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问题 dating back to的用法

The xxx Museum is home to a set of  xxx hair ribbons made of gold dating back to 2600-2500BC.dating 是现在分词做状语吗？怎么理解呢？如果它是做状语，为什么不用时间状语从句呢。如果dating做时间状语，麻烦老师写出可以替换它的常见时间状语从...

问题 现在完成式的表意理解

...?还是说即可能结束也可能持续下去? 如例句:He has worked in the company for 20 years.这句是表示他已经工作20年，但以后不工作了，还是工作到现在还会一直工作下去?

问题 as的用法和翻译

I want to stay with my poor mother,  but the doctors warn me that she may linger on as she is, or be a permanent invalid. 这句话粗体部分的意思我大概是明白的，但是as she is这个是什么成分？具体怎么翻译？它省略了什么啊？还有这个or be的前面省略的是s...

问题 so are all的翻译

The pursuit of knowledge is, I think, mainly actuated by love of power. And so are all advances in scientific technique.我认为，对知识的追求主要是受权欲的驱使，于是就有了科学技术的进步。想请教各位老师，so are all为什么这样翻译？是倒装吗？

问题 作保留宾语的关系代词是否可以省略

But surely the strategies you were taught for dealing with that vocabulary were helpful.这是师生对话材料里的一句话。各位老师，如果是书面语体，作保留宾语的关系代词是否可以省略？我查了下资料，没见到具体说法。

问题 句中的dying是否表示进行含义

The DVD extras include three alternative endings, all of which conclude with Jim dying.句子里的现在分词dying，表示的是Jim dies还是Jim is dying? 学生的想法是dying在这里表示的不是习惯或状态，而是事件，所以应该是Jim is dying，这种看法是否正确？希...

问题 这里的quite是限定词还是副词呢

The warning had come as quite a shock.这里的quite是限定词还是副词呢？还有，为什么只有一个as？比较句不是应该是as quite a shock as...吗？没看懂。

问题 such和so作代词的区别

By doing so (such), we may discover the benefits of simply watching a sunset.这句话中，so为什么不能换为such？such也可作代词，比如：We were second-class citizens and they treated us as such.

问题 as though/if 虚拟语气的时态

The computer "teacher" was talking with its students as though it _____ a human teacher.请问各位老师，这个空填had been还是were。我看网上有答案说是were，我认为had been对。谢谢各位！

问题 具体名词抽象化怎么表示

...表抽象意义。像lose heart这种一个不加冠词表抽象，而像the schoolboy（中学生的稚气）这种加定冠词表抽象，到底是怎么一回事呢，他们有什么区别

问题 从句后句子的语序

He also pointed out that as the world, China and CPC undergo profound changes, China is confronted with unprecedented situations.这句话中that引导宾语从句，that后边直接跟as引导的状语从句。那么，就语序而言，从句里的语序是否和非从句的语序一样灵活？...

问题 one of an是什么用法

But the relation, in order to be one of an argument, it has to what? 但是这种成为论点的联系，必须怎么样呢？one of an是什么用法，为什么不直接说an argument？one of 后面不是要用可数名词复数嘛？

问题 比较句的省略或倒装

ITA, the successor to Alitalia, Italy’s perennially disappointing flag carrier, could be snapped up by Germany’s Lufthansa; IAG group, parent of British Airways and Iberia, may bring Portugal’s TAP into its fold. Better that than permanent flightlessness.  请问一下亲爱的老师，最后...

问题 如何理解 skill sets 的意思

...rd that end, O’Malley requires all current employees and new hires to further develop their skill sets and attain the status of Certified Professional in Supply Management这里的skill sets中的sets字面意思是“组，套”，还有“集合”的意思，如和理解skill sets的意思？

问题 but(除…外)置于句首是否常见

But to run the country and get legislation through parliament, he needs a prime minister and a government, and that looks tricky.问题：请问but 在这里是表示除…以外的意思吗？置于句首是否常见？