So what do you think about the story of Yu Gong？l think it is a little bit silly. It doesn’t seem very possible to move a mountain. But what could Yu Gong do instead of moving the mountains？He could build a road.这一段落里的为啥用could不用can呢?
We are ready for co-operation, but we are not ready to surrender and to be the subordinate of Russia. 我们已经做好团结合作的准备，但是我们不准备投降成为俄罗斯的附属。第二个to可以省略么？因为前面已经有to了，这种结构的省略原则是什么？
Calls and emails are monitored using ever more advanced software.这里的using advanced software现在分层次作状语修饰are monitored，逻辑主语应该是人或者公司吧，因为人才会使用软件去监视。但这个句子的主语是calls and emails，就不一致了吧？还是说...
That
was shortly after the Biden administration announced, on February 5th, plans to
use the Defence Production Act (DPA)—legislation that grants the president
broad industrial-mobilisation powers—to bolster vaccine-making.既是use的目的状语，又是powers的定语？谢谢各位老师！
在《新课标高考英语基础知识精要》一书的p.88上，有这样一道“完成句子”试题：22. Is this software ________________ evaluates the safety of the building being designed？（architect） 建筑师用来估测建筑物之安全性的这种软件正在设计吗？该...
...ranches to the local monastery....where the abbots decided to roast them...When the berries burned.....the beans inside gave off such a pleasant aroma....they brewed them into a stew..Stew, huh?.And over the next few hundred years, it spread to Arabia, Europe....even Sumatra, like that hooch you got...