题目内容
8.Don't be afraid of asking for help ______ it is needed.( )| A. | unless | B. | although | C. | if | D. | since |
分析 如果需要帮助,不要害怕寻求帮助.
解答 答案C.
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.although"尽管,虽然",引导让步状语从句.
if"如果",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.分析可知前后两句话之间是逻辑上的"条件"关系,可排除B和D;再结合句子所表达的意思可排除A,故答案选C.
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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