雅思写作如何正确表达倍数与百分比

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。

雅思写作如何正确表达倍数与百分比

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.

雅思写作观点语料：transport

Transport交通相关语料

Traffic problems

Traffic congestion is caused by commuters travelling to work

Most people live in the suburbs outside city centre

Commuters tend to travel at the same time of day

They tend to travel alone

Cars and road space are not used efficiently

This causes traffic jams during the rush hour

Traffic solutions

In order to reduce traffic we should change our working habits

The internet can now be used to connect people

More people could work from home

Meetings can be held as video conferences

Workers could be given flexible timetables

Another solution would be to tax drivers

Workers should share their cars and travel together

In London, for example, there is a congestion charge

This helps to raise money for better public transport

Public transport needs to be reliable and efficient

Positives of Public transport

We need to reduce our dependence on cars

Parking a car can be extremely difficult in big cities

Well-designed transport systems are comfortable and convenient

Modern public transport can be fast and cheap

Public transport can help to reduce pollution in cities

Investment in buses and trains will ease traffic congestion

Buses can be given special lands to avoid traffic

Negatives of public transport

Public transport if often slow and unreliable

Metro systems and trains are often dirty and crowded

People feel like “sardines in a can”

Cars are much more comfortable

Road safety

Driving while tired or drunk is extremely dangerous

Mobile phones can be a dangerous distraction for drivers

They draw the driver’s attention away from the road

The use of phones while driving has been banned in many countries

Punishments are becoming stricter

Television campaigns are used to remind people to drive safely

Speed cameras have become more common

Speed bumps are another form of traffic calming

Many streets are designed with the aim of slowing traffic down

相关雅思历史真题

1.In cities and towns all over the world, the high volume of traffic is a problem. What are the causes of this and what actions can be taken to solve this problem?

2.Traffic congestion is becoming a huge problem for many major cities. Suggest some measures that could be taken to reduce traffic in big cities.

3.In order to solve traffic problems, governments should tax private car owners heavily and use the money to improve public transportation. What are the advantages and disadvantages of such a solution?

雅思写作观点语料：水资源

Water水资源相关语料

Importance of clean water

Water is as necessary natural resource

Humans need access to clean, safe drinking water in order to live

Poor water quality is a major cause of disease and death in some countries

Water usually needs to be treated before we can drink it

Developing countries often lack the means to treat and supply water to citizens

Developed countries tend to have much better sanitation

Citizens have access to clean tap water

Drinking water is not contaminated by sewage or waste water

The supply of clean water would improve public health in many developing countries

Water supply

Urban life would be impossible without water supply systems

These systems are massive engineering projects

Many professionals are involved in their planning, construction and maintenance

The supply and distribution of water are major concerns

Water is becoming scarce in some countries

Areas that suffer droughts often need to import water

As populations grow, there is more pressure on water supplies

This could lead to a water crisis

Water and politics

The supply of water is also an important political issue

Huge amount of water are needed for agriculture and industry

The irrigation of crops accounts for a large proportions of water use A water crisis could lead to political conflicts or even wars

Argument: water should be free

Some people believe that water should be free for everyone

Governments should supply water to all homes at no cost

Private companies should not be allowed to profit from this natural resource

Money from taxes can be used to pay for water supply systems

Argument: water should not be free

If water is free, people take it for granted

They do not think about how much water they waste

They leave taps running while washing or brushing their teeth

If we have to pay for water, we will use it more responsibly

Water supply systems are extremely expensive

Investment is needed to maintain and improve them

Private companies may provide a better service than governments

If they provide an efficient service, they will make more money

They will repair leaks to avoid losing money

Bottled Water: Opinions

Some people carry bottles of water wherever they go

For example, they take bottles of water to work or to the gym

They believe that bottled water is healthier than tap water

They also argue that it tastes better

However, other people believe that we should consume less bottled water

Plastic water bottles add to litter and waste problems

Companies should not be able to make a profit from water

It is unethical to make money by selling packaged water

There is no difference in quality between bottled and tap water

相关雅思历史真题

1.Fresh water has always been a limited resource in some parts of the world. Today, however, growing worldwide demand has made this a global problem.

What are the causes of the increased demand and what measure could governments and individuals take to respond to this problem?

2.Water is a natural resource that should always be free. Governments should ban the sale of bottled water.

To what extent do you agree or disagree?

3.Water resources around the world are falling deficient. Analyze the possible reasons and provide your suggestions.

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