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问题 by which 是什么语法结构

向给位老师请教一下：The distance by which these accidentals change the pitch is called a semitone.这句话应该如何理解呢？我知道 accidental是升降记号的意思，semiton是半音的意思，但 by which 是什么语法结构呢？请各位老师指点一下！

问题 句子改错(涉及so, by)

If we decide that language did originally develop, possibly involving from animal communication, we can only do so by assuming evolution to be a universally valid principal. 这句话改错说把by去掉。请问老师so这里指代什么，不去掉by好像也翻译的通。

问题 where在句中的用法

Other examples might be where one student is given a picture and describes the picture for another student to draw, or where students draw each other's family trees. 老师好！这里的where是什么用法？是引导表语从句吗？可是这里没有疑问的意思啊？

问题 possible 为什么放在名词之后

We house a broad range of experts united by the common goal of creating the best language learning tools possible.请问这句话中possible修饰什么成分，为什么放在名词之后？这个possible是因为create才放在句尾的吗？

问题 一个句子三个从句如何分析（并翻译）

Making a timeline that shows when different events happened can help you understand how the events are connected to each other.本句摘自高中英语新教材（人教版）必修二第1单元(p5)。请帮忙分析一下句子结构并翻译一下，谢谢！

问题 US（美国）前面必须要有定冠词吗

Christmas is a very important festival in Britain and US.有人认为这个句子是错的，应该在 US 前面加上定冠词。是这样吗？

问题 表示“大量许多”的主谓一致问题

a large quantity ofquantities ofa variety ofvarieties ofa mass ofmasses oflarge amounts of等等这些表示大量许多的量词修饰名词的时候，谓语用单数还是复数，有没有权威的说法，网上搜索有各种答案，有点晕。遇到这些不定量的词修饰的时候，怎...

问题 play sth out

One way this could play out is having a joint account used to pay all of the household bills, while each partner keeps their own personal savings account. 这句话one way this could pay out是定语从句吧？是不是play way out?这个way做宾语？

问题 seem 是否接 to be 的疑问

He seems ______ very disturbed about his work lately.A. to be        B. 不填如何选？seem 后面的 to be 不是可有可无的吗？

问题 名词性句还是定语从句

老师您好。Tired and disappointed, the resure team finally reached ______ used to be a village.这里的空填what。 答案说这是名词性从句，但我觉得空前面不缺成分，reach 不是个不及物动词吗？后面又缺成分，应该是个定语从句啊。谢谢老师的...

问题 这个句子中的should是虚拟语气吗

Can you believe that in such a rich country there should be so many poor people? 如何翻译句子？如何理解 should？在此句中 should 是虚拟语气吗？谢谢专家。

问题 英语句子翻译（英译汉，有点难）

They predict there is a greater than 90% probability that by 2100,the average growing-season temperature in the tropics and subtropics will be higher than any temperature recorded there to date.请专家老师帮忙翻译一下！

问题 几个句子成分的理解问题

1. The car is running.running 不是表语么？怎么理解呢？网上有个视频讲解说表语就是主补对么？我觉得不太好理解!2. I am reading a book in the libary.in the libary 是状语，但可以理解成定语行么?谢谢。

问题 介词for也存在动宾和主谓关系吗

Celebration for a little person who has my crazy love.上句中介词for是与celebration构成动宾关系吗？所有介词都存在动宾，主谓和所属关系吗？还有其他别的关系吗？谢谢老师。

问题 介词amid表达的含义

Here, amid the miles of white-sand beach and tropical woodland, you can fully unwind and take a break from all of the texts, emails and phone calls that bombard our daily lives.介词amid在上文中表达怎样的含义？使用in和on不好吗，谢谢老师的回答。