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##### 代写essay中数字的正确写法

数字应该是留学生写作中最常见的内容了，其书写也是再简单不过。然而在essay写作中，数字也不是随便写的，自由一套标准写法（其实所有的正式论文都会对数字表达有规范要求）。如果对此不了解，还按照日常的方式使用数字，会使文章显的随意、不正式，虽然不会导致扣分，但也绝对得不了高分。下面我们就来看看essay中数字的正确用法，希望留学生们都能谨记，做好每一处细节，从而不断提升写作水平。
数字的语言
在介绍中，数字常常被用来准确描述情况:
Approximately 1,800 children between the ages of 5 and 12 years were randomly selected.
The earth’s atmosphere appears to be gaining 3.3 billion metric tons of carbon annually.
. . . but five winters in the twentieth century were more than 2.4o C colder than average.
Figures和numbers都是用来在一般意义上谈论统计数据的:
报告中的figures/numbers需要被严格的阅读。
但number被广泛使用:
13 is an unlucky number in some cultures.
She forgot her mobile phone number.
Digits是单独的数字:
4,539 – a four-digit number
两个分数(12)和小数(0。975)都可以使用。
最后的“100/100/百万”使用了整数:
Six million people live there.
Thousands of people were forced to move from the area of the dam.
在写有关货币的文章时，要写\$440 m。(440 million dollars)。
比率通常以百分比表示(e.g. the literacy rate rose to 75 per cent)，但也可能是千分之一(e.g. the Austrian birth rate is 8.7)。
把整数写成1到10的数字和10的数字是很正常的。
There were 16 students in the class, but only eight came to the lecture.

Percentages
这些通常用于表达变化的比率:
Since 2008, the number of prisoners has risen by 22 percent.

Simplification
尽管准确地使用数字是至关重要的，但太多的统计数据会使文本难以阅读。如果实际数字不重要的话，可以用various、dozens或scores的单词来代替:
The snowstorm closed 47 schools.
The snowstorm closed dozens of schools.
few        less than expected
a few     approximately 3–6 depending on context
several      approximately 3–4
various      approximately 4–6
dozens of    approximately 30–60
scores of     approximately 60–100

Further numerical phrases
下面列出的表达式也可以用来表示和简化统计信息。例如:
The course fees rose from \$1,200 to \$2,500 in two years.
可以写成：
The course fees doubled in two years.
如果合适，roughly/approximately可以添加:
The course fees roughly doubled in two years.