题目内容

16．I won't give you any help __ you tell me the truth．It's none of my business．（　　）
A．unlessB．sinceC．as ifD．even if

分析 即使你告诉我真相，我也不会给你任何帮助，这不是我的事．

解答 答案D．
unless"除非，如果不"，在意义上相当于if…not，因此在有些场合中unless与if…not可互换使用，引导条件状语从句．since意思是"自从…以来"时，引导时间状语从句；意思是"既然"时，引导原因状语从句．as if"仿佛，好像"，引导方式状语从句．even if"尽管，即使"，引导让步状语从句．分析可知前后两句话之间是逻辑上的"让步"关系，再结合句子所表达的意思可知答案选D．

点评 本题考查从属连词的用法．连词的用法辨析，要注意分析主从句之间的逻辑关系，再确定相应的连词，同时注意不同的连词的语义及用法区别．

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