The amount of resources
available in an area determine how many organisms can live there.请问老师:上面这个句子正确吗?amount of后面一般是不可数名词,不过有时候也有用可数名词复数,但是动词不是应该根据amount决定的吗?怎么这里使用了复数...
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...
...目:
Her birthday was a week ago, so it _______ (can't / be ) on the 25th.
A. can't be B. can't have been
我不太明白25日是说话之后的日子,还是之前,所以不知道应该用对过去的推测,还是对现在的推测。请专家指教,谢...
He had been in enough briefings over the years. 这种简要介绍他听过多年啦。Have you ordered in enough envelopes this month? 这月你订足信封了吗 ?怎么感觉 in enough sth 像个词组似的,但是查不到?
He theorizes that it is the emotional component of these intangible prizes that make them effective. In fact, vaguely-stated possibilities of winning a prize were more effective than options with hard odds included.hard odds included翻译为 包括了更难的赔率 吗?不是很能理解这部...
我看到一句话:If you are a driver of a vehicle,there is a good
chance it came equipped with this lighting device on both the front and rear.中文译文是: 如果你是一辆车的司机,很有可能这辆车的前后都安装了这种照明设备。我感觉这句话当中的it came很...