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问题 being combined是哪一个成分

Nowhere in nature is aluminum found free, owing to its always ______ with other elements, most commonly with oxygen.A. being combinedB. having combinedC. to combineD. combined这道题的解析是owing to后要接名词或动名词，根据题意，此处要用被动语态，所以答案为A。但...

问题 be horrified +to do中不定式为补语还是状语

I am horrified to learn that girls barely eighteen have already been in and out of seven to eight “hook ups”. 请问老师：to learn that...不定式短语理解为horrified的补语还是状语？谢谢老师。

问题 air force作主语时谓语动词用单数还是复数

air force用作主语时，谓语动词用单数还是复数？看到用单数的用法： The Air Force maintains many kinds of aircraft.  空军装备了许多飞行器。 请问air force用作主语时也可以用复数吗？

问题 非谓语动词能作状语修饰非谓语动词吗？

Thankfully,you have survived the experience to live to talk about it.我知道to live引导一个结果状语，但仔细分析，to talk abut又是作什么成分？是作目的状语还是live的结果状语亦或是live的宾语？非谓语动词比如不定式能做状语修饰非谓语动词吗...

问题 without exception to my knowledge是什么意思

And as discussion of language acquisition becomes more substantive, it moves to assumptions about the language organ that are more rich and domain specific, without exception to my knowledge.请问：without exception to my knowledge是什么意思？

问题 have to是否为情态动词(后接动词时如何区分谓语)

老师您好:Fifteen policemen had to push very hard to get him off the main street.疑问：have to 是否为情态动词？网上说法很多。本句中谓语是 had to push 还是push?谢谢，盼复！

问题 can not help but do的意思

Wasn't I tempting fate: how could these hard-nosed Nazi detectives help but smell out the diaries beneath my broadcasts?can not help but do意思是不可避免、情不自禁的做.....但是这里变成特殊疑问句，没有了can not 还是那个意思吗？翻译句子有点乱了!

问题 for 在这个句子中是引导原因状语从句吗

...anies  entering Chinese markets, transliterations are a thing of the pastfor在这里难道不是引导原因状语从句吗？为什么可以直接填entering？我看到这个句子第一反应是填 has entered 或者 endered，而万万没想到是直接填entering。

问题 不定冠词和定冠词表类别时的区别

A horse is a useful animal.The horse is a useful animal. Horses are useful animals 老师，这三个都翻译成“马是有用的动物”。他们三个有什么区别?

问题 介词after与for有什么区别

老师：您好！My family had a dissussion ____ my study plan ____ the summer vacation.a.about; after      b.about; for 答案选择的是b. 他要表达的意思是：我的家人就暑假的学习计划进行了一次讨论。为什么不可以选择a. 如果选a是不是：...

问题 关于复合名词的复数问题

The three _____  upstairs are too small to have enough _______ for a double bed.A. room room B.room rooms C. rooms room D. rooms rooms 这道题答案说选C，很明显第一个room指房间，可数，第二个room指空间，不可数但是，我觉得A是对的，我的理由是：room...

问题 不定式可以用作非限制性定语

the human body was a temple, to be kept as strong and beautiful and clean as possible, whatever one might enshrine there.肉体才是人的神殿。不管在那里祭祀什么,它都应该更强...

问题 不定式做定语还是目的状语

The data entered must pass these rules to be considered valid.老师说这不是不定式做定语的理由是1. to be considered valid表达的是将被认为是有效的。（目前还未发生）2. 并且说被动不定式作定语，与被修饰名词只有一种逻辑关系：被动的主谓关...

问题 as在句首是什么结构?会引起be动词(were)倒装吗

The four novels that were published during her lifetime appeared anonymously, as were those of many early women writers.

问题 with/to/for 作“对于..”时，有什么不同？

He's a bit short for a basketball player.To him it's really a great blow.With those who don't hope to make any progress,it's the same.这三个例句的with/to/for... 都是“对于..”的意思，它们有什么区别？可以互换使用吗？？