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,今天,小编就教大家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。
一、用“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。
二、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.
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。
三、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.
这是最基础的雅思写作细节介绍,乍看或许都懂,但实际写作过程中犯错的考鸭不在少数。想让雅思写作达到高分,细节更要重视。更多细节学习可以参加福建新航道的雅思写作陪练课程。
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