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问题 事件不可自由运用于一般现在时

...外，在科技论文中，也大量用了一般现在时，人家审稿人和编辑也没说错。这又是什么道理呢。里面的原因，我是朦朦胧胧，不是很清晰。今天在此请教老师，请给个清晰明了的答案。谢谢。

问题 一般过去时与现在现在完成时的比较区别

---The car crash hasn't brought any traffic inconvenience,has it?   --Yes. The road _____ up with several miles of vehicles within a few minutes.A. was chocked   B.has been chocked  C.had been chocked   D.is  chocked.  排除C，D。A和B区别在哪，答案是A.

问题 这里的as 有什么意义（可否省略）

The interspaces are wider in the back as compared to the front.背部比前面的肋间隙更宽这里的as 有什么意义, 可否刪除?

问题 never的位置

 When she was that little girl in Pennsylvania,Rachel Carson never would have believed that years later she would write a scientific book that would stir up so much controversy. never的位置可以在情态动词前吗？这样是强调的用法吗？ 在情态动词后是不是也可以...

问题 名词单复数的用法疑问

为什么第一个 cell 用了复数，第二个 cell 却用了单数？A further reason is to obtain a supply of stem cells which can develop into every other type of cell in the body.

问题 place的复数形式怎么用

请问一下。The plants are growing everywhere......Although we allow tomato plants to grow in the some place year after year.句中为什么不用places为复数形式呢？前面不是说everywhere吗？还望老师帮忙，谢谢了！

问题 They are Chinese made.用法

The cars in Beijing may carry foreign badges, but they are Chinese made.老师好，这里的加的Chinese很迷呀，怎么理解呢…（难不成作adv...）

问题 英语中破折号后面能跟定语从句吗

例如，破折号后面跟 in which 引导的定语从句。

问题 for just words是什么意思

I want speak to my Chinese friends in Chinese for just words.下面句子中的just words是什么意思？just这种用法给几个例子。

问题 为何用component而不用portion

The employment of psychometric or ability testing as one (     ) of the recuitment process may have some merit, but in reality there is no real measure......

问题 to do做表语

尊敬的老师，有这样一句话: 背景:In the past 6 months he has made 5 trips. There were to Asia and two were to Europe.从背景可以看出这些trips已经做过了，为什么下面是 to Asia,不定式不是表示还未做吗？

问题 怎么理解这句话？

President Trump thus interposed the powers of the Presidency against the lawful subpoenas of the House of Representatives, and assumed functions and judgments necessary to the exercise of the “sole Power of Impeachment” vested by the Constitution in the House of Representatives.

问题 to作为介词做状语

Irresponsible financial regulation in the US has a good claim to being the main cause of the crisis.对于这句话我的翻译是:对于这场危机的主要原因，不负责任的美国财政管理有一个很好的说明。我翻译的一定不对，希望可以得到指点，谢谢！

问题 被动语态的用法

...这样的 The brave man saved a girl out of a fire and the news was spread in the city quickly.这里spread用了被动语态，这是为什么呢？也是表示传播

问题 threaten to的用法

forced displacement of people threaten to reverse much of the development progress made in recent decades.被迫流离失所的人民有可能使近几十年来取得的许多发展进展倒退1. forced displacement of people2. threaten to对这两点不理解。请老师指教。