作业帮一道关于时间状语从句连词的英语选择题
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/08/23 06:08:09
一道关于时间状语从句连词的英语选择题
Ships may have to wait for a couple of days,_____ waves are not rough,permitting them to enter the harbor with safety.A.after B.while C.when D.since
Ships may have to wait for a couple of days,_____ waves are not rough,permitting them to enter the harbor with safety.A.after B.while C.when D.since
C 根据句意 排除D 选项A after引导时间状语从句 从句不可否定 While引导的从句的谓语动作必须是延续性的,并强调主句和从句的动作同时发生 when引导的从句的谓语动词可以是延续性的动词,又可以是瞬时动词.并且when有时表示“就在那时”. 此句中waves are not rough表示波浪平息之时 故选when.