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...
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 ...
____was the day before yesterday? It was Wednesday, the 2nd.A. What day B. What C. What time D When答案选择B请问这道题,是不是因为答句里既有星期又有日期,所以what后面day和date都不加,以此来对应答句的问题?还是说这道题就是错的,B选项落了...
IT
WAS JUST one of more than 2,000 murders in 2009 in Ciudad Juárez, a Mexican
city across the Rio Grande from El Paso, Texas: someone shot in an alley, no witnesses. no witnesses作状语吧?谢谢各位老师!