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We believe that the parcel will reach you safely by the time you read the mail.A
We believe that the parcel will reach you safely by the time you read the mail.A
游客
2025-01-30
37
管理
问题
We believe that the parcel
will reach
you safely by the time you read the mail.
选项
A、reaches
B、will have reached
C、has reached
D、would reach
答案
B
解析
(1)画线部分错误分析。
本题考查by the time的用法。句子的主干部分为We believe that the parcel will reach you safely; by the time you read the mail为时间状语从句,表示“在……之前”。by the time作时间状语时,句子应使用相应的完成体,而题干中为一般将来时will reach。
(2)选项分析。
根据上述分析,by the time作时间状语时,主句应使用相应完成体,由此可直接排除选项A和D;选项C中为现在完成时,表示动作已完成,不合要求;只有选项B使用了将来完成时,符合句意与语法要求。
【知识拓展】语法拓展:by the time的用法。
by the time为介词短语,后可接从句,意为“在……之前”,强调一个动作在另外一个动作之前已完成,因而与by the time搭配的主句要用完成体。常见的句型有:
①表示过去的动作,主句用had done+by the time+从句,从句用一般过去时。
e.g.By the time he woke up,remembered the race and started running,he saw that the tortoise had already reached the finish line and won.
(兔子)醒来时,想起了比赛,于是开始跑起来,却发现乌龟早已到达终点,赢得了比赛。
②表示将来的动作,主句用will have done+by the time+从句,从句用一般现在时。
e.g.By the time he’s twenty he’ll know everyone worth knowing in Washington.
到20岁时,他就会认识华盛顿所有值得认识的人。
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