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问题 happens时态的选择

...天在查before时，看到朗文的词条解释:3. used to say that something happens after a period of time这里的happens 是因为表示习惯而使用了一般现在吗？类似在电影里听过的it happens.之后又查了一下happen，牛津▲ a. Let's see what happens next week.▲ b. ...

问题 amount of 后接复数名词时谓语动词的单复数

The amount of resources available in an area determine how many organisms can live there.请问老师：上面这个句子正确吗？amount of后面一般是不可数名词，不过有时候也有用可数名词复数，但是动词不是应该根据amount决定的吗？怎么这里使用了复数...

问题 until后的特殊省略

...主语一致，且从句谓语包含动词be, 那么可将从句的主语和动词be省略.如下：He is a man of few words, and seldom speaks until he is spoken to.省略后为：He is a man of few words, and seldom speaks until spoken to.http://www.yygrammar.com/Article/201203/2791.html 

问题 老师，一个动词的动名词，也一定可以当名词化的动名词吗？

...我还是不确定。还有您是怎么判定Seeing is believing 中Seeing和believing是动名词的，而Swimming is good for me中swimming是抽象名词？有什么判别方法吗？求求老师能回答我。

问题 请问这里的将neither nor结构翻译的像让步状语是什么现象？

...语上，这是一种语法现象还是翻译处理；还有类似的结构和情况吗？

问题 knowledge有形容词修饰时必须要用不定冠词吗

... 1. have a...knowledge of sth 是固定搭配吗？在类似这样的用法和搭配中是不是必须要用不定冠词？ He has a good knowledge of mathematics. 他的数学(知识)很好。 He has a wide knowledge of history. 他有广泛的历史知识。 It is necessary to have a good kn...

问题 用倒装表示假设的虚拟语气

...种用倒装表示假设的虚拟语气② no....no....nor   nor可以和no连用吗？

问题 The network must optimize more parameters than the

...）？我不是也可以认为than在从句中充当了bananas的形容词和副词吗？

问题 since从句的理解与时态难点

The library ______for more than 60 years since it _____ in 1940. A. has been open; opened B. has been opened; opened C. has opened; was open D. has been open; was open 正确答案为A。但 D 为何不可以呢？有资料说，当 since 引导的状语从句的谓语动词是延续性...

问题 难句分析(涉及which引导的定语从句的先行词等)

Companies often argue that their prices take into account research and development costs and that they practice tiered pricing, which allows poorer countries to pay less, subsidized by higher prices in wealthy countries.请问：(1) which 引导的定语从句的先行词是？(2) subsidized修饰...

问题 otherwise用法（an otherwise dry stream-bed）

In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface. 请问老师这句怎么理解，特别是 otherwise 在这句中是什么用法，非常感谢。

问题 It has changed who we are是什么意思

It has changed who we are and continues to fuel our optimism about how much the lives of the poorest people will improve in the years ahead. 问题：这两句如何翻译？尤其是It has changed who we are 如何翻译?

问题 “喜欢这里”一定要翻译成like it here吗

...，因为 here 是副词，不能作宾语。但是，我在书上见过 in here, from here 这样的用法，这里的 here 不是明显用作宾语吗？请专家老师进一步分析一下，谢谢！原问题见：http://ask.yygrammar.com/q-24233.html 

问题 动词时态选择题(涉及过去完成进行时等)

When I saw the mess my paper was in,it was obvious that someone             it.A.was reading   B.had read   C.had been reading   D.read请老师详细讲解这道题为什么选C项而不选其他项啊？谢谢老师啦

问题 decision后面的同位语从句可以省略that吗

(1) The decision (that) whether or not to salvage the wreck was not an easy one, although an excavation in 1978 had shown that it might be possible to raise the hull.(2) The hope that he may recover is faint.请问：是否可以认为 decision 后面省略了that？是同位语从句吗？