请问下面句子中的过去分词短语caused by ill-fitting shoes 是什么成分？是原因状语吗？难道过去分词也可以表原因？Many children have problems with their feet, caused by ill-fitting shoes. 由于穿的鞋不合适，很多儿童的脚都有问题。
The Greek Empire constructed seven systerms to supply as much water per person as is provided in many industrial countries today. 请教老师此句as… as is 的含义。谢谢老师。
-Good evening. I _____to see
Miss Jessic.-Oh! Good evening. I'm
sorry, but she is not in.A. came B. come
C. have come D. had come给出的答案是have come，为什么会用现在完成时呢？自己做题的时候就只能排除一个had come。came和come又该怎么排除呢？
Mr. Bradburn says President Washington set many important precedents for all the presidents who followed him.上句中who followed him是否可以用following him分词定语来替代？在被修饰的关系中如果逻辑上分词和从句作定语都可以时，该怎样选择用分词定语还是...
Althoughit could be a problem if too many parents withdrew their children from school,it is a suitable option. 请问老师although和if 是虚拟语气用法么。 withdrew是过去分词。 另外if什么时候用虚拟是怎么来决定的？
...t I need is a cat, a good cat that can catch mice.” He knew of a man who had cats for sale. So he went to see him. “Do you have a cat that is good for the mice?” he asked the man. “Well, yes. I do happen to have a cat that is good to the mice,” replied the man. “I’ll take it,” said t...
...trol ______to return to their homes.A. the residents
would be permitted B. had the
residents been permitted C. would the
residents be permitted D. the residents
had been permitted我记得only+状语置于句首会引起部分倒装，但这道题中还需要部分倒装吗？我选的是A，但...
The manager was satisfied to see many new products _____(develop) after great effort.这里我知道填 developed过去分词。答案说developed是做宾补。但是我的理解是过去分词做后置定语修饰product，所以到底是宾补还是后置定语呢？还有after great effort 是...