四. 稳定

　　1.…to remain steady/level/unchanged …保持稳定，几乎不变

　　eg. The rate of …remained steady(fairly level/almost unchanged) during the four years from 1963 to 1967.

　　2.…to level off (vi.)

　　eg. After a steady decline for a whole decade, the …rate shows signs of leveling off.

　　注意：

　　修饰起伏或稳定状态的副词有：

　　almost fairly 可以用于表达起伏，稳定状态的句子中的词组或句型：

　　the general situation was not worsening

　　show indications of improvement

　　it can be predictedthat…

　　eg. The rate of …remained steady during the four years from 1963 to 1967,and it can be predicted that the general situation was not worsening.

　　eg. The rate of …remained steady during the four years from 1963 to 1967,showing signs of improvement in …

　　五. 成正比，反比

　　1.…be in direct /inverse ratio to/with 与…成正比/反比

　　eg. Male illustrations are in direct ratioto /with the advancement of grades, while female illustrations are in inverse ratio.

　　六. 占百分之几，几分之几

　　1….to form/comprise/make up/constitute ….percent …占百分之…

　　eg. Women comprise more than 50% of the US.population.

　　eg. Females make up only 24% of the illustrations whereas males constitute 76%.

　　2.…to form/comprise/constitute a half/third/fourth of……占…的1/2,1/3,1/4

　　eg. Female illustrions form less than a fourth of the total.

　　3.…account for…percent占百分之几

　　eg. ……, accounting for approximately 20 percent of…