问题 believed to是被动还是过去

a house that people believed to be haunted.请问老师这个believed是过去式吗?后面这个to be haunted可以省略成believed haunted吗？

问题 He must have been sleeping at the moment, _______

问题 could you tell me where the library is at？这句话对吗？

问题 Seat的用法:Seated on the sofa, we began to watch TV 从

问题 脑筋对这句话转换不过来，可以提供一个更容易理解的思路嘛

There are almost as many definitions of history as there are historians.有多少史学家，就有多少种对历史的解释。如何更好理解as there are historians，这后半段.麻烦老师解答！

问题 关于CaGEL非限定分句里依附助动词分析的疑惑

...不是依附语dependent了？（if have were simply an optional dependent of interview，作者都用虚拟语气were了，说明have不是依附语）同样是过去完成体，为什么分析不同？

问题 关于CaGEL非限定分句里依附助动词分析的疑惑

...不是依附语dependent了？（if have were simply an optional dependent of interview，作者都用虚拟语气were了，说明have不是依附语）同样是过去完成体，为什么分析不同？

问题 非谓语的被动时态如何用

The doctor recommended the room to be aired.为动词不定式一般式的被动时态，请问改成这样：The doctor re commended the room being aired.行吗？如何区分动名词和现在分词的被动时态？

问题 动名词问题

 The less sleep you get, the less time the brain has to regulate stress hormones, and over time, sleep deprivation could permanently hinder the brain’s ability to regulate these hormones, leading to elevated blood pressure. 请问老师 leading to是动名词作主语吗？谢谢

问题 among which的用法分析

Secondly, there are many attractions that interest me a lot, among which is Big Ben.其中among which是什么用法？麻烦老师们详细划分一下成分，分析用法并翻译，谢谢！

问题 study为什么用复数(studies)

My two elder brothers help me a lot in my studies.请问这里的 study 为什么用复数？

问题 关于educate的非谓语动词形式

老师您好，请问：________（educate）in a key university is what many students long for.这里应该填写它的什么形式呢？

问题 no more...than...的词性问题

He is no more a fool than you are.请问这里的 more 是什么词性? 是限定词还是副词?

问题 句子分析

Determining where we are______our surroundings remains an essential skill for our survival.A. in contrast toB. in defense ofC. in face ofD. in relation to答案：D  但是我完全不明白 单词和短语的意思我都知道 但就是读不懂这个句子 不知道where...

问题 thumbs up还是thumb up

give sb a thumbs up这里指的是竖一个大拇指还是两个？如果是一个为什么要加s?