问题 分析：I miss my friends back in China.

在外语教学与研究出版社出版的义务教育教科书英语（一年级起点）五年级上册第45页有一个句子：But I miss my friends back in China.这里的 back 是什么用法？

问题 不同时间或地点状语之间的等级关系

...面的时间或地点名词。例如下面两个句子：Many people eat in restaurants in London.Tom broke his leg last month when he was playing football.这种观点认为第一句中的 in London 只可能是 restaurants 的定语，不可能是状语。第二句中的 when 从句只可能是 la...

问题 ...in watching the eagerness...句子成分和含义疑惑？

No mystic ever saw deeper meaning in common things. The mystic sees the ineffable, and the psycho-pathologist the unspeakable. There is a singular fascination in watching the eagerness with which the learned author ferrets out every circumstance which may throw discredit on his hero. His heart warms...

问题 I am not in at the moment.合逻辑吗

看到这样一个句子：I am not in at the moment.它合逻辑吗？我此时不在家——这不是自欺欺人吗？

问题 arrive in, arrive at以及arrive on的用法问题

When I frist arrived on this island, I had nothing. 一般 arrive 是与 in 以及 at 连用。请问什么情况下用 on 比较合适？ 

问题 In the last act和on the final act of the play的介词问题

1. In the last act, a gaoler would always come on to the stage with a letter which he would hand to the prisoner.2.The curtain went up on the final act of the play and revealed the aristocrat sitting alone behind bars in his dark cell这里为什么一个用 in，一个用 on？

问题 sit down in [into] one's armchair中的介词问题

...位专家老师指点一下，谢谢！误：He was so tired and sat down into his armchair and went to sleep.正：He was so tired and sat down in his armchair and went to sleep.析：英语习惯上说 sit down in one’s armchair，而不说 sit down into one’s armchair。

问题 in, at, on, for的用法区别

The teacher asked the students to practise their English ______ Jim, who is from London.A. in      B. at      C. on       D. for答案是 C，但不明白，请老师解释，谢谢！

问题 最高级的比较范围是用介词in还是of

You make it sound as though he is the most boring man ______ the world.请问这里是填 in 还是 of？还是两者都可以？如果都可，它们有区别吗？

问题 “在树上”（over/up/on/in） a tree 有什么区别

The bird is (over/up/on/in) a tree.  中文翻译都是在树上，那它们到底有什么区别，位置不同吗？

问题 到底有没有be strict in sth这种用法

我在各个词典里都查不到be strict in的例句，只有be strict about sth的用法。但是我在学校发的练习册里和报纸里介绍的又是前者，并且百度里也有前者的用法。那到底哪个是对的呢？

问题 是 in the same school 还是 at the same school

是in the same school对还是at the same school对？有什么区别吗？

话题 in the ground和on the ground

话题 on my mind与in my mind

问题 这里的his being in possession of it是什么成分呢，这里该如何翻译？

Well, the brothers chatting along, happened to get to wondering what might be the fate of a perfectly honest and intelligent stranger who  should be turned adrift in London without a friend, and with no money but that million-pound bank-note, and no way to account for his being in possession of it....