摘要: before 的用法: before的本意为“在--之前 .根据具体语境还可理解为“还没来得及/还没有--就--.趁着还没--就--.不知不觉就--.--才-- 等.如: (3)The American Civil War lasted four years the North won in the end . A. after B. before C. when D. then 解析:美国内战“在北方获胜之前 延续了四年.故选B. (4)Someone called me up in the middle of the night, but they hung up I could answer the phone. A. as B. since C. until D. before 解析:选D.句意为:有人半夜打来电话.但是我还没来得及接.对方就挂了电话.

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