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问题 为何是whether it be而不是whether it is呢

Almost all of us know how to play an instrument, whether it be the electric guitar, the bass, drums, or keyboard. 请问，原句中为何用 whether it be 而不是 whether it is?

问题 as是引导定语从句吗(它后面为什么接动名词)

There is a tendency to think of occupational stress as applying mainly to the busy executive, but such people often experience less stress than those in the ranks immediately below them.老师，as后面为何跟doing（applying）? 

问题 副词修饰介词和连词时会连同后面的宾语和从句一起修饰吗

He lives far beyond the tower.I heard of her long before I met her.副词far和long是分别修饰介词beyond和连词before，包括后面的介词宾语和连词后的从句吗？谢谢老师的回答。

问题 现在分词作状语和定语

1. Taking a book off the shelf he soon found himself absorbed, not by the words of the book, but by the notes penciled in the margin.此句现在分词作状语表示伴随还是原因？2. Each letter was a seed falling on a fertile heart. (每一封信都如一颗种子撒入肥沃的心灵之土...

问题 有些动词及物与不及意义相同，为什么加介词

He believed in the absolute power of the King.believe英 [bɪˈli:v]   美 [bɪˈliv]  v.信任;料想;笃信宗教vt.相信;信任;以为，认为;对…信以为真老师，believe in+名词,~in加名词有对……是信任的？它是及物动词，为什么还用不及物动词加介...

问题 stand是动词还是系动词的判断(stand in total contrast to)

The poverty of her childhood stands in total contrast to her life in Hollywood.stand是动词还是系动词？作什么成分？

问题 伴随状语还是后置定语

...ident Obama and his Chinese counterpart, Hu Jintao, emerged from two hours of talksTuesday morning pledging to continue efforts to strengthen the growing partnership between the two countries ，and  to  work  together  to  address  global&...

问题 如何理解这里的介词from ?

...所以，我个人认为是表示“原因”的from, 这里等于because of，似可翻译为：民主党说特朗普强调的治安是试着转移注意力，因为他的政府在控制病毒方面失利。请教老师分析批评指正！

问题 这里是think sb as sth 结构吗？

...教老师：1）这里是think sb as sth 结构吗？以前只看到think of sb as sth结构，没看到有think as as sth。这2个结构用法含义有什么不同呢？2）如何理解as all that ? all that 什么意思呢？

问题 as occurs on highways 这句话的主语是不是省略了

This thesis is concerned with a particular case of the above problem in which all toll arcs are connected and constitute a path, as occurs on highways.

问题 "the+比较级, the+比较级"结构可以不对称吗

The longer an advertisement stays on a user's screen, the greater the possibility of him or her tapping on it and the manufacturer making money. 这句话前面半句有“the+比较级+名词+动词stays”，后半句只有“the+比较级+名词”，请问这种用法对吗？

问题 关于to do 的逻辑主语

...道真实的情况是如何呢？另外：Therefore to increase the yield of the targeted reaction products, many factors are taken into consideration.这句话语法对不对呢？

问题 what引导的从句可以作what的同位语从句吗

Last, good performance is not defined by employees’ locations at specific times of the day but by what they achieve—what Mr Bloom calls “managing outputs, not inputs”.破折号后是对前面的补充说明，那么能不能说what引导的是同位语从句？谢谢各位老师。

问题 judging by与judged by有区别吗？

表示“根据……来判断”，好像 judging by 与 judged by 都有人使用，它们之间有区别吗？比如下面一道题，如何选择？_______ by what everyone says about him, I’d say he has a good chance of winning. A. Judging B. Judged

问题 难句中的多个时态疑问

...at goal? He had let his whole team down.His team had lost the game because of him.我的疑问：1. would 在这此的用法，是过去将来时吗？2. could have missed 的用法？是对过去的推测？3. had let,had lost 是过去完成时，过去完成时是表过“过去的过去”。这...