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问题 什么时候助动词have的否定形式可以用not have ...

Those who failed to get in need not have felt disappointed as many of the artists who should have appeared did not come. (新概念英语2)请问老师们这里的not have…是什么用法? 与haven't有区别吗?

问题 这里为什么要用过去一般时态

There is going to be an element where we are not succeeding. It's bad enough not getting what we want, but it's even worse to have an idea of what it is you want and find out at the end of a journey that it isn't ,in fact ,what you wanted (就是这里) all along.前面一直都是用的现在一般...

问题 when非限制性定语从句修饰谁

The amount of goods transported by water was constant from 1974 to 1978, where it showed an exponential growth, rising to almost 60 million tonnes after which it plateaued for about 20 years before starting to rise gradually again.①where引导的非限制定语从句是作插入语吗？修饰的...

问题 这些to可以换作and的吗（向曹荣禄老师请教）

老师你好！以下to可以换作and的吗?I am happy to get your email.It is my dream to be a dictor.We have two nice nusic teachers to teach you.I rode a bike to go to the park.She always takes us out to draw.

问题 这些句子为什么要加 it

...began to speak.这里为何不能是whose turn was to tell a story.2. When they proceed from some cause which it is impossible for us to detect.这里为何不能是which is impossible  for us to detect?3. The tall man,whose plan it was to escape,disagreed with us.为何不能是 whose plan was to ...

问题 all three of these works为什么没有加定冠词

I really like all three of these works.本句摘自北师大高中英语必修第三册p24。请问 all three of these works为什么没有加定冠词？不是应该用 I really like all the three of these works 吗？ 

问题 《现代大学英语精读5》难句分析

下面的句子摘自《现代大学英语精读5》：From the very beginning I know I need some theory as guideline to help me in my study of global cultures as globalization, to guide me through such a variety of cultural phenomena. 关于这句话，我想请教专家以下的问题：1. theory...

问题 be friendly to sb 中的 to sb是什么成分

在 be friendly to sb 中 to sb 是形容词的补语吗？或也可以说是状语？那这是什么状语？ We have to forgo the tie with other teams of different faiths.  with other teams of different faiths 是做什么成分？

问题 高考英语时态选择题（一般过去时还是过去完成时）

We searched the whole area but all to no avail. Robbie ________. A. disappeared   B. had disappeared  C. was disappearing  D. has disappeared本题的 C 和 D 比较好排除。请问是选 A 还是 B？是用一般过去时还是过去完成时？谢谢！

问题 在具体考题中frightening与frightened的用法区别

The little child sounded ______. It’s ______ to think how easily children can be hurt.A. frightened; frightened       B. frightening; frightenedC. frightened; frightening      D. frightening; frightening答案为C。这里面前一句 frightened 怎么才能表...

问题 英语难句分析（涉及why从句分析以及省略等问题)

It is also the reason why when we try to describe music with words, all we can do is articulate our reactions to it, and not grasp music itself.请问：(1) why 引导的是什么从句？(2) why 可以换成 that 或省略吗？(3) is 和 articulate 之间为什么省略了 to？

问题 seen from this angle与seeing from this angle的区别

为什么这里填seen而不是seeing?_______ (see) from this angle, the matter is not as serious as that.

问题 副词little修饰动词时一定要用于倒装句吗

...且放在句首时，后面的句子要用倒装句式。如：Little do they know about her alternative career. 他们对她的另一个职业一无所知。Little did they know that the truth would be discovered. 他们一点也不知道实情会被发现。我的疑问是，这样的用法一定...

问题 in five minutes与in five minutes' time正误辨

He did the work in five minutes’ time.在一篇作文题中有这样一句，修改时说要把 in five minutes’ time 改为 in five minutes。但我不知道为什么要这样改，求教各位专家！谢谢！

问题 类似 mankind 这样不加冠词也不用复数的名词

...。Language is peculiar to mankind. 语言是人类特有的。Sympathy is the feeling characteristic of mankind. 同情心是人类特有的情感。He has devoted his whole life to benefiting mankind. 他把自己的一生献给造福人类。能麻烦专家才我归纳一下类似的单词吗？...