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问题 介词后面是宾语还是状语(怎么判断)

为什么介词后面有时候是宾语，有时候又是状语？The school lies in the center of the city.为什么in the center of the city是状语，为什么不能理解成in是介词，the center of the city是lie的宾语？

问题 逗号后的部分是什么成分

...s vocabulary into a large number of different topics,probably far too many for a notebook.这里逗号后的probably far too many for a notebook是什么语法，什么成分，是定语从句修饰整个句子吗？如果是限制性定语从句，为什么会有逗号：如果是非限制性，那...

问题 有具体的表将来的时间状语要用一般现在时吗

Parents' meeting will be held at 8:00 tomorrow. Parents' meeting is held at 8:00 tomorrow.  哪个句子是对的。还是都是对的。给出了具体时间点的表将来的时间状语就一定要用一般现在时吗？

问题 有具体的表将来的时间状语要用一般现在时吗

Parents' meeting will be held at 8:00 tomorrow. Parents' meeting is held at 8:00 tomorrow.  哪个句子是对的。还是都是对的。给出了具体时间点的表将来的时间状语就一定要用一般现在时吗？

问题 为什么用ed而不用ing形式

Tom, ___ studying, knows nothing about what is happening. A. devoted to B. having devoted ? C. being devoted D. devoting to答案为A 原因是什么为什么用ed而不用ing形式？不是主语 tom发出的动作么？谢谢

问题 after class与after the class

Let’s meet at the school gate ______ class.A. after classB. after the class答案是A，为什么不能选 B 呢？

问题 ​考研难句的理解（the还是that）

考研原句，这个句子感觉语法有点奇怪，把the换成that的话我就能理解。但是现在要怎么理解？This is something the mostly happens with all of us.

问题 the number of books sold 还是 is sold

The number of books sold this month has reached 2,000.这里是不是 the number of books (which was) sold this month has reached 2,000？the number of books was sold this month.  这句话对不对呢？

问题 up的用法（from a point further up the river）

...在）下游方向 Something that is moving downstream is moving towards the mouth of a river, from a point further up the river. Something that is downstream is further towards the mouth of a river than where you are.请问老师，这个成分from a point further up the river. 怎么理解？

问题 on the one hand用法疑问

an imbalance between ecological wellbeing and natural resources on the one hand and economic development on the other这个矛盾是谁和谁的矛盾呀？还有，between后面的名词可以是两个以上吗？

问题 in the face of strong macroeconomic headwinds的含义

Apple's chief executive Tim Cook said the company performed well "in the face of strong macroeconomic headwinds".请问：in the face of strong macroeconomic headwinds 的背后含义是什么？

问题 There goes the train.中的there有具体的含义吗

There goes the train. 翻译是：火车走了。句中为啥没有翻译出 there 的含义？There goes the train 是否与The train goes. 意思完全相等？前句为啥要用倒装？哪些句子可用倒装？有规律吗？？请老师解答！

问题 either…or…的否定式是什么

如何构成either…or…的否定式，是not either…or…？还是neither…nor...？

问题 现在分词做状语和宾补区别

We welcome he not smoking.如何区别smoking是宾补还是现在分词做伴随状语，感觉都一样？

问题 otherwise 的翻译问题

Addressing things that bother you while they're still little can help your roommate be aware of something he may not otherwise know.问：此句应该翻译成什么？尤其是此处的 otherwise，应该译为什么？