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问题 这是不是虚拟语气

You should have reported the matter to the police.  这是should+完成式，表示“本该做” 这时候是不是虚拟语气，本该做不就是实际上没做吗？ 如果不是虚拟语气的话，怎么该能成为虚拟语气呢？ 这块我很不清晰，...

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 英语难句分析

By 1970, according to a World Wildlife Fund report, only about 4500 tigers survived throughout the world-half of them in India.请问这里的throughout the world-half of them什么意思？作什么成分？

问题 be动词的时态问题

如题：Do you know who        （be）the first man to walk on the moon?在提问者不知道此人是否已经去世的情况下，用什么时态比较好呢？

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 been 的理解

I：And haven’t you got a healthy husband and happy children?L：You must be joking. There’s never been the time … or the inclination.想请教曹老师这段对话的第二段分词been，如可理解在句中的语法？

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 句子翻译问题

...呈胭脂红色，却是真正的绿色食品。” 将该句子翻译成"Therefore, it does not require fertilisers and pesticides during the growing process, and although the rice produced is carmine in colour, it is a truly green food."是否合适？

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 请问这里saw的用法

The first week of January saw him leave England and travel to Jamaica. The first week of March saw his return.请问这里的saw是什么用法呢？还有类似的句子吗？

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？