1、趨勢(shì)類詞匯

　　上升動(dòng)詞類: increase, go up, rise up, grow up, jump up, surge, shoot up, keep an upward tendency

　　下降動(dòng)詞類: decrease, go down, decline, fall down, drop, sink, dip, keep a downward tendency

　　波動(dòng)動(dòng)詞類: fluctuate

　　持平動(dòng)詞類: remain the same, stabilize, remain stable, remain constant

　　修飾動(dòng)詞的副詞: slightly 輕微地, slowly 緩慢地, gradually 逐漸地, steadily 穩(wěn)定地, rapidly 迅速地, moderately 溫和地, 輕微地, significantly 明顯地, sharply 明顯地, dramatically急劇地, drastically 急劇地

　　上升名詞類: increase, rise, growth, jump, surge

　　下降名詞類: decrease, decline, fall, reduction, drop

　　波動(dòng)名詞類: fluctuation

　　修飾名詞的形容詞: slight, slow, gradual, steady, rapid, moderate, significant, sharp, dramatic, drastic

　　2、極值類詞匯和表達(dá)

　　最高點(diǎn): reach the peak/top/highest point

　　Increase to the peak/top/highest point(所有上升類的動(dòng)詞都可以替換掉increase)

　　最低點(diǎn): reach the bottom/lowest point

　　drop to the bottom/lowest point(所有下降類的動(dòng)詞都可以替換掉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、倍數(shù)的表達(dá)方式

　　Double 是兩倍/大一倍

　　Increase/decrease three times 增長(zhǎng)/減少了三倍

　　4、大約的表達(dá)方式

　　About/around + 數(shù)字

　　數(shù)字 + or so

　　Approximately + 數(shù)字

　　5、常用的小作文的趨勢(shì)句式表達(dá)

　　句式一: 變化主體/圖畫中主體+趨勢(shì)動(dòng)詞+副詞+時(shí)間區(qū)間

　　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 + 形容詞 + 表示趨勢(shì)的名詞 + in+ 變化的主體+ 時(shí)間區(qū)間

　　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.