题目内容
10._______ environmental damage is done,it takes many years for the ecosystem to recover.( )A. | Even if | B. | If only | C. | While | D. | Once |
分析 一旦环境被破坏,就得需要许多年的时间来恢复生态系统.
解答 答案D.
even if"尽管,即使",引导让步状语从句.if only"但愿,要是",用于使用虚拟语气的句子中.while表示"当…的时候",引导时间状语从句;意为"尽管、虽然",引导让步状语从句;意为"而、但是",引导比较状语从句.once"一旦",引导时间状语从句.分析可知前后两句话之间是逻辑上的"时间"关系,可排除A和B;再结合句子所表达的意思"一旦环境被破坏"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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