描述變化:表示增加、減少和波動的詞匯和套句;如:increase/jump/rise/decrease/drop/fall/fluctuate等;副詞: suddenly/rapidly/dramatically/significantly/sharply/steeply /steadily/gradually/slowly/slightly等;形容詞: sudden/rapid/dramatic/significant/sharp/steep/steady/gradual/slow/slight等;名詞: increase/jump/rise/decrease/drop/fall/fluctuation等。表示變化不大或沒有變化的套句:the number of remained steady/stablefrom to (數(shù)量保持穩(wěn)定);there waslittle/hardly any/no changein the number of between and (幾乎沒有變化)。表示最大值和最小值的套句:最大值:the figurespeakedat 20% in December(數(shù)字在12月達到峰值);最小值:the figuresbottomed outat 20% in December(數(shù)字在12月達到最低點)。
描述對比:表示A和B有相同點或不同點的常用套句;A had a quarter/half/twice/one third as many students as B.(A有B四分之一/一半/兩倍的學(xué)生);A had about the same number/proportion of students as B.(A和B有相同數(shù)量/比例的學(xué)生);A had something in common with B.(A和B有共同之處);the difference between A and B lies in(A和B之間的區(qū)別在于)。