مجموعه Study English سری اول – قسمت 13
زبان ویدیو: در این ویدیو قسمت سیزدهم از سری اول مجموعه آموزشی Study English برای آمادگی آزمون آیلتس برای شما آماده شده است.
متن کامل این ویدیو را می توانید در زیر مشاهده کنید.
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Hello. Welcome to Study English, IELTS preparation.
I’m Margot Politis.2
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We’re going to look at articles today – indefinite
articles ‘a’ and ‘an’, and the definite article,3
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‘the’.4
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But first, let’s meet an oceanographer. She’s
talking about using underwater devices to5
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predict weather patterns.6
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See if you can hear her using articles while
she talks about monsoons.7
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The monsoon gets a lot of its energy from
the equatorial and sub-tropical Indian Oceans.8
00:00:47,729 –> 00:00:53,260
Dr Susan Wijffels, an oceanographer from Australia’s
CSIRO, is hoping that by measuring the state9
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of the Indian Ocean in those areas, scientists
will be able to learn something about monsoon10
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predictability.11
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Predicting the monsoon is a very difficult
thing and yet it impacts on millions and millions12
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of people, and so we think that, if we can
predict the monsoon usefully, we can make13
00:01:09,140 –> 00:01:10,460
a real difference.14
00:01:10,460 –> 00:01:16,000
We know from El Nino that it’s a fully global
system, so you just can’t study one small15
00:01:16,000 –> 00:01:20,730
part of the ocean and solve these problems.
You really need a global integrated observing16
00:01:20,730 –> 00:01:27,010
system, and the Argo program is the first
real big ocean attempt to do that, and it’s17
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the float technology that’s allowed us to
even think about doing this.18
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Using articles before nouns is one of the
most difficult things in learning English.19
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You can choose between indefinite articles
‘a’ and ‘an’, the definite article ‘the’,20
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or no article at all.21
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Let’s start with the indefinite articles ‘a’
and ‘an’.22
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The rule is that ‘a’ is used before words
starting with a consonant, and ‘an’ is used23
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before words starting with a vowel.24
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So we have a banana, but an apple.25
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There are a couple of exceptions to the rule.
Where the consonant ‘h’ is not pronounced,26
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we use ‘an’.27
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So we say a happy man, but an honest man.
The ‘h’ is not pronounced, so honest sounds28
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like it starts with a vowel.29
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Where the vowel ‘u’ is pronounced like a ‘y’
sound, we use ‘a’.30
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So we say an umbrella, but a user, because
user sounds like it begins with a ‘y’.31
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‘A’ and ‘an’ are only used with singular nouns.
We use ‘some’ with plural nouns.32
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The indefinite articles ‘a’ or ‘an’ are used
to refer to indefinite things, things that33
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aren’t specific. You use them when you’re
referring to any member of a group of things.34
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The indefinite article does not refer to a
particular thing, but one out of many possible35
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things.36
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If I say I would like a banana, I just want
any banana, it doesn’t matter which one.37
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Let’s look at an example of indefinite articles
from the clip.38
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Predicting the monsoon is a very difficult
thing and yet it impacts on millions and millions39
00:03:24,870 –> 00:03:28,320
of people, and so we think that, if we can
predict the monsoon usefully, we can make40
00:03:28,320 –> 00:03:30,540
a real difference.41
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She uses the indefinite article twice.42
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She says ‘predicting the monsoon is a very
difficult thing’. There are many things that43
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are difficult to do, and predicting the monsoon
is just one of them.44
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Secondly she says ‘we can make a real difference’.
