2. 职称英语
  3. New ideas sometimes have to wait for years ______ they are fully accepted.A、when

New ideas sometimes have to wait for years ______ they are fully accepted.A、when

游客2024-10-19  73
问题 New ideas sometimes have to wait for years ______ they are fully accepted.
选项 A、when
B、before
C、after
D、where
答案 B
解析 考查时间状语从句。before引导时间状语从句时表示主句的动作发生在从句动作之前，一般译为“……才……”，句中主句的动作wait发生在accept之前，故选B。when引导的时间状语从句，表示“当……时候”；after引导时则与before相反，表示主句的动作发生在从句动作之后。
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