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问题 现在进行时与完成进行时的区分

Now the researchers are exploring methods to protect Hongyacha in its natural habitat while further studies are carried out.这里填have been exploring 是不是更好呢，强调持续在探索？求老师指点。

问题 those whose farms he burnt怎么理解

Despite the protection money he offered to those whose farms he burnt...whose farms he burnt 这段话怎么理解? 先行词those是从句中的哪个位置?

问题 one和a（an）的用法区别

老师好，请问一下：While there are many positive developments associated with the Internet, there are also certain fears and concerns. One concern relates to...此处的one不能用a的原因是什么？是one区别于a的什么用法？

问题 请教老师一句英文表达

刚才，我在国家地理文章中看到一句话，While the giant reptiles have disappeared， rainforests continue to thrive growing on every continent except Antarctic。对于单词thrive用法我查了一下字典，词性是不及物动词，用法如baby thrive或he thrives on hard work，...

问题 从句类型判断

...s are related to performance at work.A. which    B. where     C. whether     D. what答案是B.  如果不给选项，这题可以看成是同位语从句吗？谢谢。2. Have you ever been in a situation where you know the other person is right yet you cannot agree with him? 请问定...

问题 any longer用在肯定句是指什么

When he died, however, his brothers found it impossible to keep the secret any longer.   any longer 不都是用在否定句吗？这里的是什么用法？

问题 这个句子有语法错误吗

句子如下：What the adviser talked about maintaining reasonable expectations when studying abroad was quite helpful to May.我分析的是：what引导主语从句，在主语从句中作talked about的宾语，但是maintaining reasonable expectations when studying abroad这个名词短语作...

问题 现在完成时的问题

...怎么理解呢：He showed no interest in it, and his refusal has knocked the bottom out of our plan.  (这个句子knock是非持续非终结动词吗？)It has rained for 2 hours.(这个句子rain是持续性非终结动词吗？)这两个句子对吗，如果错了错在哪呢：It has rained.H...

问题 He is to give up drinking.——这是不定式作表语吗？

...），非谓语动词部分，讲解“动词不定式作表语”：He is to give up drinking. 请问：这是动词不定式作表语吗？如果是的话，那么，下句中的不定式是什么？His aim is to give up drinking.

问题 before后面可以接过去分词吗

The cars are tested for defects before they are sold. 假若要把时间状语从句 before they are sold 改为短语，可以是 before sold 吗？即省略从句的主语（因为它与主句主语相同）和动词are。但老师说给出的答案是 before being sold。请问如果写成 b...

问题 关于关系代词和定语从句的疑惑

书上讲关系代词时，举了如下一个例：She came back for the pencilbox which she had forgotten. (which 指物，在限定性定语从句中作宾主，可以省略)以上是书上原话，我的疑惑是什么叫宾主？作宾语但是用主格形式吗？ 这里 which 作的从句宾...

问题 现在完成式的表意理解

...?还是说即可能结束也可能持续下去? 如例句:He has worked in the company for 20 years.这句是表示他已经工作20年，但以后不工作了，还是工作到现在还会一直工作下去?

问题 作保留宾语的关系代词是否可以省略

But surely the strategies you were taught for dealing with that vocabulary were helpful.这是师生对话材料里的一句话。各位老师，如果是书面语体，作保留宾语的关系代词是否可以省略？我查了下资料，没见到具体说法。

问题 take one's time to do sth 法分析

老师请看例句，Take your time to respond 在这句话中不定式是否做状语？辛苦老师指点。

问题 over a long distance与from a long distance的区别

...词 over 能否换成 from, in 等之类的介词？Do not go swimming in the ocean if you have a fresh wound. Sharks can smell blood over a long distance. 如果你有刚受伤的伤口，不要在海洋中游泳。鲨鱼在很远处便能嗅到血腥味。句子来源：高中英语译林版（牛...