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成都雅思培训| 雅思写作,如何正确表达倍数与百分比?
时间:2019-09-25 浏览量:42次


成都雅思培训 | 在雅思写作中,我们经常要表达“A是B的n倍。”也就是说,我们要学会比较数据,本期的学习重点是如何正确运用形容词比较级和百分比对比、描述数据。同时,还为大家总结了经常容易混淆的时间介词。我们以"the rising dollar"这篇报道为例来解析一下这三个知识点。重点:比较数据&百分比&时间介词

 

1、“平级”或“比较级”表达倍数

表达倍数时,既可以用“平级”,也可以用“比较级”。如:A楼的高度是B楼的三倍(A楼比B楼高两倍)。

Building A is three times as tall as Building B. (平级)

Building A is three times taller than Building B. (比较级)

 

 

在倍数比较的句子中,常见的错误之一,是形容词与其所修饰的名词不搭配。例如:

The population of China is five times as big as that of Pakistan. 

The population of China is five times as many as that of Pakistan. ×

在汉语里,可以用“多”和“少”来形容人口,于是很多人会用as many as。而句中的主语是population, 只可以用large/big/small来形容。



2百分数的表达percent or percentage?

Percent : it is used to express proportions out of a hundred. Percent is always used with a number.2 percent = 2%percent = per centum
数词+percent+of+sth:后面谓语的单复数以percent后面跟接的主语(sth)为主例如:

20 percent of the apples are eaten. (这里是复数的可数名词,所以用复数。)

20 percent of the water is drunk.(这里是不可数名词,所以用单数。)

 

Percentage: portion or amount of something
The percentage of +sth+ is:注意这里不管后面跟的是什么词,都用第三人称单数 

The percentage of the students is 46.

The percentage of the water is 46.

That was a high percentage.


3、常见错误:
Percent is only used after a number. If you are referring more generally to part of an amount, use percentage.Percent仅用在数字之后,如果更笼统表示数量中的一部分,可用percentage: 

A high percentage (不说percent) of the population was illiterate. 绝大部分人口是文盲。

时间介词at on in

at用在时间点前:

 

The lecture is at 7.00.

 


on用在星期和日期前:

 

The lecture is on Thursday.

 

 

The lecture is on 27 October.

 


in用在时间段,月份,年和季节前:

 

The lecture is in the morning.

 

 

The lecture is in June.

 

 

The lecture is in 2004.

 

 

The lecture is in winter.

 

 

 

我们把这几个时间介词都放在一句话中:The lecture is at 7.00, in the morning, on Thursday, on 27 October, in 2004.


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