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average正误用法 | |||
作者:admin 文章来源:本站原创 点击数: 更新时间:2009-2-1 |
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average正误用法 ■平均每天有10个学生缺席。 误:An average of 10 students was absent each day. 正:An average of 10 students were absent each day. 析:“an average of+复数名词”作主语,谓语用复数,而“the average of+复数名词”作主语,谓语通常用单数。如:The average of these numbers is 50.(这些数的平均数是50)。 ■我们平均每天收到10封信。 误:In (the) average we receive ten letters each day. 正:On (the) average we receive ten letters each day. 析:on (the) average(平均)是固定短语,不用介词 in。 ■昨天的平均气温是多少? 误:What was the temperature of average yesterday? 正:What was the average temperature yesterday? 析:average 可用作形容词(意为“平均的”)直接放在名词前作定语。又如:The average age of the boys in this class is fifteen. (这个班男生的平均年龄为15岁)。 |
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