Luyện nói tiếng Anh bằng Shadowing qua video: How To See Germs Spread Experiment (Coronavirus)
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- I've always thought if we could somehow just see the germs around us, everyone will be a lot more careful and we'd get sick way less.
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Unfortunately, that's still not possible.
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So I did the next best thing by running a daylong experiment in this third-grade classroom.
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I found this powder called Glo Germ.
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And just like real germs, when it's on your hands, you can't see it.
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But unlike real germs, if you turn a black light on, it becomes visible.
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But it transfers to things you've touched, so it provides a really good way to visualize exactly how germs spread.
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So before the kids arrived, as a control, I went around and noted any preexisting spots in the room that fluoresced under the black light.
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And then it was go time.
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The kids, of course, had no idea what we were doing and that the teacher had been secretly infected with the glowing powder.
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So she randomly shook the hands of three kids but didn't touch any of the rest.
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And so with that, they just went about their normal day.
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At break, I did choose one random student, and he agreed to letting me put some of the powder on his hands too.
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And then two hours later at lunchtime, I checked the results.
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Remember, everything you see here started with just the teacher and one student having a little of that powder on their hands.
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And because my flashlight can only illuminate one spot at a time, I used Photoshop to better visualize our observations of where germs were left behind, including on the other kids.
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Uh-oh! We're pretty hot over here!
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Oh, right here.
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And they were actually pretty diligent about washing their hands.
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This was the desk of the kid that was infected.
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And what's crazy is that germs could live on a hard surface like this for up to nine days.
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And so you can see how important it is to disinfect the things a sick person regularly touches.
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For example, this was the phone of the teacher in the experiment.
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Even if you wash your hands really often, if you immediately pull out your phone, a lot of those germs just go right back on your hands.
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Think about when the last time was that you cleaned your phone.
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My friend Joanna at "The Wall Street Journal" recently demonstrated you can clean your phone with an antibacterial wipe every day for at least a year and it doesn't affect the oleophobic coating at all.
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And this hopefully gives you a better mental model of why it's really important to wash your hands or use hand sanitizer after being at places like this or this or this or this.
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Cleaning commonly touched surfaces is important because even if a virus is spread through airborne transmission, those tiny droplets don't stay in the air for long.
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Then they land on surfaces, waiting to be touched by our hands.
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Which raises an important point.
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The ultimate defense against catching a virus is just don't touch your face.
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Your eyes, nose, and mouth are like the single weak spot on the Death Star when it comes to viruses.
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That's the only way they can get in to infect you.
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But as you can see here, not touching your face is easier said than done.
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And before you think, "Yeah, well, that's just kids for you," this was what the teacher's face looked like at the end of the day.
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And she said she tried extra hard to remember not to touch her face.
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I found this result fascinating, so I put the powder on my own hands for a few hours.
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And I resisted the urge to touch my face so many times that I fully expected I was going to have a perfectly clean face and the moral high ground.
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And then this is what I saw.
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What the heck?
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I genuinely have no idea when any of this came on.
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Until I reviewed the footage.
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Oh, well, there you go.
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On average, we touch our face 16 times an hour, which is why washing hands is so important.
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It's impossible to catch a virus directly through your hands.
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It's as futile as shooting the outer surface of the Death Star.
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The problem is, we use our hands to help the virus out by constantly giving it a ride to our figurative Death Star exhaust ports.
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Because of this, I ran another experiment with some of the kids after lunch.
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First, I had them put some lotion on their hands that also glows under a black light.
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But then I told them I made a mistake and used the wrong lotion.
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Could you guys just go wash your hands real quick?
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And do a good washing, right?
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- 20 seconds. - Yeah.
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Do the right washing, okay?
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I just tricked you guys again, because what I really wanted to do is test how good you are at washing your hands.
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So guess what I'm gonna do now?
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- What?
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- Show me your hands.
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But before I show you how effective they actually were at washing their hands, here's what you should quickly know about viruses.
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They're super tiny, but also the most abundant biological entity on the planet.
