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高 频 考 点 连词while的用法 教材原文：Her singing was full of feelings；the first part of the song was filled with anger，while the last part expressed love and joy.(P23) ①(2010·全国Ⅰ)Mary made coffee________her guests were finishing their meal. A.so that B．although C．while D．as if 解析：句意：客人们就要吃完饭的时候，玛丽去煮咖啡了。考查连词。so that以便，为了，用来引导目的状语从句。although虽然，尽管，用来引导让步状语从句。while①在……期间；当……的时候，用来引导时间状语从句； ②然而，而(＝but)，表示对比。as if(＝as though)仿佛，好像，用来引导方式状语从句。根据句意可知C项正确。 答案：C 高 频 考 点 连词while的用法 教材原文：Her singing was full of feelings；the first part of the song was filled with anger，while the last part expressed love and joy.(P23) ②(2009·安徽)—I wonder how much you charge for your service. —The first two are free________the third costs $30. A. while B．until C．when D．before 解析：句意：——我想知道你要收多少服务费。—前两次是免费的，但第三次的费用是30美元。While而；但是；until直到；when当；这时候；before之前；才；就。 答案：A | 
