雅思寫作如何正確表達倍數與百分比
在雅思寫作中，我們經常要表達“A是B的n倍。”也就是說，我們要學會比較數據，今天，小編就教大家如何正確運用形容詞比較級和百分比對比、描述數據。同時，還爲大家總結了經常容易混淆的時間介詞。
雅思寫作如何正確表達倍數與百分比
一、用“平級”或“比較級”表達倍數
表達倍數時，既可以用“平級”，也可以用“比較級”。
如：A樓的高度是B樓的三倍(A樓比B樓高兩倍)。
Building A is three times as tall as Building B. (平級)
Building A is three times taller than Building B. (比較級)
在倍數比較的句子中，常見的錯誤之一，是形容詞與其所修飾的名詞不搭配。
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. ×
在漢語裏，可以用“多”和“少”來形容人口，於是很多人會用as many as。而句中的主語是population, 只可以用large/big/small來形容。
二、百分數的表達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
數詞+percent+of+sth：後面謂語的單複數以percent後面跟接的主語(sth)爲主
例如:
20 percent of the apples are eaten. (這裏是複數的可數名詞，所以用複數。)
20 percent of the water is drunk.(這裏是不可數名詞，所以用單數。)
◆Percentage: portion or amount of something
The percentage of +sth+ is：注意這裏不管後面跟的是什麼詞,都用第三人稱單數
The percentage of the students is 46.
The percentage of the water is 46.
That was a high percentage.
常見錯誤：
Percent is only used after a number. If you are referring more generally to part of an amount, use percentage.
Percent僅用在數字之後，如果更籠統表示數量中的一部分，可用percentage:
A high percentage (不說percent) of the population was illiterate.
絕大部分人口是文盲。
三、時間介詞at on in
◆at用在時間點前：
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用在時間段，月份，年和季節前：
The lecture is in the morning.
The lecture is in June.
The lecture is in 2004.
The lecture is in winter.
我們把這幾個時間介詞都放在一句話中：
The lecture is at 7.00, in the morning, on Thursday, on 27 October, in 2004.
雅思寫作觀點語料：transport
Transport交通相關語料
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
相關雅思歷史真題
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?
fic congestion is becoming a huge problem for many major cities. Suggest some measures that could be taken to reduce traffic in big cities.
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?
雅思寫作觀點語料：水資源
Water水資源相關語料
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
相關雅思歷史真題
h 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?
r 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?
r resources around the world are falling deficient. Analyze the possible reasons and provide your suggestions.
