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问题 如何区分及物动词和非及物动词

曹老师，我十分想弄明白如何区别一个单词是及物动词还是非及物动词！您能否好告诉我一个很好的判别方式？谢谢！！！

问题 did指代问题

Archaeologists have yet to reach Valeriana on foot, as another team led by the archaeologist Ivan Šprajc did last year with the city discovered last year, called Ocomtún.这句话的did last这个did到底指代什么？步行抵达了那个地方吗？

问题 介词短语修饰问题

The BBC separately quoted senior sources as saying GM and TWG will pay an anti-dilution fee, split between the 10 existing teams, of $450m to secure the entry.这句话的of$450m，和split都是修饰这个fee吧？两个分开了。

问题 宾语后置问题

"Young people are entering this holiday season already in the red," she said. "And, based on what we're seeing in the data, they're continuing to bury their heads in the sand and spend.这句话的in the red是不是后置了？这是什么用法？

问题 until后可接介词短语吗

在我的印象中，from后可接介词语，如说from under the bed, from behind the door等。但英语可在until后接介词短语吗？请举例说明。

问题 句子that是什么成分？

After endless mountains and rivers that leave doubt whether there is a path out,suddenly one encounters the shade of a willow,bright flowers and a lovely village 其中的 that 充当什么成分？

问题 是不是省略句？

Industrial production fell by2.8％ in the year to March,the worst slide since the Second World War.感觉逗号后的句子不完整，The worst前是不是省略了which has been?请详解。

问题 句子结构分析

...译不出来呢，希望老师分析下结构，并能翻一下look like 的用法 是 动词短语么？ 为什么后面没有加成分呢？

问题 have been appreciated如何理解

Some manifestation of your concern would have been appreciated.【你当时要是表现出一些关心就好了。】请问这个句子的 have been appreciated 应该如何理解？谢谢老师！

问题 “从……掉下”用fall还是fall from

One cat, Sabrina, fell 32 storeys.这里的fell后面不应该加个from吗？

问题 句型分析 what of...

句子里的what of以及后面的句子搞不清楚是什么？There are many forms of advertising .We first think of product advertising,but what of corporate sponsorship or indirect advertising through product placement?

问题 as用法疑问

In the harsh words of Asit Biswas："The problem is bad management."Or, as a report puts it in an different context:"We all know what to do,but……" 请问老师，这个句子里as的用法和:As expected,……一样吗？句子里为什么要加it？

问题 句子成分

...pany, the first to reach a covet.我想知道"Little did he know"的成分。里是个插入语么？还是接在后面“Little did he know that Apple…………”谢谢老师。

问题 为什么加一个be

老师你好！He seems happy.=He seems to be happy. 老师我困惑的是为什么在to 后面要加一个be.我经常碰到这种句型，就是我自己不能理解。老师能解释下吗？谢谢。

问题 句子分析

...个that是什么用法哇～（我个人认为是that同位语解释前面的putting yourself on display) 以及能不能翻译一下句子呢～)