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问题 为什么微生物不用冠词（microorganism）而放线菌用冠词（the actinomycetes

...the actinomycetes, produce a variety of antibiotics.As a result, they have been studied very extensively, especially by industrial research laboratories. (A Course in Basic Scientific English, P107)微生物，特别是放线菌，产生多种抗生素。 因而受到广泛的研究，尤其是在...

问题 句中的 born to 可以换成 born in 吗

... 1322) highlights the suspicion that women practicing medicine faced. Born to a Jewish family in Florence, she moved to Paris where she worked as a physician and performed surgery. In 1322 she was tried for practicing unlawfully. In spite of the court hearing testimonials (证明) of her ability as ...

问题 Where have you been? 用什么时态来回答

Where have you been? 究竟该用什么时态来回答？

问题 done和having been done的区别

请教专家 They sat in the room with the curtains drawn. 这里的 drawn 可以是 having been drwan 吗？为什么？

问题 这里为什么用have been missing而不用别的

We don't know what we've got until we lose it,but it's also true that we don't know what we've been missing until it arrives.为什么用 have been missing，不能用别的？谢谢！

问题 in+时间段和for+时间段有时候可以互换吗

The fruit ripened for four week.The fruit ripened in four weeks.He cleaned the house for two hours. He cleaned the house in two hours. 剑桥英语认为这两组句子表达的意思是一样的，只是for表示“BOUNDING”.in表示“UNDING”

问题 be on point of与be to the point of的用法

The coach was ______ giving up the game when our team scored two points.A.to B.on the point ofC.on point ofD.to the point of答案是B，可我觉得是D。不应该是was to吗？

问题 2012考博上海交大考博选词填空

...词填空题干：Choose one appropriate word from the following word bank to fill in the blanks numbered from 1 to 15 in the passage below. Change the word form where necessary. Remember the bank contains some extra words that may not be used in filling any of the blanks. Write the words in their c...

问题 be less of 的理解

Even if a job's starting salary seems too small to satisfy an emerging adult’s need for rapid content, the transition from school to work can be less of a setback if the start-up adult is ready for the move.请问此句中的 be less of 应该如何理解？the move 又应该如何理解？谢...

问题 这句话中的that从句是否为定语从句

...German impression of an inferior enemy that did not realize it had already been defeated. 这里粗体的第二句话，某出版社的翻译是：“这种表现让德军有了对手不堪一击的印象，却完全没有意识到自己实际上已经被击败了。”这里的第二句话中的th...

问题 having benn+adj和have been+noun可以用于独立主格吗

我想问下having benn+adj和have been+noun可以用于独立主格吗？我们知道having been done和having done可以用于独立主格。谢谢老师了！

问题 这个非限制性定语从句充当什么成分

Li Ming, who is in the room, wants to ask you some question.老师，这句话我有几个问题要问。我先问第一个问题：非限制性定语从句 who is in the room 在句子中充当什么成分？

问题 完成时态用法（He have been there​如何理解）

He have been there.是表示“他去过那里”还是“他一直在那里”？谢谢！

问题 should have been doing表达什么含义

...情态动词对过去的评价，译为“本应该”。那么should have been doing是情态动词对过去正在进行的事情的评价吗？，要译为“本应该正在做某事”吗？例：You know,it turns out all this time in training,we should’ve been robbing banks.这句话为什么...

问题 翻译：金钻国家拓宽了视野，使其成为国际政治舞台上的政治力量。

BRICS has broadened horizons, which makes it an important force on the international political stage.这句翻译的对吗？如果对的话，which这句是定从？另外，为什么BRICS前不加the,后面用单数？