经济学人的句子。英文：Some carmakers are promising technology that detects pedestrians and cyclists, again overruling the driver and stopping the vehicle before it hits them中文：有些汽车厂家向消费者承诺说，他们正在开发的技术能够探测到行人和骑车者，...
...ll benefit from it.想请问老师这句话里面
we all benefit from it 的it
应该是代指 computers and the Internet
这样应该是双数，为什么不用these或者them吗，it不应该是单数吗？应该什么情况才使用it？这算是因为抽象事物使用it吗？
...型表达的意思都是主动的。如果把这个句型换成“以that从句的主语为主句主语”的被动句，即：It is believed that he have passed the exam.→He is believed to have passed the exam.那么，表达的意思是不是由主动变为被动呢？
...t in the middle of the desert, a thousand miles from any human
habitation. When at last I was able to speak, I said to him:“But– what are you
doing here?”我的疑问1：Now I stared at
this sudden apparition with my eyes fairly starting out of my head in
astonishment.这里fairly副词是修...
...but ever since he moved in, he has had trouble
with cars and their owners. When he returns home at night, he always finds that someone has parked a car outside his gate.
Because of this, he has not been able to get his own car into his garage even
once. Jasper has put up 'No Parking' signs outside h...
...s basic research.查过牛津，该句require跟明显是作“法律法规的要求”，常用被动，即该句应为a development goals for…… was required. 若用主动，其主语应为law,rule等表示法律法规的词，如The rules require his attendence at the court. 请老师点...