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问题 现在分词作原因状语的问题

...状语，多用完成体。现在分词作原因状语，相当于because, since, as等引导的原因状语从句。原因通常早于结果，故现在分词多用完成式，但对于静态动词，如感知、认知动词know, see, realise, find, think等以及be 动词，多用一般式。 Livi...

问题 for表原因是并列连词吗

...e it. 专家老师：这里的for表原因，是并列连词吗？可以和since/as换用吗？另外，不解之处是of all time 这里表示有史以来，到现在为止，为啥不用现在完成时呢？

问题 倒装句中的谓语动词的单复数使用疑惑？

To such thermometers are attributed the accuracy of much of the work done in low-temperature physics since 1951.主语是the accuracy of much of the work done， 这里为什么谓语用are ? 能否举一些例子说明，谢谢！

问题 向曹荣禄老师请教：关于终结性动词完成式与持续时间状语连用

...动词既可以为终结性动词又可以为非终结动词，现在完成时态时加持续时间状语等于现在完成进行时态，表示从过去到现在持续到现在的动作。那么按照这个理解，I have lived in Beijing for 15 years应该用非终结动词解释，但是又与我...

问题 关于过去完成时的问题

...said之前的事，完全符合过去的过去啊。而且宾语从句中时态要注意的问题就是如果主句用过去时的话，从句要用相应的过去时态，如果从句动作发生在主句之前，那么从句就要用过去完成时，完全符合，那么为什么这里填began呢...

问题 托福听力句子理解

...的句子如何理解？There's been a lot of work on these machines since then.And these problems have been solved by and large.That's not to say the technology is perfect, it would be nice for example, to have a system that didn't take 6 months to produce an image.I suppose that's ...

问题 supply-cuts是名词吗

Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $26 a barrel, up from less than $10 last December.自从3月份石油输出国组织（OPEC）决定减少原油供应后，原油价格便从去年12月不到10美元一桶跃升到近26美元一桶。请问句...

问题 句中的latter是否使用不当

Since the commander of the supply company was also deputy battalion commander, the new organization enabled the latter to focus exclusively on combat duties, while the former took exclusive care of any logistical and administrative needs.各位老师好，请问句子中的latter是否使用得当...

问题 划分句子成分

请划分一下上面这个句子的成分以及所使用的语态和时态等。

问题 关于定语从句和状语从句的语法填空

...   B as     C while    D since为什么选 A? 而不选其他的？为什么 B，C 错了呢？把 the sun is shining 当做时间状语不行吗？选 C 把 the sun is shining 当做原因状语不行吗？

问题 in the present 和 at present 辨析

Answer D is definitely the right answer. A is nearly correct too, but since we're talking in the present, D is the best choice.句中in the present是当前，现在的意思， 有这种用法吗？词典上只有at present词组，我从没见过in the present.请分析一下二者使用上有...

问题 关于一个单词then的奇怪用法

...章，文章中有一句是这样的：It is nearly half a  century since biologists first asked Congress to re-introduce wolves into Yellowstone, so that they might usefully eat some of the elk then lumbering about in over-large herds.翻译是这样的：近半个世纪前，生物学家第...

问题 more than you can help是什么意思

...面的句子摘自2013课标卷I：Try not to cough more than you can help since it may cause problems to your lungs. 尽量少咳嗽，因为咳嗽可能导致你的肺部出问题。请问句子是什么意思？尤其是more than you can help是什么意思？全句是指尽量多咳嗽还是尽...

问题 动词mark的含义理解？

...rk as a business. But there's one obstacle that's marked ice cream makers since the industry's earliest days. How do you sale the icy delight when it's cold outside ?Unilever thought that home delivery and marketing to the living room sofa was the way ahead.that's marked 是that has marked 还是t...

问题 retire from dancing 如何翻译

Ever since her childhood, Ginni, now 71, has had a deep love for travel. Throughout her career (职业) as a professional dancer, she toured in the UK, but always longed to explore further. When she retired from dancing and her sons eventually flew the nest, she decided it was time to take the plu...