一起烤雅思 1-2a VITAMIN D

steelver (白龍) 路人甲
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发表于:2012-04-21 11:14 [只看楼主] [划词开启]
做一期节目很不容易有木有……
楼主手头上查不多有90多期的资料…压力山大有木有……
好啦,直接入正题吧,今天的话题有关健康~

VITAMIN D
点击查看大图
Today, we’re going to look at ways of discussing a topic. When you’re writing or speaking, you can present facts, or you can use your opinion - but how can you tell the difference? Today we’ll find out.

We’re going to listen to a scientist talking about Vitamin D and cancer.

In the clip, see if you can hear both facts and opinions being used.

I believe that the public health problem for vitamin D deficiency is quite significant. I would estimate minimum 25% of adults in the United States, Europe and probably even in Australia are vitamin D deficient.

I mean if you think about it, over 250,000 women in the United States will develop breast cancer this year. Something like 50,000 will die. If 25% of those breast cancers could have been averted, prevented in some way, just by having a little exposure to sunlight, would have been really tremendous.

(这位科学家是米国银,这段话你听懂了么……)

So he was talking about the links between vitamin D and cancer.

Many Australians these days are avoiding the sun, because they know it can cause skin cancer. But by avoiding the sun, they’re missing out on vitamin D – the vitamin that you get from sunshine, and this is leading to other health problems.(天天宅在家里的童鞋要常出门活动活动,进行光合作用喔!)
点击查看大图

When you’re reading, writing or listening to an argument like this, it’s important to be able to tell the difference between statements of fact, and statements of opinion.

But how can you tell the difference?

Well, there are a number of ways you can express your opinion.

Today we’re going to look at two of these: using phrases that express an opinion; and using modal verbs.

First, let’s look at some phrases.

The key words to listen for when you’re trying to decide whether someone is talking about facts or opinions are words like believe, think, argue, feel, opinion, or view.

These vary from formal to informal.

If I was talking with my friends I might say “I think” or “I believe”

If I was in a class or tutorial, I might say “In my opinion”, or “in my view”.

But if I was writing an essay, or giving a very formal talk, I’d probably choose “it is believed”, or “it is thought”.

In formal writing, many people think you should avoid using the word ‘I’, even if you are giving an opinion.

Here’s the clip again. Listen for some of those phrases.

I believe that the public health problem for vitamin D deficiency is quite significant.
I mean if you think about it, over 250,000 women in the United States will develop breast cancer this year. Something like 50,000 will die.


Another way we can express opinions is by using modal verbs.

Model verbs express opinions and attitudes. They make statements less certain or less definite.

They can also be used for recommending and advising.

Here are the modal verbs used for opinions:
would
should
could
might


These words signal that the speaker is giving an opinion.

Look at these examples. Can you tell which ones are facts, and which ones are opinions?

Fifty thousand will die.
Fifty thousand might die.

The second statement uses might - it is an opinion.

Here’s another one…

I do not think small amounts of sunlight increase the risk of cancer.

Small amounts of sunlight do not increase the risk of cancer.


In the first statement, you can see ‘I do not think …’. This is an opinion.
Now look at these 2 sentences:

'I believe that vitamin D deficiency might become common among adults'.
'Vitamin D deficiency will affect 25% of adults'.

The first is an opinion - 'I believe', 'might become'.

The second is a fact - 'will affect' 25% of adults.

点击查看大图(米国科学家真容~)点击查看大图

今天的知识点是~Modal Verbs
看清楚啦,是Modal,不是Model, 情态动词不走秀的~他们是:
can / could, may / might, shall/should, will / would.
情态动词的非常实用,不管是在IELTS Writing Task 2, 还是在Speaking test里都经常要用到。
当你要making suggestions,或者giving advise的时候,用should.
当要描述还未发生的possibilityprobability的时候,用may or might.
当你giving opinions时,要记得常用Modal verbs.会显得很礼貌~
好吧,直接上表格更明了~

点击查看大图

此外,Will / shall and would / should are also used to form future tenses(将来时).
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When making Future Predictionsor Speculatingabout the future we have several
language choices.当要表达预测和推断的时候,可以用这些方法表达:
1. Verbs I guess // imagine // suppose // think // hope // suspect// expect
2. Modal Verbs We may // People might // There could be// It will be // It Would
3. Conditionals If… I will // might // could…

Some Modal Verbs are used to express politeness, to be more courteous.活用情态动词以示礼貌:
Will / Would; Can / Could
Can / will you help me please. This is a simple request.介个是粗银版…
Could / would you help me please. This is more polite.介个是文化银版…
(原来楼主一直是以粗银的生命特征存活于世的……)点击查看大图

对了,要注意must的过去式是had to.
Last night I could not go out because I had to finish my final assignment.
My supervisor said I had to finish the report by today.

来测测你的Modal Verbs吧~



点击查看大图前排的同学已经坐不住了么…关闭页面之前记得戳推荐、点收藏喔~
近期节目传送门~ Episode1 α β Episode2 α β Episode3 α β Episode4 α

答题区

1、In most countries of the world students ____ pay university fees. There is simply no choice.
2、There are not many jobs a student ____ do part-time. Most students find jobs as waiters, serving in restaurants, or working in kitchens and so on.
3、I really believe that all students ____ get a casual job, chiefly because it is good experience. This was the advice my father gave me and it helped me enormously.
4、When I was going to university, I ____ find a part-time job to earn some pocket money, because my family was not rich.
5、However, in Britain and some other countries, including even China, students ____ borrow money from banks to cover compulsory fees. Banks are now making it possible for students to borrow money to cover fees.
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