There are many differences that can be made45
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in the world, but she is just talking about
one of them.46
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So when do we use the definite article ‘the’?47
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Well, we use it when we’re referring to definite,
specific things. We also use ‘the’ when we’re48
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talking about one particular member of a group.49
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Luckily there is only one form of the word
‘the’, and it can refer to both singular and50
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plural nouns.51
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We say the banana and the bananas.52
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There is a difference in pronunciation though,
when ‘the’ comes before a vowel sound, we53
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say ‘thee’, the apples.54
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So ‘thee’ before vowel sounds, and ‘thuh’
before consonant sounds.55
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Let’s look at the clip again. Listen for ‘the’.56
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You really need a global integrated observing
system, and the Argo program is the first57
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real big ocean attempt to do that, and it’s
the float technology that’s allowed us to58
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even think about doing this.59
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She says ‘the Argo program’. She uses ‘the’
because there is only one Argo program. It’s60
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a unique, particular thing.61
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She also says ‘the float technology’. She
is talking about a particular type of float62
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technology, not just any float technology.63
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There was a third ‘the’. She said ‘the first
real big ocean attempt’.64
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We use ‘the’ in front of first, second and
so on, because they refer to something particular65
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or unique.66
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There can be only one first attempt.67
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In the same way we use ‘the’ in front of superlatives
– the best example, the biggest banana and68
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so on – because there can only be one best,
or biggest, of anything.69
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OK. So that’s the major difference between
definite and indefinite articles, but there70
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are other rules as well.71
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We use ‘a’ and ‘an’ with countable nouns,
that is, if the noun can be counted.72
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I ate an apple. Apples can be counted.73
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We use ‘the’ with uncountable nouns, with
things that you can’t count.74
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I swam in the water. (Water cannot be counted.)75
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I drank the milk. (Milk cannot be counted.)76
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We also use ‘a’ with counting expressions
like a bottle of, a cup of, a bit of.77
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Listen to this:78
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The monsoon gets a lot of its energy from
the equatorial and sub-tropical Indian Ocean.79
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She says, “The monsoon gets a lot of its energy”.80
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Look at the monsoon, and the Indian Ocean.81
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These are both examples of other rules for
‘the’.82
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We can use ‘the’ to describe ‘generic nouns’.83
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A generic noun is a noun that describes a
category or type of thing. It can often be84
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the same as using a plural noun.85
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So sometimes the monsoon means the same as
monsoons. She’s talking about monsoons in86
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general.87
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Predicting the monsoon is a very difficult
thing and yet it impacts on millions and millions88
00:07:26,060 –> 00:07:31,010
of people, and so we think that, if we can
predict the monsoon usefully, we can make89
00:07:31,010 –> 00:07:32,300
a real difference.90
00:07:32,300 –> 00:07:37,880
We know from El Nino that it’s a fully global
system, so you just can’t study one small91
00:07:37,880 –> 00:07:40,550
part of the ocean and solve these problems.
You really need a global integrated observing92
00:07:40,550 –> 00:07:41,550
system, and the Argo program is the first
real big ocean attempt to do that, and it’s93
00:07:41,550 –> 00:07:42,550
the float technology that’s allowed us to
even think about doing this.94
00:07:42,550 –> 00:07:47,699
And here’s another rule. We also use ‘the’
with oceans, seas, rivers and deserts.95
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We say the Indian Ocean, the Yangtze River,
the Gobi Desert.96
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We also use ‘the’ for points on the globe
– the Equator,97
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the Tropic of Capricorn, the North Pole.98
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Choosing the right article can be very confusing,
but if you follow the general rule that you99
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use ‘the’, the definite article, to refer
to a particular thing or things, and ‘a’ and100
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‘an’, indefinite articles, to refer to one
of a number of things, you shouldn’t go too101
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wrong.102
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OK, so now we’ve seen how to use definite
and indefinite articles, but sometimes we103
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don’t use articles at all before nouns.104
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Let’s look at when to use no article.105
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We’ve already seen that you can leave the
article out when talking about plural generic106
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nouns.107
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Monsoons are unpredictable.108
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But this is true for uncountable generic nouns
too.109
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Coffee is delicious.110
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Happiness is hard to find.111
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“Balls are round.”112
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OK, so let’s look at some sentences.113
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I would like a cake. (I would like one cake,
any cake.)114
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I would like the cake. (I would like that
particular cake.)115
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I like cakes. (I like all cakes.)116
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Here, cakes with no article is generic. It
refers to cakes in general, all cakes.117
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Well that’s all for today. Don’t forget to
practice those articles!118
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I’ll see you next time for Study English.
Bye Bye.