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问题 over加时间段

Tom has been working in the library every night over the last three months.这里的over是介词在…期间的意思吗？那这个词还可以换成什么介词表示在…时间段内呢？

问题 请教：a surface of which one end or side is at a higher level than another

a surface of which one end or side is at a higher level than another; a rising or falling surface这是关于词典Oxford dictionary of English 2nd 关于名词 slope的定义。我看不懂的地方在of which 这里，以我浅显的语法能力判断 of which应该相当于 whose做连接词引...

问题 句子成分

I have realized some local customs different from those of my hometown. 请问老师这个句子对吗?怎样划分成分呢？ local customs 后面需要加什么吗?谢谢老师

问题 短语动词的理解(字面意义短语动词与成语性短语动词)

...来的短语动词，占短语动词的大部分。 以take up为例： The manager took up the telephone receiver and rang up the Ministry of Foreign Trade. (拿起，字面意义） What is your brother taking up in college?（学，成语意义） 这是否说明原来的定义不是很完善...

问题 这句英文新闻是什么意思？

It emerged Saturday that two of the names on the flight manifest matched stolen European passports. 这句话百思不得其解，请教各位老师帮忙分析翻译，谢谢！！！

问题 请问there is作什么成分?

The Nobel Prize is the highest scientific prize there is, so we should be very proud of that.

问题 表示在某楼层用什么介词

The young college students occupy an office _______ the 20th floor. 填什么介词？in还是on？

问题 情态动词推测

 Once there was a boy who found a penguin at his door.The penguin looked sad and the boy thought it ___ be lost. 参考答案给的是may, 我觉得不合适. 我觉得应该是might have been lost,盼望专家老师给予我权威的解析及判定。谢谢您。

问题 mid-2000s的准确理解

druing the mid-2000s/ in the mid-2000smid-2000s指的是21世纪中期，还是21世纪第一个十年的中期？

问题 数词与最高级的位置先后问题

请问老师，The 3 fastest men alive 还是 the fastest 3 men alive，哪一个是正确的？

问题 单数名词后加复数谓语的形式

The sensitivity analysis of the simulated soil temperatures were accomplished by changing radiation这里可以用were吗？这是我读论文看见的，觉得是错的，请老师指点

问题 介词短语作定语还是地点状语

it's an extra seat around the coffee table.请教下，此处的介词短语around the coffee table是理解为定语，还是理解为地点状语更合适些？谢谢老师

问题 对非限制性定语从句的理解

老师，The river,which is polluted,和The river is polluted.在意思方面有什么区别？

问题 分词作定语位置问题

The smiling boy needs a pen bought by his mother.该句的smiling是现在分词作前置定语修饰boy，bought by his mother是过去分词短语作后置定语修饰the pen。请问老师，分词作定语一般是前置还是后置？还是都可以？

问题 one of的使用

The country’s young space program is rapidly becoming one of the world’s most advanced.请问老师advanced后面是不是省略了program, one of后面可以直接接形容词吗？