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问题 如何理解这里behind的词性？

我查了一下behind的词性有介词和副词两种，可是在这句话中说它是介词和副词好像都不合适，请帮助讲一下这里behind词性应当是什么？

问题 形式主语的问题

It is questionable whether this is a good way of solving the problem.这里是it做形式主语代替后面的whether从句吗？如果是的话，语法书上不是说除了that从句和不定式，其余都不能加it做形式主语吗？比如名词短语和what从句等。

问题 句子中状语分析

In some situations. the action of indigenous enzymes is essential to develop the final flavor and texture in products such as fruits and vegetables，tenderizing of meat, ripening of cheese, and conversion of starch into fermentable sugar.the action of indigenous enzymes is essential是主系表的...

问题 由and连接的并列结构后面跟随的介宾短语修饰谁

各位老师，原句是这样的：the sector was expecting a decline in growth，but the actual reduction in postgraduate numbers is of real concern as international-students make up the majority of numbers in many postgraduate courses and research teams in science，technology，engineering and m...

问题 为什么用 office hour 而不用 office hours

...湖南卷高考英语听力中有这样一句对话:W: No, I can see you at three o’clock this afternoon, or during my office hour on Tuesday or Thursday or Friday.M: Great. Your office hour is best. That’s two o’clock, right?请问：为什么是用 office hour 而不是 office hours 呢？...

问题 非限制性定语里的Sit where后面是省略了联系动词is吗

Interpersonal non-verbal signals include smiles, who sit where at a meeting, the size of an office, and how long someone keeps a visitor waiting.

问题 inviting / to invte(涉及句式write to sb doing/to do)

One day a middle-aged woman wrote to a doctor INVITING him to have dinner at her house.不能理解为什么填写INVITING, 而不是TO INVITE ?

问题 as has repeatedly been shown句子成分问题

People at Audi - as has repeatedly been shown over 100 very diverse years - are characterized by a spirit of individuality and are fond of coming up with original solutions.  中间插入语“as has repeatedly been shown over 100 very diverse years”如何分析句子成分？感觉没...

问题 主语是复数时后面的 than appears 为什么用单数动词（than从句省略主语）

《剑桥语法》p.1110 有这样一句：The difficulties are even greater than appears at first sight. 请问这里的appears 可以去掉s改用复数形式吗？

问题 which引导从句判别

Thus, an ongoing strategy of deterrence resulted in which it was perceived as necessary to maintain a large deployment of weapons in order to create the threat of retaliation for the enemy?resulted in后面的which引导什么从句?

问题 句子成分分析

By comparison, in 1992 this was more than the United States combined with all the countries of Latin America in trade.请问老师：1 more在这里是什么词性？2 combined with all the countries of Latin America in trade 是过去分词短语做后置定语修饰United States吗？

问题 考研长难句

But it's interesting to wonder if the images we see every week of stress-free, happiness-enhancing parenthood aren't in some small, subconscious way contributing to our own dissatisfactions with the actual experience, in the same way that a small part of us hoped getting "the Rachel&quo...

问题 关于比较状语从句与比较结构的区别

Television is one of the means by which these feelings are created and conveyed--and perhaps never before has it served so much to connect different peoples and nations as in the recent events in Europe.想问一下加粗部分是比较从句吗？可以补充为 as it did in the recent events in...

问题 外籍专家对非谓语否定结构的观点是否正确

...表达，即Many April Fool's jokes may end up being not very funny. 和Many April Fool's jokes may end up not being very funny.语法上都是正确的句子，但它们在语义上有些微区别。下面是一位美方专家的解释：The expression "not being very funny" could...

问题 while引导的时间状语从句的疑问

...e 表示的应该是表并且的连词，但是从句里的动词 avoiding 和 imposed，一开始我是分别理解成动名词与后面名词短语构成主语和过去分词修饰 market cycles and the growing burdens ，但是这样一来从句里就没有谓语动词了；所以其实avoiding...