शैडोइंग अभ्यास: Introduction to Chemistry - वीडियो के साथ अंग्रेजी बोलना सीखें
पाठ बनाया जा रहा है...
1
Hey guys, I'm Professor Dave, and I want to tell you about chemistry.
2
What is chemistry?
3
Why should we know about it?
4
Chemistry is the study of what matter is made of and how it changes.
5
It's important to know because it describes everything around us, every material, almost every process.
6
If we truly want to understand how our bodies work, how diseases operate and how to cure them, which foods are nutritious and which are not, we must learn chemistry.
7
Unless you fundamentally understand molecules, all you can do is repeat things you've heard.
8
But how do you know if what you've heard is right?
9
If you know chemistry, you can compare what someone says to how you know that molecules behave.
10
If there is a glaring contradiction, you can easily reject false information, and you won't be taken advantage of for someone else's personal gain.
11
We should be able to think critically like this in every avenue of life, be it health, politics, or otherwise.
12
With this general chemistry series, I have two goals.
13
One is to help high school and undergraduate students taking their first chemistry course.
14
Please use these tutorials to supplement your lectures in any way that is helpful to you.
15
But because this is introductory material, and given that chemistry is the central science,
16
this general chemistry series is also meant for anyone who wants to learn science with no prior knowledge and for any reason.
17
I will break down concepts as simply as possible so that anyone can learn them.
18
There will be moments where we go over practice problems that are more geared towards students in a class.
19
But feel free to learn these too, because the predictive power of mathematics is what proves the legitimacy of our science.
20
If you are watching this clip and intend to view the entire series, please click on the general chemistry playlist on the Professor Dave homepage to view in the suggested order.
21
When we check our comprehension after a lesson, feel free to pause the clip so you have plenty of time to think before I tell you the answer.
22
If you need to watch a clip more than once to fully understand it, that's okay.
23
And if you have any questions about what you've learned, feel free to email me at ProfessorDaveExplains at gmail .com.
24
Enjoy your newfound knowledge.
📺 उसी चैनल से
C12
Convergence and Divergence: The Return of Sequences and Series
American AccentCambridge Exam PrepUniversity StudentsWorking Adults
C23
The Integumentary System
American AccentUniversity StudentsWorking Adults
C28
CRISPR-Cas9 Genome Editing Technology
American AccentIELTS PrepTOEFL PrepUniversity Students
C1What is a Crime? (The Six Types of Crimes)
American AccentIELTS PrepTOEFL PrepUniversity Students
B2Addition and Subtraction of Small Numbers
American AccentDaily ConversationHigh School StudentsUniversity Students
✨ अनुशंसित वीडियो
B21
425 वाक्य
NEW- Micro Unit 1 Summary- Basic Economic Concepts
Daily ConversationHigh School StudentsUniversity Students
B24
122 वाक्य
How Chemistry Shapes Great Films (And Makes Them Unforgettable)
American AccentDaily ConversationUniversity StudentsWorking Adults
B12
74 वाक्य
Elements | Middle school chemistry | Khan Academy
American AccentHigh School StudentsUniversity Students
C11
339 वाक्य
Introduction to HPLC - Lecture 1: HPLC Basics
Daily ConversationUniversity Students
B18
118 वाक्य
The Right Grammar for English Introductions | Meeting Someone New
American AccentBusiness EnglishInterview EnglishDaily Conversation
B21
535 वाक्य
Stroll Through the Playlist (a Biology Review)
Daily ConversationHigh School Students
