Shadowing Practice: Mosquito Life Cycle and Disease Prevention - Learn English Speaking with Video
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44 sentences
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They're small.
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They're mostly silent.
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But they're the deadliest animal on Earth.
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Not because of a bite that causes an irritating itch, But because of what that bite can carry,
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mosquitoes spread diseases like malaria,
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dengue, Zika, and West Nile virus to hundreds of millions of people every year.
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That's why understanding how a mosquito grows, feeds, and behaves isn't just biology.
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It's the foundation of how scientists track outbreaks, design solutions to stop the spread of mosquito-related diseases,
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and identify weaknesses in their life cycle to control their populations.
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Stage 1.
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Egg.
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It all starts with water.
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A female mosquito lays her eggs on the surface of stagnant water, a pond or puddle, a clogged gutter, an old tire, a container,
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or even a flower pot left out after rain.
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Many species lay eggs in rafts of 100 or more.
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Others lay them one at a time, just above the waterline, built to survive drying out and hatch later when it rains.
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Within a day or two, given the right conditions, the eggs hatch.
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Stage 2.
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Larvae.
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Hatching from each egg is a mosquito larva, sometimes called a wriggler.
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It lives entirely in water, breathing through a tube at the surface while it feeds on algae and organic debris below.
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The larvae molt several times over about a week, growing bigger each time.
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This stage is a major target for control efforts, since larvae can't leave the water,
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which is why removing standing water is one of the simplest ways to cut mosquito populations.
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stage 3 pupa next comes the pupa
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or tumbler a comma-shaped stage that's mostly inactive
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and doesn't feed at all though it can tumble toward the bottom in quick bursts
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if disturbed like the larva before it the pupa still depends entirely on water to survive inside it's undergoing metamorphosis,
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a complete transformation of its body structure from an aquatic, worm-like larva into a flying adult insect,
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much like a caterpillar transforming inside a chrysalis.
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This only takes one to four days.
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Then the skin splits and an adult mosquito climbs out onto the water's surface and takes flight.
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Stage 4.
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Adult and feeding behavior.
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Adult males live only about a week, feeding solely on nectar and plant juices, making them harmless to humans.
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Females can live weeks to months, and they need a blood meal to develop their eggs.
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That's the critical link to disease.
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When a female bites an infected person or animal, she can pick up a virus or parasite and pass it to the next person she bites.
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This is exactly why scientists study feeding times and preferred hosts for each species.
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Some bite at dawn and dusk, others bite at night, and knowing the pattern shapes real prevention strategies.
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Thank you.
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Thank you.
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Thank you.
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Thank you.
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Vocabulary and speaking notes for this lesson
This video has 44 sentences and 465 words to shadow. The speech runs for 6:10. The speaker talks slowly, about 75 words per minute, so there is time to copy every sound. Only 71% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
15 less common words from the video, with pronunciation and meaning:
- mosquito /məsˈki.toʊ/ (noun) — A small flying insect of the family Culicidae, the females of which bite humans and animals and suck blood, leaving an itching bump on the skin, and sometimes…
- bite /baɪt/ (verb) — To cut into something by clamping the teeth.
- egg /ɛɡ/ (noun) — An approximately spherical or ellipsoidal body produced by birds, insects, reptiles, and other animals, often housing an embryo within a membrane or shell…
- hatch /hæt͡ʃ/ (verb) — To emerge from an egg.
- virus /ˈvaɪ.ɹəs/ (noun) — A submicroscopic, non-cellular structure that consists of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and…
- scientist /ˈsaɪəntəst/ (noun) — One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research…
- meal /ˈmiːl/ (noun) — Food that is prepared and eaten, usually at a specific time, and usually in a comparatively large quantity.
- silent /ˈsaɪ̯lənt/ (adjective) — Free from sound or noise; absolutely still; perfectly quiet.
- flower /ˈfloʊɚ/ (noun) — A colorful, conspicuous structure associated with angiosperms, frequently scented and attracting various insects, and which may or may not be used for sexual…
- organic /ɔːˈɡænɪk/ (adjective) — Pertaining to or derived from living organisms.
- juice /d͡ʒuːs/ (noun) — A liquid made from plant, especially fruit.
- tube /tuːb/ (noun) — Anything that is hollow and cylindrical in shape.
- prevention /pɹɪˈvɛnʃən/ (noun) — The act of preventing or hindering; obstruction of action, access, or approach; thwarting.
- dawn /dɔːn/ (noun) — The morning twilight period immediately before sunrise.
- breathe /bɹiːð/ (verb) — To draw air into (inhale), and expel air from (exhale), the lungs in order to extract oxygen and excrete waste gases.
Phrasal verbs you will hear
- dry out (verb) — To cause moisture to be completely removed from; to make dry.
- leave out (verb) — To omit, to not include, to neglect to mention.
- pick up (verb) — To lift; to grasp and raise.
Pronunciation to watch
The speaker uses 6 contractions and reduced forms, such as they're, can't, doesn't. Say them the short way, as you hear them.
- The “sh” and “zh” sounds: prevention /pɹɪˈvɛnʃən/, transformation /ˌtɹæns.fɔɹˈmeɪ.ʃən/
- Long words — get the stress right: biology /baɪˈɑ.lə.d͡ʒi/, transformation /ˌtɹæns.fɔɹˈmeɪ.ʃən/, malaria /məˈlɛəɹi.ə/, caterpillar /ˈkætɚˌpɪlɚ/, metamorphosis /ˌmɛtəˈmɔːfəsɪs/
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 mosquito, bite, egg.
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.