Unit7 population & Health课件.ppt

Unit 7 Population & Unit 7 Population & Health Health Part 1 Numbers Part 1 Numbers ??一、数字增减的表示方法一、数字增减的表示方法??( (一一) )表示表示" "增加增加" "的基本句式的基本句式??英语中常用来表示英语中常用来表示" "增加增加" "的单词和词组有的单词和词组有:climb, go up, grow, :climb, go up, grow, increase, jump, rise, soar, up increase, jump, rise, soar, up 等等。下面我们介绍用这些词来等等。下面我们介绍用这些词来表示数字增加的具体句式表示数字增加的具体句式: : ??1. ( 1. ( 表示增加的表示增加的) )动词动词+ by + + by + 数词数词(+ (+名词名词) ) ?? In ing 20 years, China In ing 20 years, China ’’ s population above the age of 16 s population above the age of 16 will grow by million annually on average. will grow by million annually on average. 在未来的在未来的 20 20年内年内, , 中国中国 16 16岁以上的人口平均每年将增加岁以上的人口平均每年将增加 550 550 万。万。??2. ( 2. ( 表示增加的表示增加的) )动词动词+ up + to + + up + to + 数词数词(+ (+名词名词) ) ?? In 1999, the pany had an annual sale of nearly 400 In 1999, the pany had an annual sale of nearly 400 million million yuan yuan , but its sales shot up to billion in , but its sales shot up to billion in 年年, , 这家乳品公司年销售额近这家乳品公司年销售额近 4 4亿元亿元, ,到了到了 2002 2002 年年, ,年销售额激增年销售额激增到到21 21亿元。亿元。??3. 3. 百分数百分数+ up, + up, 表示净增数表示净增数?? The grain output in this province is 20% up since 1990. The grain output in this province is 20% up since 1990. 自从自从 1990 1990 年以来年以来, ,这个省的粮食产量净增了这个省的粮食产量净增了 20 20%。%。 4. 4. 百分数百分数+ ( + ( 表表示示" "增长、扩大增长、扩大" "等含义的形容词等含义的形容词) )比较级比较级+ than, + than, 表示净增的表示净增的数量数量 The retail sales of this year are expected to be six percent The retail sales of this year are expected to be six percent higher than last year. higher than last year. 今年零售额有望比去年增长今年零售额有望比去年增长 6 6%。%。??( (二二) )表示表示" "减少减少" "的基本句式的基本句式??英语中常用来表示英语中常用来表示" "减少减少" "的单词有的单词有:cut, decrease, down, drop, :cut, decrease, down, drop, fall, off, reduce fall, off, reduce 等等。下面介绍用这些词来表示数量减少的等等。下面介绍用这些词来表示数量减少的具体句式具体句式: : ??1. ( 1. ( 表示减少的表示减少的) )动词动词+ by + + by + 数词数词(+ (+名词名词) ) ?? Profits of the car factory fell by 62 percent to $340 million. Profits of the car factory fell by 62 percent to $340 milli