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问题 过去完成时用法

They wore T-shirts with site logo on it to school and soon hundreds of their schoolmates had registered.请问这句话中，后面为什么不用一般过去时， 而用过去完成时的原因是？     

问题 时态的一致性问题

I said it was a secret but she’s told dozens of people.请问这个句子对吗？并列句前面是一般过去时，后面却用的是现在完成时？

问题 “现在进行时”和“被动语态”从本质上说是不是就是主系表结构

...不知道这种思路去理解，正不正确？如果按照这个思路，is+过去分词，该怎么理解？

问题 do well in 还是do well on

  平时我们常见 do well in, 可是最近看到这么一句话： He did really well on the last English test. 这里用的是介词 on, 为什么不用 in？有什么不同吗？盼望专家老师解惑。

问题 如果理解不定式用作结果状语

...ain. 他努力地用功了，结果还是失败了。 He hurried to the house only to find that it was empty. 他急忙赶到那所房子，却发现空无一人。 但除此之外，我发现用不定式表结果的可能性很小。能请各位专家老师帮我整理一下吗？非...

问题 in case与in cases的用法区别

...高中学业水平考试英语试题的“信息摘录”题：People from the West like to use these words in cases where some people in Asia may not think it necessary.句中为什么用的是 in cases 呢？但在词典上只能查到 in case 这样短语，而没有 in cases 这样的短语啊...

问题 endangered animals与endangering animals的正误辨析

...endangering animals 吗？Endangered animals, such as pandas, also live in the valley.我的理解是：过去分词表示完成吧！这里的 endangered animals 是指频临灭绝的动物吧，说明是即将灭绝的动物，或是正在灭绝的动物，对不对？这就应该用现在分词...

问题 Based on recent reasearches是独立成分还是状语从句的省略

Based on recent researches, distance learning slowly proves as valuable as the traditional campus-based form.该句中 based on 这里是独立成分吗？还是状语从句的省略？如果是状语从句的省略？如何还原？

问题 compared with...是什么句子成分

The ruling Communist party's policy allowing all couples to have two children came into force in 2016, leading to a 1.3m increase in births that year compared with 2015.译文：执政的共产党允许所有夫妇生育两个孩子的政策在2016年生效，导致该年出生人数比2015年...

问题 比较句中的would otherwise have been expected语法结构

英文：Researchers calculated that there were 1,800 more suicides than would otherwise have been expected in the next four months问：这里的would otherwise have been expected的语法结构怎么理解，谢谢！

问题 but和however可以用在同一个句子中吗

They can appear as a red tide in the daytime but when disturbed at night, however, they glow bright blue.这个句子既出现了but，也出现了however。它们可以同时出现在同一个句子中吗？请老师解答一下，谢谢！

问题 虚拟语气在名词性从句中的使用?

...里？该怎么理解？如：    I suggested that we should go the next day.另外，为什么不管主句是什么时态从句中均使用should+动词原型，是因为这个名词性从句(往往是建议、愿望、命令等)在提出来的时候都是对应当时的未来，所以不...

问题 主句是过去时 宾语从句为什么不用过去完成时

...，从句的时态要后退，下面的句子 我不能理解：I checked the orders instantly. That’s when we realized we made a mistake.犯错误这个动作发生在 realized 之前，为什么不用过去完成时？我了解主句是said，told 那种，但是像 realized 这种，如何...

问题 deliver sb sth - 有这种双宾结构用法吗？

CNN 10 《The Year In Review》A presidential election with a conclusion, they delivered us a clear victory.这里的with a conclusion什么用法和意思？还有， delivered us a clear victory. 这是什么意思？ 这里deliver sb sth - 这是双宾结构，但词典似乎没找到。

问题 be在句中用法

Working this way, there are times when I have to freely admit to people that our products may not be best suited to their particular needs, but to the honest I’d much prefer to be doing that than using some hard-sell technique to push something I don’t really believe in myself, you know...I’d ...