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问题 介词for和of使用辨析？

VOA 《Americans May Get First Vaccines This weekend》On Thursday the US food and drug administration's advisory committee, endorsed emergency use authorization for the PfizerBiotech Covid 19 vaccine, after hearing a wide range of concerns.为什么不是authorization of the Pfizer...这里使用...

问题 several hundred of college students是合适的吗

老师好，       我在答疑网的http://www.yygrammar.com/Article/201411/3751.html 看到其中的several hundred of college students是合适的吗？我觉得加上of是不好的，除非后面是these college students。

问题 被动语态的问题

向老师请教下这个句子的理解：That ship was hit with a missile.1.这句话是过去时，如果理解为被动语态表动作，即“那艘船(当时)被导弹击中了”。但似乎也能理解为系表结构，可是该怎么翻译才能区别于被动语态的翻译呢，我感觉...

问题 have sb do和have sb doing区别

My body was ill,but I was busy with my work.So I had my mother ( ) it all the morning.这里应该用look after还是looking after?请说明理由。

问题 feel to be true与feel true

Readers tend to believe what they feels to be true.这是一篇英语作文里的一句话，请问这里是不定式做宾语修饰feel吗（用feels主谓不一致），如果是的话请问为什么不直接用feel true呢？

问题 主语为单三谓语动词为什么不加-s

He who play to win should never give up.请问这里的 play to win 中的 play 为啥没加 s 啊，是笔误还是说作者是将其看成play-to-win了呢?

问题 句子结构分析(涉及since和从句等)

Those who merely say "I've come far, I can't give up" will have some chance of succeeding, since they have the kind of the mindless doggedness and lack of sensible overall perspective that it takes.这个since能用as或者for, because代替吗，还有最后那个that it takes是什么作用啊，...

问题 something的指代问题

新牛津词典中对as的一个意思的解释used in comparisons to refer to the extent or degree of something中的something是指实际存在的物体还是抽象的概念？比如it tasted like grape juice but not as sweet.中我们认为something是指it和grape juice，还是认为something...

问题 Next to us lives Mr Wang该句句式问题

Next to us lives Mr Wang, who is a sweeper.该句是什么句式呢？如果按正常语序写，应该怎样写呢？

问题 running在本句中是分词做定语吗

Looking down on one side, I saw a petrolstation and a supermarket, and on the other side the remains of the ancient Byzantine city walls running down the hillside to the town and the ocean below.请教老师running在本句中是分词做定语吗？

问题 抽象名词表示泛指时为什么可以加不定冠词

Like all ecological systems, a forest is made up of a living environment and a nonliving environment.  请问各位老师 forest 和 living environment 这些都是抽象名词表示泛指，为什么前面要加不定冠词？可以去掉吗？

问题 分析：The dinner cost us twenty dollars a person.

The dinner cost us twenty dollars a person.此句中a person作什么成分？

问题 what, that在选择题中的区别

_____ the trainer wanted to tell is _____ Asian elephants are easier to tame than African ones.A. That, those   B. What, that   C. What, the     D. That, the为什么选 B 而不是选 C？

问题 带as句子的理解和翻译

Phone calls and donations have filled up the animal shelter, as have deliveries from warm-hearted folks, the IndyStar reported.老师早上好！我记得在使用as引导非限制性定语从句的时候，as的作用是用来指代主句所表达的整个意思。但阅读这个句子，我觉得a...

问题 后置定语是两个并列分词，之间必须要用连词连接吗

A blog is a discussion published on the World Wide Web consisting of discrete, often informal diary-style text entries.这个句子里面consisting of 也是修饰discussion的和published并列，它前面不用加and吗？