从官方公布的评分标准中，我们看到无论是口语还是写作，都提到了词汇资源。并且每个分数段，对词汇有着相应的要求。
雅思词汇到底要掌握到什么程度，考试机构从来没有公布过词汇的大纲，最主要的来源是要做雅思的真题。雅思真题包括剑桥大学出版的剑桥雅思二、三、四。当然，考生很有可能在自己做题的时候难以判断到底文章里面有哪些单词是必须背诵的，有哪些单词是看了明白就可以的。
　　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
　　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)
　　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
　　5、常用的小作文的趋势句式表达
　　句式一: 变化主体/图画中主体+趋势动词+副词+时间区间
　　Eg: The number of aged people over 65 increased significantly from 1940-2000.
　　The number of aged people over 65 dropped slightly from 1960-1980.
　　The number of aged people over 65 fluctuated between 1 million and 1.2 million from 1940-1950.
　　The number of aged people over 65 remained stable from 1930-1940.
　　句式二: There be + 形容词 + 表示趋势的名词 + in+ 变化的主体+ 时间区间
　　Eg: There was an significant increase in the number of aged people over 65 from 1940-2000.
　　There was a slight decline in the number of aged people over 65 from 1960-1980.
　　There was a fluctuation between 1 million and 1.2 million from 1940-1950.
    新航道雅思培训，由中国雅思之父胡敏教授领衔，中国“雅思梦之队”明星教师授课。签定协议，考试未通过者，免费重读。限制每班的学生数量，让老师能顾及到每个学员。全程跟踪服务，把您的问题留下来，把您的高分带回去。