问题 as many students as it did last year.为什么是did而不是had

原句：The university has twice as many students as it did last year.为什么是it did last year而不是it had last year?

问题 putting on pace

...rely not only on a battery to deliver the necessary wattage, but also on a second source of power called a supercapacitor. 这里的putting on pace，看翻译是“加速”的意思，但我翻了词典并没有查到。另外，请麻烦说几个put on在考试中常用的意思

问题 such和so作代词的区别

By doing so (such), we may discover the benefits of simply watching a sunset.这句话中，so为什么不能换为such？such也可作代词，比如：We were second-class citizens and they treated us as such.

问题 He had failed to visit her as promised中从句如何补全

问题 改错：He had so obstinate characters that no one liked him.

问题 请问此处的I'd 是I had 还是would？还有就是like要用过去时啊

I just wish that once, I'd bring a guy home that they actually liked.请问此处的I'd 是I had 还是would？还有就是like要用过去时啊谢谢高手指点

问题 虚拟语气的时态问题Had the government and scientists not wor

...would not fall, 从句是对过去情况的虚拟倒装if the…scientists had not…,但主句用的是since+时间点，不应该是表示是从2015年到现在吗？有since的地方大都用用现在完成时，应该是指的是现在的情况，而对现在的虚拟应该是would +v，我以...

问题 ever表达否定

The air around him was the purest and freshest he had ever sensed.译文：他感到周围空气从未像这样纯净清新。 请教专家老师，1.第一种理解方式：“he had ever sensed”是“the purest and freshest”的定语？那如果是这样，那应该采用“he had never e...

问题 分词用法疑问（, and running...）

...s in the largest high definition standard, 4K, and running at 60 frames a second.最后and running让人摸不到头脑，running我觉得是deliver的伴随状语，可是为什么要用and连接？难道这是口语化？想到哪写到哪。。

问题 “when+现在分词”的省略

When referring to the moon specifically, a blue moon is the second of two full moons in a given month. 请问老师：When referring to the moon specifically省略了什么？能否还原为两种形式：1 When (a blue moon is) referring to the moon specifically2 When a blue moon refers to the moon...

问题 only 在句中不同位置的含义

...erdeen, a small town of 23,000 inhabitants in South Dakota. As the parents had five children, life was a perpetual struggle against poverty. They were expecting their sixth child and were faced with even more pressing economic problems. If they had only had one more child, the fact would have passed...

问题 More than 50 years可以用作主语吗

More than 50 years has passed since the end of the Second World War, but this is the greatest disaster in human history. More than 50 years可以用作主语吗？

问题 Its driver had a lot of trouble trying to stop it.

文章 还是那道1994年高考题：the first后接不定式被动式还是过去分词

...的动作, 且几乎全是系表结构的例子：He is (一般现在) the second man to be killed in this way. (the second man who was killed一般过去)He was (一般过去) the fifth person to be killed in sectarian violence. (the fifth person who was killed一般过去)Mr Knowles is (一般现...

问题 I've had it used against me这句话怎么翻译

... to twist the enemy's blade with the flat of your own sword so that he had no choice but to drop his weapon."This is difficult," he stressed. "I've had it used against me. No laughing at Percy, now. Most swordsmen have to work years to master this technique."黑体部分...