1. could表示请求或允许，只能用于疑问句吗？下面的例句是错的吧？
You could/might sit here!
2.could，can表推测时：
can可以对现在和将来推测
That man can't be Mr. Smith. He has gone abroad. 表现在
If winter comes, can spring be far behing? 表将来...
... instructing him to give up the search.问题：后面是动名词引导的从句吗？是否可以补充完整为which was instructing him to give up the search? 此句能否改为：A radio message from the mainland which (that) had been received by the ship's captain instructed him to give up...
... Diomedes
Islands, in the Bering Sea, making it
possible to travel through time just by crossing only 3.8 km. Not only are these two islands apart in two different countries but
also that they are 21 hours apart in
time. When it's noon on a Thursday in the American Little Diomede, it's 9 a.m.
on Fri...
world作定语时，有时用所有格，如：Australia is one of the world’s main producers of wool. 澳大利亚是世界上主要羊毛生产国之一。Today one third of the world’s households are headed by women. 当今，世界上有三分之一的家庭由妇女掌管。有时不用所...
...what of store shopping是A of B的结构吗，所以of store shopping看作定语吗。还是看作状语修饰think。以及what提问，是只能回答名词吗，应该怎么回答，突然有点懵。2.若改成How do you think of store
shopping in the future是不是就错了，因为还原...
I hope you come here to Naples to see the world in which i took refuge.1. I took refuge是在world还是Naples？GPS is actually but part of a larger movement which will eventually put cars on smart ways.2. 是GPS还是movement把cars给put on smart ways？谢谢!