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问题 现在分词的完成被动式与不定式的完成被动式

Some Martian rock structures look strikingly like structures on Earth that are known ______ by microbes.A. having been createdC. to have been createdC是正确答案，可是A和C都可以表示非谓语的动作先于谓语动词的动作，为什么不能选A?

问题 英语长难句的修饰关系如何判断（具体方法）

...emed to be a large movement of chimpanzees into one great open room in the forest, relatively clear except for columns of nut trees.请问如何判断：(1) into to one great open room 是作前面动词 followed 状语，还是作前面名词 movement 定语？(2) 结尾 relatively clear 是修饰...

问题 more of a danger（为什么要加of）

German's post-war pacifism was once comforting to its neighbours and to Germans themselves. Yet, with the passing of the generations, attitudes have shifted. Sensible Europeans long ago stopped seeing Germany as a threat. On the contrary, the passivity of its foreign policy has in recent years posed...

问题 关于比较级省略的疑惑

空格处填for是不是省略了比较内容并且和前面的for引导的介词短语保持一致:For college educated workers over age 25, unemployment is indeed lower than (  ) other groups.

问题 特朗普发在推特上的一句话的解释(涉及that的指代)

... We will be meeting tomorrow to determine the results, but it is hard for China in that they have become very spoiled with U.S. trade wins!第二句话中 but it is hard for China in that，这个 that 一直没搞明白到底指代什么？如果后面跟的是定语从句，那么 that 前是...

问题 although可以换成but吗

I'm very glad that Jack is beginning to learn Chinese just like many other foreigns abroad, although I know it may be an enjoyable challenge for him.请问：句中的 although 可以换成 but 吗？

问题 分析长句子

... exhibition of the museum, introducing local people's lasting struggle for national independence from the Opium War in 1840 to the national liberation in 1949, with the First Civil Revolutionary War as the focus of the introduction.这句话里现在分词作状语，介词with这个句子又是...

问题 sorrowing 是现在分词作作伴随状语吗？

They sank down sorrowing, without waiting for it to come in words. 上面：sink down sorrowing - 这里down是副词，sorrowing 是现在分词作作伴随状语吗？

问题 what’s-the-point of ...连字符

Mr Trump’s frequent onslaughts — the Europeans are not paying a fair share, Germany is in thrall to Moscow and what’s-the-point of the alliance anyway — have raised questions about Nato’s future.请问老师，what’s-the-point 中连字符有什么作用？

问题 scrutiny of sb/sth 结构理解疑惑？

1）Managers are subject to the scrutiny of specialists.经理们会受到专家的严格审查。2）He resumed his scrutiny of the chessboard.他又开始仔细看棋盘。以上2个句子，句1）是scrutiny of sb结构，却要理解成sb主语，把scrutiny理解成类似谓语。而句2）是...

问题 为什么come这个动词可以用作现在完成进行时？

I've been coming to Fort Defiance for about five years.It was one of the places that when I first was considering moving to Red Hook.注：Fort Definace 是一家餐馆；Red Hook是一个地名。1）为什么come这个动词可以用作现在完成进行时？ come是短暂动词，用作现...

问题 虚拟语气中主句与从句时态的一致性问题

If there were as many girls as there are boys at the party, the situation would be quite different. 请问这是虚拟语气吧？为什么 if 从句中一个用的是 there were，后面一个用的是 there are 呢？

问题 among和of在表示“在...之中”时的区别

among 和 of 在表示“在...之中”时的区别。例如：" While you are the youngest, you are indeed the cleverest of / among my sons," the old merchant said. 那么两者在这个句子中可否互换呢，用在句子开头，又是什么区别呢？

问题 介词可以放在特殊疑问句的句首吗

介词可以放在特殊疑问句的句首吗？比如：Who did you speak with? Where did this wine come from?What are you complaining about?以上句子可以写成下面这样的吗？With whom did you speak? From where did this wine come?Aabout what are you complaining?

问题 关于句尾介词短语前出现的破折号之用法

...ssary adjustments will not take place while the state pays workers to wait for their old jobs to return—often on better money than they got before.