﹣I'mafraidwecan'tworkoutthemathproblem
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问题详情:
﹣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