计算类概述
相对其他题型而言,计算类是四级听力中的基础题(可分为计算题、细节辨认题、等值转换题),也应该是你的抢分题,故不可“大意失荆州”。地球人都知道四级中听力的计算类不是在考咱们连小学生一年级都会做的加减乘除,测评大家的IQ,醉翁之意不在酒,而是在考大家对英语听力的反应速度,只要意识到这一点,现在你就要学会如何运用技巧来所谓的“抓鱼”了——核心在于抓住关键的细节所在之处,in
a
other
word,你要知道根据题意该听什么,怎么把它去听准。
计算题
M:
When
does
the
next
shuttle
bus
leave?
W:
You
have
just
missed
one
by
20
minutes.
We
have
a
bus
every
45
minutes,
so
you’ll
have
to
wait
for
a
while.
Q:
How
long
does
the
man
need
to
wait
for
the
next
bus?
A)
25
minutes
B)
65
minutes
C)
20
minutes
D)
45
minutes
【解析】
当你看见这四个选项,不难发现这一题是在考与时间有关的内容,并且从选项当中可以推测到是考时间的加减关系,因为其中三个选项都是正确答案的干扰选项,说到这里,你就要做好充分的思想准备。原文中除了听清20和45两个数字之外,重要的是明白其之间的联系,通过missed知道已经错过,而介词“by”专门用在计算题表差额;通过every知道每辆车之间45分钟,问的是wait
for
the
next
bus
还得等多长时间,很清楚这里是减法的计算关系,所以选择A。
细节辨认题
M:
I
wonder
if
Jack
will
come
here
by
11
o’clock.
W:
His
wife
said
he
left
home
at
10:30,
so
he
should
be
here
at
11:20
at
the
latest.
Q:
What
time
did
Jack
leave
home?
A)
11:20
B)
10:30
C)
10:50
D)
11:30
【解析】
原文中出现三个数字,11:00是Man觉得杰克应该到的时间;10:30是杰克的妻子说他离开家的时间;11:20是Woman认为杰克应该到的时间。我们再来看问题,选B是对号入座。
【死马活医】
如果没听清,这里就要充分运用技巧来猜选,时间中的B和C选项,可以合并小时“10”;时间中的B和D选项,可以合并分钟“30”,通过合并同列项方法,就能猜选答案为B。
等值转换题
M:
These
postcards
cost
60
cents
a
dozen.
W:
Two
dozen
should
certainly
do.
Q:
How
many
postcards
will
the
man
buy?
A)
60
B)
12
C)
24
D)
16
【解析】
第一句话是“声东击西”,60美分一打,问题并不是我们所期待的考多少钱,考价格,而是在问数量,第二句话提到数量,但前面加了pair,意味着要乘以2。除了清楚这些还不够,dozen是英语中数字的代用词,表示12。所以选C。
常见的数字计算类提问形式:
1.
What
time…?
5.
How
far…?
2.
How
much/many…?
6.
How
often…?
3.
How
long…?
7.
How
old…?
4.
When…?
先来热热身
(音频暂缺)
1.
A)
6
B)
15
C)
20
D)
21
2.
A)
5:00
B)
5:15
C)
5:30
D)
5:45
3.
A)
$
2
B)
$
20
C)
$
12
D)
$
10
4.
A)
5:00
B)
5:15
C)
5:30
D)
5:45
5.
A)
in
5
minutes
B)
in
10
minutes
C)
in
15
minutes
D)
in
25
minutes
1.
【选D】原文重现
M:
Tom
must
be
over
twenty
now.
W:
I
think
so,
when
I
left
Paris
six
years
ago,
he
was
already
fifteen.
Q:
How
old
is
Tom
now?
2.
【选B】原文重现
1997.1
M:
What’s
the
time
for
departure?
W:
5:30.
That
only
leaves
us
15
minutes
to
go
through
the
customs
and
check
our
baggage.
Q:
At
what
time
did
the
conversation
take
place?
3.
【选C】原文重现
W:
Good
evening
,
sir.
Why
not
try
our
dry
beer.
Two
dollars
for
each
bottle,
and
twenty
for
a
dozen.
M:
Well,
a
dozen
is
too
much
for
me.
Give
me
a
half.
Q:
How
much
does
the
man
need
to
pay?
4.
【选C】原文重现
W:
It’s
five
already,
I
suppose
the
meeting
will
be
postponed
to
5:45.
M:
Well,
the
secretary
said
something
unexpected
happened.
The
meeting
will
begin
in
30
minutes.
Q:
When
will
the
meeting
begin?
5.
【选D】原文重现
W:
Excuse
me,
sir.
Does
the
No.1
bus
stop
here?
M:
Yes,
but
the
bus
only
runs
every
half
hour
and
one
just
went
by
five
minutes
ago.
Q:
When
will
the
No.1
bus
come?
(启悟在线
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