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In fact, there's over 10 million viruses in any single drop of sea water.
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And a lot of types of viruses are beneficial to the planet's ecosystem, and only an insanely tiny percentage affect humans at all.
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And they're really simple.
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Viruses are basically a shell with some DNA inside, and they just wanna spread and duplicate.
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That's their only goal.
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But they're so simple that they need a host to do that.
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So they reproduce by infecting their host cells and then trick them to become factories that just make more exact copies of the virus.
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When you get sick and then cough or sneeze or wipe your nose and then touch a surface, you're putting copies of this virus out to find other hosts and just repeat the process.
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And so here's what the kids' hands look like after washing their hands.
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Uh-oh, look at the backs. Let me see your fingernails!
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Oh, look at all those germs!
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Oh, your thumb!
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- Oh, my hand- - Oh, look at your wrist!
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Look at your wrist!
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We all sort of have a habitual way of washing our hands.
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So once again, I tried this myself using the typical quick way I do it in my muscle memory.
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Granted, that's better than nothing, but you could see the difference compared to when I was deliberate and took 20 seconds, which is why it helps to do things like sing the "Happy Birthday" song twice, or you could do what I do and follow Brandon Flowers' example.
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Jealousy, turning saints in Eager eyes 'Cause I'm Mr. Brightside - And then for a final experiment, I wanted to show how dumb handshaking is.
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So I infected the first kid with the powder and then had them do a handshake chain down the line.
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The fifth person here still had significant traces on their hand, so I put him at the first and lined four more kids up after him, and three of their hands glowed.
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So we got trace germs from the original person all the way down eight handshakes later.
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So if you ever meet me in real life, please don't be offended if in lieu of a handshake I offer you a fist bump and a selfie. In conclusion, what does this all mean with regards to the coronavirus COVID-19?
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You should be concerned and take this seriously, but regardless of what you see in the coming weeks, there's absolutely no need to panic.
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As I'm sure you've heard a bunch by now, our goal is to flatten the curve so that reported cases stay just under the capacity of the healthcare system, and social distancing is the best knob that we can turn to affect that.
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The reason this helps should hopefully make more sense after watching this video, especially for those who have been doubting the science and feeling like this is an extreme reaction.
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And my take here is I'm a practical optimist.
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The upside is while this virus is bad, it could be way worse.
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And this gives us a chance as a global community to get some systems and methods in place to handle something potentially even more drastic in the future.
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Also, maybe it'll lead to changing some social norms, like replacing handshakes with fist bumps or when people are really sick thinking it's okay to mingle about and go to work.
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Globally, the normal flu kills anywhere from a quarter to a half a million people a year due in large part to people not practicing good germ hygiene.
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So if this experience makes people more socially aware of the right precautions to take when they get sick, that will save countless lives for years to come long after this coronavirus is old news.
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And make no mistake, this is gonna be rough for some more than others, but history has shown that us humans are pretty resilient.
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These types of things can bring out the worst in us, but they can also bring out the best, most wholesome parts of us, like these Italians practicing their social distancing with an impromptu balcony concert.
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How we feel about the situation is largely dependent on just which part we choose to focus on.
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For me, that means being grateful to the heroes in our healthcare system, or the school lunch ladies still providing free lunch for kids who depend on them, or the scientists all over the world who are working tirelessly seven days a week to create better testing methods in a vaccine.
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This is gonna be a bumpy ride for us, but the economy will eventually bounce back, as it always does, and we'll be better off as a global community for having gone through this.
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Again, take this seriously, but there's absolutely no need to panic.
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We totally got this.
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Tại sao nên luyện nói với video này?
Video thí nghiệm về sự lây lan của vi khuẩn mang đến nhiều thông tin bổ ích không chỉ về sức khỏe mà còn là cơ hội tuyệt vời để luyện nói tiếng anh. Khi theo dõi video, bạn không chỉ tiếp cận với từ vựng mới mà còn hiểu rõ hơn về cách mà ngôn ngữ được sử dụng trong các tình huống thực tế. Bằng việc nghe và lặp lại các câu nói trong video, bạn có thể áp dụng phương pháp shadowing tiếng anh, một kỹ thuật hiệu quả giúp gia tăng khả năng nói và nghe thông qua việc bắt chước người nói.
