在雅思写作考试中考生有1个小时的时间完成2篇文章，一篇主要是让大家通过图形来描述图形中暗含的数量变化关系，字数要求为不少于150字。而第二篇文章让大家写的是一篇议论文，根据给出的题目表达出自己的看法和主张。和其它科目比较而言，雅思作文中用到的一些词汇则是比较固定的，留学360就为雅思考生总结下小作文中和数量变化有关常用表达形式和固定词汇。
1、趋势类词汇
上升动词类: increase, go up, rise up, grow up, jump up, surge, shoot up,keep an upward tendency
下降动词类: decrease, go down, decline, fall down, drop, sink, dip, keep a downward tendency
波动动词类: fluctuate
持平动词类: remain the same, stabilize, remain stable, remain, constant
修饰动词的副词:
slightly 轻微地, slowly 缓慢地, gradually逐渐地,
steadily 稳定地, rapidly 迅速地, moderately 温和地, 轻微地,
significantly 明显地, sharply 明显地,dramatically 急剧地, drastically 急剧地
上升名词类: increase, rise, growth, jump, surge
下降名词类: decrease, decline, fall, reduction, drop
波动名词类: fluctuation
修饰名词的形容词: slight, slow, gradual, steady, rapid, moderate,significant, sharp, dramatic, drastic
2、极值类词汇和表达
最高点: reach the peak/top/highest point
increase to the peak/top/highest point(所有上升类的动词都可以替换掉increase)
最低点: reach the bottom/lowest point
drop to the bottom/lowest point(所有下降类的动词都可以替换掉drop)
占的最多：occupy/make up/take up/account for the largest proportion/number/percentage of …
占的最少：occupy/make up/take up/account for the smallest proportion/number/percentage of…
3、倍数的表达方式
Double 是两倍/大一倍
Increase/decrease three times 增长/减少了三倍
4、大约的表达方式
About/around + 数字
数字 + or so
Approximately + 数字
希望这些小作文常用表达形式能够对广大雅思考生备考起到帮助作用。