B21
378 वाक्य
Teaching Myself Electronics (Part One)
Daily ConversationUniversity Students
B22
14 वाक्य
CS50x 2026 - Introduction
Daily ConversationUniversity Students
C13
159 वाक्य
Intro to History of Science: Crash Course History of Science #1
Daily ConversationHigh School StudentsUniversity Students
C115
28 वाक्य
Introduction to high school physics | Khan Academy
American AccentHigh School StudentsUniversity Students
B22
99 वाक्य
Exploring the pH Scale
Daily ConversationHigh School Students
Vocabulary and speaking notes for this lesson
This C1 speaking lesson is built on the video “Introduction to Chemistry”. The speaker keeps coming back to these words: chemistry, learn, clip, science. This video has 24 sentences and 396 words to shadow. The speech runs for 2:01. The speaker talks fast, about 196 words per minute, so expect linked and reduced sounds. 85% of the words are among the 3,000 most common in English; the rest is worth studying before you start.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| molecule noun | /ˈmɑ.lɪ.kjul/ | The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by… |
| contradiction noun | /ˌkɑːntɹəˈdɪkʃən/ | The act of contradicting. |
| newfound adjective | /ˈnjuː.faʊnd/ | Recently found; newly discovered. |
| nutritious adjective | /nuːˈtɹɪʃəs/ | Providing nutrients; healthy to eat or drink. |
| predictive adjective | /pɹɪˈdɪk.tɪv/ | Useful in predicting. |
| introductory adjective | /ˌɪntɹəˈdʌktəɹi/ | Introducing; giving a preview, idea or foretaste of. |
| comprehension noun | /ˌkɑmpɹɪˈhɛnʃn̩/ | A thorough understanding. |
| playlist noun | /ˈpleɪˌlɪst/ | A list of recorded songs scheduled to be played on a radio station. |
| legitimacy noun | /ləˈd͡ʒɪtɪməsi/ | The quality or state of being legitimate or valid; validity. |
| fundamentally adverb | In a fundamental or basic sense; reaching the very core of the matter. | |
| tutorial noun | /ˌtjuːˈtɔːɹɪəl/ | A self-paced learning exercise; a lesson prepared so that a student can learn at their own speed or convenience. |
| undergraduate noun | A student at a university who has not yet received a degree. | |
| critically adverb | /ˈkɹɪt.ɪ.kə.li/ | In a critical manner; with, or in terms of, criticism. |
| pause noun | /pɔːz/ | A temporary stop or rest; an intermission of action; interruption; suspension; cessation. |
| behave verb | /bɪˈheɪv/ | To conduct (oneself) well, or in a given way; to conform. |
Phrasal verbs you will hear
| Word | Meaning |
|---|---|
| break down verb | To stop functioning. |
| go over verb | To look at carefully; to scrutinize; to analyze. |
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है | you've heard · you've learned |
| Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है | is made · won't be taken · is also meant |
Pronunciation to watch
The speaker uses 5 contractions and reduced forms, such as you've, I'm, won't. Say them the short way, as you hear them.
- The “sh” and “zh” sounds: contradiction /ˌkɑːntɹəˈdɪkʃən/, nutritious /nuːˈtɹɪʃəs/, comprehension /ˌkɑmpɹɪˈhɛnʃn̩/
- Long words — get the stress right: contradiction /ˌkɑːntɹəˈdɪkʃən/, introductory /ˌɪntɹəˈdʌktəɹi/, legitimacy /ləˈd͡ʒɪtɪməsi/, critically /ˈkɹɪt.ɪ.kə.li/
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 molecule, contradiction, newfound.
शैडोइंग तकनीक क्या है?
शैडोइंग (Shadowing) एक विज्ञान-समर्थित भाषा सीखने की तकनीक है जो मूल रूप से पेशेवर दुभाषिया प्रशिक्षण के लिए विकसित की गई थी। विधि सरल लेकिन शक्तिशाली है: आप मूल अंग्रेज़ी ऑडियो सुनते हैं और तुरंत इसे ज़ोर से दोहराते हैं — जैसे वक्ता की छाया 1-2 सेकंड की देरी से। शोध से पता चलता है कि यह उच्चारण सटीकता, स्वर, लय, जुड़ी हुई ध्वनियाँ, सुनने की समझ और बोलने की प्रवाहशीलता में काफ़ी सुधार करता है।