题目内容
7.-I wonder how much you charge for your services.-The first two are free_____the third costs 30.( )
A. | while | B. | until | C. | when | D. | before |
分析 --我想知道你的服务收费多少.
--最初的两次免费,而第三次30元.
解答 答案是A.本题考查从属连词辨析.While然而,表示两者间的对比转折;until到…为止; when 当…时;before 在…之前,根据题意可知,前两次和第三次进行对比,故选A.
点评 首先要理解连词的功能:并列连词连接并列的词、短语或句子;从属连词连接主从句;其次理解各连词含义;最后结合语境做出判断.
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