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问题 ever witnessed的ever含义

The world is going through the biggest wave of mergers and acquisitions ever witnessed.请问老师，这里的副词ever表示的是什么意思？

问题 为什么用过去完成时

Last month, Germany’s constitutional court paused ratification of the debt plan until the court had examined it. 审查应该是在暂停后，为什么用过去完成时呢？谢谢老师！

问题 following的介词用法

This starts off following a gentle river valley but the last part is quite exposed so the snow conditions can be challenging. following 作介词时候常表示在（某事）以后，但此following后跟地点，请问这个following在此是否表示在某地点之后。

问题 英语复杂长句that从句分析

Shares in Allergan, a pharmaceutical firm with headquarters in Dublin, fell by 15% in response to suspicion that tax-avoidance legislation would scupper its planned $160 billion merger with Pfizer, an American drugmaker. 请问：that 引导的是什么从句？

问题 为什么是选 Spanish

You should polish up your _______ before you go to Chile.A. Chinese    B. Japanese    C. Russian     D. Spanish答案是D，为什么是选 Spanish 呢？

问题 more of a taboo是什么用法？

There seems to be more of a taboo about taking about money than about death.可以换成more than吗？

问题 情态动词can,should

Sometimes I am not as brave as I ___ be. So I'd rather keep silent to avoid hurting myself.A should  B may  C can  D must专家老师，我觉得这里至少AC（should,can ）都可以，您怎么看这道题呢？

问题 翻译：走到了不知什么地方

老师好：跑了不知多少次，张培基有:after making you don't know how many visits那么走到了不知什么地方可以说成：go to i don't know what a place，这里用what还是where呢？还有就是请问翻译考试用这个格式合适吗？

问题 过去分词作宾补的疑问

I saw a dog killed.I can't wait to see it finished.I'll get it done.过去分词作定语时表示在主句谓语发生时已完成，而过去分词作宾补时，动作是在主句谓语前完成还是之后完成要看句子的意思，请教老师这样理解对吗？

问题 I for one try怎么理解

I for one try not to miss a single weekly meeting of my knitting group.这个I for one try是怎么去理解，我不太明白。

问题 这里的形容词为什么放在冠词前

Inflation is not certain to return after covid-19. But its re-emergence seems less fantastic a possibility.

问题 不定式和动名词短语的区分

I find it difficult to get along with/getting along with government officials.这里it作形式宾语，后面用不定式还是动名词比较好？还是两个都可以？

问题 时间状语可以放动词后面吗

Gay rights activist Larry Kramer has long speculated that Lincoln was gay, claiming in 1999 that he'd discovered Lincoln's love letters to onetime roommate Joshua Speed这个为什么时间状语放到了claim后面，为什么that不是修饰1999，而是宾语从句?

问题 动词的时态

...”和“过去时”两种，我们经常说的“will+动原，be going to+动原”这些是表示将来的手段，不算是将来时？2.章教授认为动词的体也只有“进行体”和“完成体”，那么时和体结合起来就是我们说的时态吧？（为啥不说时体呢？...

问题 in and of itself

In itself，it‘s not a difficult problem to solve，这里in itself明显是状语，但在Science communication is a science in and of itself句子中in and of itself还是状语还是定语？这里of是什么意思？