定语从句的关键点是先行词和引导词。当先行词是表示情况、方面、处境的名词(situation,condition,point,case,position)时,引导词用where.
There are no known cases ( ) this security has been violated.
答案:where
翻译:还没有发现安全被侵害的案例
定语从句的关键点是先行词和引导词。当先行词是表示情况、方面、处境的名词(situation,condition,point,case,position)时,引导词用where.
There are no known cases ( ) this security has been violated.
答案:where
翻译:还没有发现安全被侵害的案例
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