eg. The rate of. rem ained steady during the four years from 1963 to 1967, and it can be predicted that the general situation was not worsening g. The rate of. rem ained steady during the four years from 1963 to 1967 showing signs of im provement 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 ratio to /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 g Fem ales make up only 24% of the illustrations whereas males constitute 76% 2.… to form/ comprise/ constitute a hal/ third/ fourth of……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 七.倍数 1. A be. times as much/many as B eg. The annual rainfall of Hunan is 5 times as much as that of sichuan bles/ s half /triples b a是B的两倍,一半,三倍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 ratio to /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… 七． 倍数 1．A be …times as much/many as B eg. The annual rainfall of Hunan is 5 times as much as that of Sichuan. 2．A doubles/is half/triples B A 是 B 的两倍，一半，三倍