范文第2讲.pptx

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顾家北范文（1）,Olivia,Overview,1,必备句型,2,审题,3,主体段,4,句子带练,审题,动态图还是静态图能否用分子分母法能用不能用时态改写开头段,主体段,确定主要信息极值趋势对比分段,小作文易犯的错误,account for 小作文中定语从句的使用rate和proportion什么叫不要太多读数据highest proportion的用法限制figure的用法限制,例子1,例子2,Another major source of pollution was marine which accounted for 22% in 1997 and dropped to 17% in 2007.The proportion of industrial waste had a similar trend, which dropped from 17% in 1997 to 9% in 2007In contrast, the figure for household waste had a increase, reached to29% in 2007 which was the same as air pollution.,