Ngữ pháp & Biểu thức trong ngữ cảnh
Bên dưới đây là một số cấu trúc ngữ pháp và biểu thức quan trọng được sử dụng trong video:
- “I found this powder called Glo Germ”: Câu này sử dụng cấu trúc “I found” để diễn tả hành động đã xảy ra trong quá khứ. Đây là một cách hiệu quả để nói về những phát hiện của bạn.
- “it's important to disinfect the things a sick person regularly touches”: Cấu trúc “it's important to...” nhấn mạnh sự cần thiết của việc làm gì đó, giúp người học hiểu cách nâng cao tầm quan trọng trong diễn đạt.
- “the ultimate defense against catching a virus”: Cụm từ này sử dụng đại từ “the ultimate” để chỉ ra điều gì đó là tốt nhất, rất có ích cho việc nói về các phương pháp bảo vệ.
Khi luyện nói dựa trên video này, bạn sẽ có cơ hội thực hành những cấu trúc này và làm cho cách diễn đạt của bạn trở nên tự nhiên hơn.
Các cạm bẫy phát âm thường gặp
Trong video, có một số từ và cách phát âm có thể gây khó khăn cho người học, bao gồm:
- “disinfect”: Từ này thường bị phát âm sai do âm “dis” và “infect” dễ gây nhầm lẫn. Bạn nên chú ý đến trọng âm và phát âm rõ ràng.
- “germs”:Âm cuối “-s” có thể bị bỏ qua hoặc phát âm không đúng. Hãy thực hành phát âm để làm cho lời nói của bạn trở nên phát âm tiếng anh chuẩn.
- “transfers”: Chú ý đến âm “-s” cuối cùng khi kết hợp với “transfer”, nhiều người học thường nhấn âm không đúng cách.
Chat với bạn bè hoặc sử dụng phần mềm shadowing để thực hành và cải thiện phát âm của mình. Việc này không chỉ giúp bạn trở nên tự tin hơn mà còn nâng cao kỹ năng giao tiếp của bạn trong tiếng Anh.
Ngữ pháp trong video
Những cấu trúc người nói dùng nhiều nhất, kèm đúng cụm từ trong video:
| Cấu trúc | Trong video |
|---|---|
| Câu bị động be + quá khứ phân từ — nhấn vào việc xảy ra, không phải người làm | were left · was infected · is spread |
| Thì hiện tại hoàn thành have/has + quá khứ phân từ — việc đã xảy ra nhưng còn liên quan đến hiện tại | I've always thought · you've touched · you've heard |
| Mệnh đề quan hệ who / which + mệnh đề — thêm thông tin về người hoặc vật | hour, which is · seconds, which is · those who have |
Phương Pháp Shadowing Là Gì?
Shadowing là kỹ thuật học ngôn ngữ có cơ sở khoa học, ban đầu được phát triển cho chương trình đào tạo phiên dịch viên chuyên nghiệp và được phổ biến rộng rãi bởi nhà đa ngôn ngữ học Dr. Alexander Arguelles. Nguyên lý cốt lõi đơn giản nhưng cực kỳ hiệu quả: bạn nghe tiếng Anh của người bản xứ và lặp lại to ngay lập tức — như một "cái bóng" (shadow) đuổi theo người nói với độ trễ chỉ 1–2 giây. Khác với luyện ngữ pháp hay học từ vựng bị động, Shadowing buộc não bộ và cơ miệng phải đồng thời xử lý và tái tạo ngôn ngữ thực tế. Các nghiên cứu khoa học xác nhận phương pháp này cải thiện đáng kể phát âm, ngữ điệu, nhịp điệu, nối âm, kỹ năng nghe và độ lưu loát khi nói — đặc biệt hiệu quả cho người luyện IELTS Speaking và muốn giao tiếp tiếng Anh tự nhiên như người bản ngữ.