creating lesson...
1
Take a sip of salt water, then swish it around your mouth really hard.
2
As it moves across your cheeks, it scrapes off thousands of loose cells.
3
Now spit the water into a cup and add a little dish soap.
4
The soap works the same way it does on dishes, breaking apart fat and grease.
5
And since the outside of your cells is wrapped in a fatty membrane, they split open.
6
Your DNA leaks out into the liquid, but you still can't see it.
7
So next, gently pour cold rubbing alcohol on top, which will pull the DNA out of the water and make the tiny strands clump together.
8
After a few minutes, you'll see cloudy white strings floating in the cup, and that is your DNA.
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Vocabulary and speaking notes for this lesson
This B1 speaking lesson is built on the video “How To Extract Your DNA At Home 😮”. This video has 8 sentences and 127 words to shadow. The speech runs for 0:43. The speaker talks at a natural 176 words per minute, close to everyday conversation.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| soap noun | /soʊp/ | A metallic salt derived from a fatty acid, commonly used in cleaning products. |
| dish noun | /dɪʃ/ | A vessel such as a plate for holding or serving food, often flat with a depressed region in the middle. |
| scrape verb | /skɹeɪp/ | To draw (an object, especially a sharp or angular one), along (something) while exerting pressure. |
| cloudy adjective | /ˈklaʊ̯diː/ | Covered with or characterised by clouds. |
| strand noun | /ˈstɹænd/ | Each of the strings which, twisted together, make up a yarn, rope or cord. |
| grease noun | /ɡɹis/ | Animal fat in a melted or soft state. |
| membrane noun | /ˈmɛm.bɹeɪn/ | A mechanical, thin, flat flexible part that can deform or vibrate when excited by an external force. |
| spit verb | /spɪt/ | To evacuate (saliva or another substance) from the mouth, etc. |
| float verb | /fləʊt/ | To be supported by a fluid of greater density (than the object). |
| cheek noun | /t͡ʃiːk/ | The soft skin on each side of the face, below the eyes; the outer surface of the sides of the oral cavity. |
| rub verb | /ɹʌb/ | To move (one object) while maintaining contact with another object over some area, with pressure and friction. |
| gently adverb | /ˈd͡ʒɛntli/ | Without strong force or quickness: softly, lightly. |
| leak noun | /liːk/ | A crack, crevice, fissure, or hole which admits water or other fluid, or lets it escape. |
| pour verb | /poɹ/ | To cause (liquid, or liquid-like substance) to flow in a stream, either out of a container or into it. |
| wrap verb | /ɹæp/ | To enclose (an object) completely in any flexible, thin material such as fabric or paper. |
Phrasal verbs you will hear
| Word | Meaning |
|---|---|
| break apart verb | To dismantle something into its base components. |
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Passive voice be + past participle — the focus is on what happens, not who does it | is wrapped |
| Relative clauses who / which + clause — extra information about a person or thing | top, which will |
| Future with “will” will + verb — a decision, promise or prediction | will pull · you'll see |
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 soap, dish, scrape.
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.