英语倍数的表达方法.ppt

英语倍数的表达方法 当我们要表达甲是乙的几倍时，通常可使 用以下句型： 1. 倍数 + as + 形容词或副词的原级 + as + 其他。 This tree is three times as tall as that one. 这棵树是那棵树的三倍高。 His father is twice as old as he. 他父亲的年纪有他两倍大。 1.亚洲的面积是欧洲的四倍。 Asia is four times as large as Europe. 2.这块大石头的重量是那块的三倍。 This big stone is three times as heavy as that one. 3.那架飞机的飞行高度是那只风筝的十倍。 The plane flew ten times as high as the kite. 这种结构又常演变成下列两类： 倍数 + as + many + 可数名词复数 + as； 倍数 + as +much + 不可数名词 + as。 There are seven times as many people as I expected. 是我预料的人数的七倍。 There is five times as much coffee in this glass as in that one. 这个杯子里的咖啡是那个杯子里的五倍。 n2. 倍数 + 形容词（或副词）的比较级 + than + 其他。 The Yangtze River is almost twice longer than the Pearl River. 长江差不多比珠江长两倍。 The dictionary is exactly five times more expensive than that one. 这本字典比那本恰好贵5倍。 1.这根绳子是那根绳子的两倍长（比那根绳子长一倍 ）。 nThis rope is twice longer than that one. 2.这个大厅比我们的教室大四倍(是我们教室的五倍) 。 n This hall is five times bigger than our classroom. 3.这辆小车的速度比那辆卡车快一倍（是那辆卡车的 两倍）。 nThe car runs twice faster than that truck. n3. 倍数 + the size / height / length / width. etc. + of + 其他。 nThe newly broadened square is four times the size of the previous one. n 新扩建的广场是未扩建时的四倍大。 n计量名词 ：size大, length长, width宽, height高, depth深，weight重 1.这条街是那条街的四倍长。 nThis street is four times the length of that one. 2.这座山的高度是那座小山的四倍。 nThis hill is four times the height of that small one. n4 计量名词 + of + 名词 + be +倍数 + that + of + 其他。 nThe size of the newly broadened square is four times that of the previous one. n新扩建的广场为以前的四倍大。 n5. 倍数+what从句。 The production is now three times what it was ten years ago. 现在的产量是十年前的三倍。 n6. 倍数 + more + 名词 + than +其他。 There are nine times more books in his bag than in yours. 他书包里的书比你书包里的书多九倍。 7. 其他表达。 “twice+名词”结构 该结构可直接译为“是的两倍” He eats twice the amount you eat/what you eat. 他吃的是你的两倍。 He is twice the man he was. 他比过去强壮了一倍。 She has twice the courage he has. 论胆量,她还胜他一筹。 1）Im twice/ double his age. n 我的年龄是他的两倍。 n 2）Ive paid five times the usual price for the stamp. n 我出了5倍于往常的价格买这枚邮票。 n3）The average income of the staff has been increased by 50 percent compared with last year. n 与去年相