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问题 there be句式的否定式构成疑问

请教一下there be 句式的否定式如何构成。比如：(1) There aren't books on the desk.(2) There aren't any books on the desk.(3) There are no books on the desk.后面两句肯定是对的，但第(1)就算错吗？有这样的依据吗？谢谢！

问题 表语前置时系动词是否只能是 be 吗

表语前置中的系动词只能是be吗？Very important in the peasants' life is the TV weather report.如果系动词是look, seem，appear, become等是否可以表语前置？比如下面的句子是否正确：Beautiful looks/seems the girl in red.

问题 thus在句子中的具体意思

Although the process of professionalisation and specialization was already well under way in British geology during the nineteenth century, its full consequences were thus delayed until the twentieth century.虽然职业化和专业化的过程在19世纪的英国地质学界中已经形成，但是...

问题 短语动词为何没有 keep back someone

...词条下只能把someone 放中间，不知道这是和何道理，That's the reason which keeps the man back为何不可以说keep back the man? 此词条意思阻止某人成功。下面的截图出自collins phrasel verbs dictionary：

问题 请问在这里过去分词表示的体的意义

句子：The redefinition is a task uniquely performed by the young.以下为学生个人判断：performed by the young，过去分词短语做后置定语修饰a task。perform为终结性延续动词，过去分词表示被动语态，且动作已完成。但是套入句子中翻译却感到奇...

问题 otherwise 引导的句子用虚拟语气有何规律

otherwise 有时引导虚拟语气，有时不引导虚拟语气，请问这有什么规律？如：We must be back before midnight; otherwise we’ll be locked out. 我们必须在午夜之前赶回去，否则我们就会被锁在门外。（没有虚拟语气）We must be early; otherwise we won...

问题 过去分词短语成分分析

to see an impossibly tiny runway appear perched on a cliff上文过去分词短语做什么句子成分，请老师适当讲解一下，谢谢。

问题 非谓语动词的成分

Young adults have a tough time finding peers这里的finding peers 为什么 是用ing不是用to find 呢谢谢解答

问题 register用法

A company may leverage owned media by sending sales to customers registered with its Web site.请问老师，registered是不是一个形容词？with its Web site的介词with如何理解？

问题 as表示同级比较概念的用法问题(as...as结构的语序问题)

This is not            they had exprcted after years of painstaking research.A.a result as bad as   B.as a result as badC.as bad as a result   D.as bad a result as 老师这道题选D，同级比较的概念，为什么C不可以呢？

问题 关于定语从句的选择题

1. He is the only student______ understands English well.A. who         B. that        C. who / that2. That is the horse______won the race.A.which       B.that         C. which / that请问老师1，2两题分别选什么并...

问题 文章名称中的定冠词的首字母是否要大写

《独立宣言》the Declaration of Independence 这里的the需不需要大写，一般虚词是不大写的原则，网上the首字母大小写都有，有点疑惑请老师解答!

问题 people such as 用法疑问

Savvier observers guard against the "we are overworking the kids" alarm, people such as Mathews, education reporter, who called Robbin's book a "spreading delusion," and Tom Loveless of the Brookings Institution, whose 2003 report said of " homework is destroying childhood" argument, "Almost everyth...

问题 判断that主语从句的用法对不对

The phase transitions between water and ice cause the destruction of soil skeleton. That destruction lead increases in the diameter of soil particles decreases in their specific surface area. 水与冰的相变导致了土壤骨架的破坏。那个破坏使土壤颗粒直径增大，比...

问题 表示“见证了……”，句中的物可以做主语吗

...语表示见证了……的发展，但是物可以做主语吗？例如，The 1990s' saw the great achievement in economy.是否可换成 Economy saw  the great achievement in 1990s'.应该是不可以的吧，但不太确定，请老师们指教。此外，能否再举几个和see表示见证，...