The library ______for more than 60 years since it _____ in 1940.
A. has been open; opened
B. has been opened; opened
C. has opened; was open
D. has been open; was open
正确答案为A。但 D 为何不可以呢?有资料说,当 since 引导的状语从句的谓语动词是延续性...
Isn’t it strange that he should have left without telling us. 真奇怪,他没说一声就走了。
请问上句中的“should have left”是一种{should have+Ved}结构——表“过去该做而实际上未做的动作(其否定形式则表【过去不该做...
...f the signal and noise travelling down the communication channel, and on its capacity . 问题1:第一个and并列的成分是哪两个?问题2:travelling down the communication channel是什么成分?是现在分词作状语吗?还是作定语修饰noise/the signal and noise?如何...
... New Year's Eve 翻译“除夕”,我认为是错误的:They went to a party on New Year’s Eve. 除夕他们去参加晚会。We are having a party on New Year’s Eve. 我们将举行除夕晚会。There were a large number of DUI arrests on New Year’s Eve. 除夕夜有许多酒后驾...
各位老师好,请教各位在树上的问题1. I left my cap on a tree.这句话是一本教材的原文,但帽子不是树本身的东西,这里用了on是指帽子在树的表面吗?2. She left her kite ______ the tree.请问这里填什么?1)in:因为kite不是树上的东西 ...