跟读练习: Cambridge 19 listening test 3 section 3 - 通过视频学习英语口语
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1
Hi Jake, how are you getting on with the practical teaching?
2
It's harder than I expected, but I've got some great classes.
3
How about you?
4
Not brilliant.
5
I'm really struggling with my Year 12 science class.
6
Are they hard to control?
7
Well, I don't have discipline problems as such.
8
It's just that they don't seem to think that science has anything to do with their lives.
9
It's depressing.
10
They listen to what I say and I gave them a test last week and the results weren't too bad.
11
But there's no real engagement.
12
Right.
13
And as part of my teaching practice, I have to design an experiment for them to do.
14
I was wondering about something on the children's diets, you know, asking them to record what they eat and maybe linking it to their state of health.
15
Hmm, let's think.
16
So your methodology would involve the children recording what they eat, OK, but you'd also need to have access to the children's medical records,
17
and I don't think people would be happy about that.
18
Confidentiality would be an issue.
19
If you could get the right data, the conclusions might be significant, but I suspect it's not going to be easy.
20
Right.
21
Have you thought about doing an experiment using animals?
22
Wouldn't that be upsetting for the children?
23
Well, the animals don't have to be harmed in any way.
24
It could just be an experiment where they're given a certain diet and the effects are observed.
25
Would I have to get permission to use animals?
26
Yes, you'd have to submit an outline of the experiment and fill in a form, but it's quite straightforward.
27
But if we found out that, say, a particular diet affects the health of animals, the same thing wouldn't necessarily be true for people, would it?
28
No, that's true.
29
But the findings for any experiment are going to be limited.
30
It's inevitable.
31
I suppose so.
32
So what animals could I use to investigate the effects of diet?
33
Mice?
34
Yes, you'd need experimental mice, ones that have been specially bred for experiments.
35
OK, so what will your experiment be investigating exactly?
36
Well, something to do with nutrition.
37
So maybe we could look at food supplements, things like extra iron and extra protein, and their impact on health.
38
That might be rather broad.
39
Maybe just look at the effects of one supplement, like sugar, on the health of the mice?
40
In fact, maybe the focus could be on whether mice can control their own diet.
41
So what happens when they have access to more sugar that they don't really need?
42
Exactly.
43
Do they eat it or do they decide to leave it?
44
Great.
45
Then later on you could do a follow-up experiment adding another variable, like you could give some of the mice the chance to be more active,
46
running on a wheel or something, and the others just sit around and don't do much.
47
Or I could repeat the experiment but change the type of food I provided, or use mice with a different genetic structure.
48
But I think your idea would be more interesting.
49
I might think about that some more.
50
So, can I talk through a possible procedure for the experiment where mice are given a sugar supplement?
51
Sure.
52
I did a similar experiment in college, actually.
53
Great.
54
So, how many mice would I need?
55
I'd say about 12, and all young ones, not a mixture of old and young.
56
Okay.
57
And I'd need two groups of equal sizes, so six in each group.
58
And how would I tell
59
I suppose I could put some sort of tag on one group or just mark them in some way.
60
You could use food colouring.
61
That wouldn't hurt them.
62
Perfect.
63
Then each group would go into a separate cage and one group, let's call them group A, would be the control group.
64
So they'd just have ordinary mouse food.
65
I suppose you can buy that?
66
Yes, it comes in dry pellets.
67
And the other group would have the same as the first group, but they'd also have the extra sugar.
68
Would you just give them straight sugar?
69
It might be better to give them something like cereal with it.
70
Then you'd need to weigh the mice, I should think, once a week.
71
And you'd need an electronic balance.
72
But we can't hold them on the balance, or it'd affect the reading.
73
Exactly.
74
So you need something called a weighing chamber to stop the mice from running away.
75
It sounds complicated, but actually you can just use a plastic box with holes in the top.
76
OK.
77
So once we've measured the weight gain of each mouse, we can work out the average for each group, as well as the standard deviation,
78
and then see where we go from there.
79
That sounds cool.
80
I think the students will enjoy it.
81
Yes.
82
One thing you must remember...
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本课的词汇与口语要点
这段视频共有 82 个句子、816 个单词可供跟读。 讲话部分时长为 5:10。 说话人语速自然，每分钟约 158 个词，接近日常对话。 85% 的单词属于英语最常用的 3,000 词，其余的词建议在练习前先学一下。
视频中的重点词汇
视频中 15 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| mouse 名词 | /maʊs/ | лочў, 鳥鼠 /鸟鼠 |
| experiment 名词 | /ɪkˈspɛɹ.ə.mənt/ | 實驗 /实验 |
| investigate 动词 | /ɪnˈvɛs.tə.ɡeɪt/ | 調查 /调查 |
| weigh 动词 | /weɪ/ | 稱重 /称重 |
| necessarily 副词 | /ˌnɛs.əˈsɛɹ.ə.li/ | 必然地, 必定地 |
| practical 形容词 | /ˈpɹæk.tɪ.kəl/ | 使用的, 實用 /实用 |
| chamber 名词 | /ˈt͡ʃeɪ̯mbɚ/ | 臥室 /卧室, 寢室 /寝室 |
| complicated 形容词 | /ˈkɑm.plɪˌkeɪ.tɪd/ | 複雜 /复杂 |
| harm 名词 | /hɑːm/ | 損害 /损害 |
| procedure 名词 | /pɹəˈsiː.d͡ʒə/ | 做法, 方法 |
| ordinary 形容词 | /ˈɔɹdɪnɛɹi/ | 普通, 平常 |
| conclusion 名词 | /kənˈkluːʒən/ | 結束 /结束 |
| experimental 形容词 | /ɪkspɛɹəˈmɛntəl/ | 實驗的 /实验的 |
| submit 动词 | /səbˈmɪt/ | 讓步 /让步, 屈服 |
| discipline 名词 | /ˈdɪsəplɪn/ | 紀律 /纪律 |
视频中出现的短语动词
| 单词 | 发音 | 释义 |
|---|---|---|
| find out 动词 | 找出, 查明 | |
| follow up 动词 | 跟進 /跟进 | |
| get on with 动词 | 繼續 /继续, 持續 /持续 | |
| run away 动词 | 逃跑 | |
| work out 动词 | /ˌwɝk ˈaʊt/ | 計算 /计算, 算出 |
视频中的语法
说话人最常用的结构，并附上视频中的原话：
| 结构 | 视频中的用法 |
|---|---|
| 被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的 | be harmed · are observed · be limited |
| 现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事 | have been · we've measured |
需要注意的发音
说话人用了 25 次缩略和弱读形式，例如 don't, you'd, wouldn't。请按听到的简短形式来说。
- “sh” 和 “zh” 音: conclusion /kənˈkluːʒən/, nutrition /njuːˈtɹɪʃ.ən/, specially /ˈspɛʃəli/, deviation /ˌdiː.viˈeɪʃən/
- 长单词——注意重音位置: experiment /ɪkˈspɛɹ.ə.mənt/, investigate /ɪnˈvɛs.tə.ɡeɪt/, necessarily /ˌnɛs.əˈsɛɹ.ə.li/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, ordinary /ˈɔɹdɪnɛɹi/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
- 录下自己的声音并与原声对比，特别注意 mouse, experiment, investigate 这类单词。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。