Pratique du Shadowing: Responses to Stimuli - Apprendre l'anglais à l'oral avec la vidéo
Création de la leçon...
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An eagle flies high in the sky.
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It uses its keen sense of sight to search for fish in the lake below.
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When it spots a fish, it dives down and catches it in its sharp talons.
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All organisms respond to stimuli.
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A stimulus is a change of signal in an organism's environment that the organism can recognize and react to.
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In the case of the eagle, the stimulus was spotting the fish in the water.
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The reaction to that stimulus is called a response.
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The eagle's response to seeing the fish was to swoop down and catch it.
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Responses help an organism survive and adapt to its environment.
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Plants for instance have unique ways of responding to stimuli.
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Many plants react to light, a process known as phototropism.
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plants turn their heads to follow the sun across the sky, soaking up as much sunlight as possible for photosynthesis.
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Another type of response in plants is towards gravity, a process known as geotropism.
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This response guides roots to grow downwards into the soil, and stems upwards towards the sky.
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An interesting example of plant response to stimulus is the Venus flytrap.
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This carnivorous plant closes its leaves when an insect lands on them, capturing its prey for digestion.
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Animals also exhibit a wide array of response to stimuli.
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For instance, a rabbit, upon sensing a predator, instinctively runs to escape, demonstrating a basic survival mechanism.
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Similarly, when a gazelle senses a change in the wind direction carrying the scent of a predator, it quickly alters its cause to avoid detection.
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Birds too respond to seasonal changes.
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As winter approaches, many species migrate to warmer regions, ensuring their survival during harsh weather conditions.
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Even a simple organism like an earthworm reacts to light by moving away from it, preferring to stay hidden in the dark soil.
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Even the simplest organisms such as single-celled amoeba or paramecia have the ability to respond to stimuli.
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For example, if these microorganisms encounter a harmful substance, they will move away from it.
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But if they detect a food source, they will move towards it.
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These examples demonstrate that the capacity to respond to stimuli is an essential characteristic of all organisms,
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helping them interact with their environment, adapt to changes and ensure their survival.
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Thank you.
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Vocabulaire et conseils d’expression pour cette leçon
Cette leçon d’expression orale de niveau B2 s’appuie sur la vidéo « Responses to Stimuli ». Les mots qui reviennent le plus souvent : response, organism, plant, stimuli, stimulus. Cette vidéo contient 28 phrases et 382 mots à répéter en shadowing. La partie parlée dure 3:35. Le locuteur parle lentement, environ 107 mots par minute, ce qui laisse le temps d’imiter chaque son. Seuls 71 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
Les 15 mots les plus avancés de la vidéo, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| stimulus nom | /ˈstɪm.jə.ləs/ | stimulus |
| organism nom | /ˈɔɹ.ɡəˌnɪz.əm/ | organisme |
| react verbe | /ɹiːˈækt/ | réagir |
| predator nom | /ˈpɹɛd.ə.tɚ/ | prédateur |
| adapt verbe | /əˈdæpt/ | adapter |
| eagle nom | /ˈiːɡəl/ | aigle |
| demonstrate verbe | /ˈdɛm.ənˌstɹeɪt/ | démontrer |
| amoeba nom | /əˈmiːbə/ | amibe |
| carnivorous adjectif | /kɑːˈnɪv.ə.ɹəs/ | carnivore |
| digestion nom | /daɪˈd͡ʒɛst͡ʃən/ | digestion |
| earthworm nom | /ˈɜː(ɹ)θˌwɜː(ɹ)m/ | ver de terre, lombric |
| gazelle nom | /ɡəˈzɛl/ | gazelle |
| instinctively adverbe | /ɪnˈstɪŋktɪvli/ | instinctivement |
| microorganism nom | /ˌmaɪ.kɹoʊˈɔɹ.ɡəˌnɪz.m̩/ | microorganisme |
| paramecium nom | /ˌpɛ.ɹəˈmi.si.əm/ | paramécie |
Prononciation à surveiller
- Les sons « th »: earthworm /ˈɜː(ɹ)θˌwɜː(ɹ)m/, photosynthesis /ˌfoʊ.toʊˈsɪn.θə.sɪs/
- Les sons « sh » et « zh »: detection /dɪˈtɛk.ʃən/, harsh /ˈhɑɹʃ/
- Mots longs — placez bien l’accent: organism /ˈɔɹ.ɡəˌnɪz.əm/, carnivorous /kɑːˈnɪv.ə.ɹəs/, geotropism /d͡ʒiˈɑt.ɹəˌpɪz.əm/, instinctively /ɪnˈstɪŋktɪvli/, microorganism /ˌmaɪ.kɹoʊˈɔɹ.ɡəˌnɪz.m̩/
Les sons difficiles pour les francophones :
- /h/ — il se souffle, il n’est pas muet: harmful /ˈhɑɹmfl̩/, harsh /ˈhɑɹʃ/
- /tʃ/ et /dʒ/ — à ne pas adoucir en « ch » et « j »: digestion /daɪˈd͡ʒɛst͡ʃən/, geotropism /d͡ʒiˈɑt.ɹəˌpɪz.əm/
- /r/ anglais — langue recourbée, sans frotter la gorge: organism /ˈɔɹ.ɡəˌnɪz.əm/, react /ɹiːˈækt/, predator /ˈpɹɛd.ə.tɚ/, demonstrate /ˈdɛm.ənˌstɹeɪt/, carnivorous /kɑːˈnɪv.ə.ɹəs/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme stimulus, organism, react.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.