Shadowing Practice: Introduction - Learn English Speaking with Video

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Hello, I'm Aurelie Favier, project manager of this course
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and I would like to welcome you to Cement Chemistry and Sustainable Cement Tissues Materials.
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This course will introduce you the basics of cement duration and how to develop and characterize low-carbon cement.
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It is divided in two main parts.
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The first part will introduce the sustainability and the chemistry of cement tissue materials during four weeks.
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The last two weeks will focus on the use of X-ray diffraction for the analysis of low carbon cements.
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During the first week, Professor Scrivener introduced you to the challenges facing research and development of cement.
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It will detail the viable solution to meet the ecological challenges and growing demand for building materials.
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In week two, we will begin the courses on hydration of cement.
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You will learn how evolves the microstructure and the consequence on the properties at short, medium and long term.
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To complete the course on hydration, Week 3 will be devoted for tutorial of the use of
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scanning electron microscopy on polished surface to characterize the cement during hydration.
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The first video will explain how to stop hydration, prepare and polish sample for microscopy.
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Then the second tutorial will show how to use a SCM to identify the phases and quantify them.
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The last week of the first part will detail the different kinetics of cement hydration
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and will be illustrated with a tutorial on isothermal calorimetry to monitor the progress of a reaction.
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Finally, the two last week will focus on the use of X3 diffraction to characterize enhydrocements, hydrated phases and supplementary cement issues materials.
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You will find different demonstration videos to illustrate the data acquisition, phases identifications and quantification that we've implemented.
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Throughout this course, we will find quizzes, exercises, documents and complementary links.
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as well as videos on the development of Lampstone Calcene clay cements called LC3.
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The whole team thank you for your participation and wish you a good time with us.

About This Lesson

This lesson uses a video introduction to a cement chemistry course to help you practice English listening and speaking skills. You’ll engage with academic language, follow a structured explanation, and learn to parse detailed information—skills that are also valuable for IELTS speaking practice. By shadowing the dialogue, you’ll improve your ability to follow formal speech patterns and articulate complex ideas clearly.

Key Vocabulary & Phrases

  • Sustainable cement tissues materials: Eco-friendly building materials made from cement.
  • Hydration: The chemical process of cement reacting with water.
  • Scanning electron microscopy (SEM): A tool used to examine material structures.
  • Isothermal calorimetry: A technique to measure reaction rates.
  • Supplementary cementitious materials: Additives that enhance cement properties.
  • Phases identification: The process of identifying components in a material.

Practice Tips

To get the most from learning English with videos like this, start by listening to the entire video once to grasp the main ideas. The speaker’s tone is calm and deliberate, making it ideal for shadowing. Pause the video after each sentence, then repeat it aloud, focusing on matching the speed and intonation. This shadow speech technique helps improve English pronunciation by training your mouth to form new sounds and rhythms.

For tricky phrases, use a shadowing app to slow down the audio without changing the pitch. This allows you to break down complex terms like “low-carbon cement” or “polished surface” and practice them until they feel natural. Pay attention to how the speaker emphasizes key points, such as “viable solution” or “growing demand”—this will help you convey importance in your own speech, a crucial skill for IELTS speaking practice. Finally, repeat the exercise daily to build muscle memory and confidence in using academic English.

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.

Shadowing technique: read the full step-by-step guide →