﹣I'mafraidwecan'tworkoutthemathproblem

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问题详情:

﹣I'mafraidwecan'tworkoutthemathproblem

﹣I'm afraid we can't work out the math problem________the teacher helps us.

﹣That's true. It's too difficult.(  )

A.if                          B.unless                     C.because                 D.as soon as

【回答】

B.

【分析】﹣﹣恐怕我们不能解出这道数学题,除非老师帮助我们.

﹣﹣那是真的.它太难了.

【解答】if如果;是否;unless除非,如果不;because因为;as soon as一……就.根据we can't work out the math problem"我们不能解出这道数学题",及the teacher helps us"老师帮助我们"可知,应该是"除非",用unless引导条件状语从句.

【点评】连词可以表并列、承接、转折、因果、选择、假设、比较、让步等关系,要结合语境,选择合适连词用法.

知识点:连词

题型:选择题

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