题目内容
16.His brother has been to Stone Forest twice ______he came to Yunnan.( )A. | after | B. | before | C. | since | D. | for |
分析 自从他哥哥到云南以来,他已经去过石林两次了.
解答 答案:C
分析句式可知,主句是His brother has been to Stone Forest twice,表示已经去过石林两次了,主句使用的是现在完成时,从句使用一般过去时,故使用since连接,表示自从…
点评 考生需掌握since表示自从引导状语从句的时态规则.
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