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问题 a busy school day前面填什么介词

It is fun for me to exercise ______ a busy school day.填 in 还是 after ，为什么呢？

问题 a step backwards（backwards可以用作名词吗）

Technologically, this is a step backwards. 技术上这是个退步。 backwards我查了好多词典，都是个副词，那这个backwards怎么能放在名词后面呢？

问题 两个语法问题

1 Have you ever heard people can died of kiss?老师，can后面应该+动词原形，但为什么这里can后面加了过去式died呢？2 Oh, but why you say she died of kiss?老师，这里为何不写成：Oh, but why did you say she died of kiss呢？以上两句请老师讲解。谢谢。

问题 多个介词词组作后置修饰语时这些介词词组是否是层次性修饰

尊敬的各位老师：a girl in red on the table这个名词词组里，in red和on the table都是后置修饰语，那么这个名词词组里是不是in red修饰girl，on the table修饰girl in red。我知道名词的多个前置修饰语之间如果没有and或者逗号等分隔开，那么...

问题 表语是用 A and B主语能用this吗

...老师你好，有这样一句个子不知道是否正确：This is letter A and letter B. 宾语是letter A and letter B, 在这种情况下，不知道是否主语是用 these 还是用 this, 还是这两个词都可以。这个问题我问了几个人，都没有得到统一的答案，请老师...

问题 a woman doctor是名词作定语还是复合名词

有的书上说 a woman doctor 是复合名词，有的则说是 woman 作定语。请问哪种说法才是“最”对的？谢谢！

问题 whose与pair的位置关系

请问下面哪句的语序是对的？ Whose pair of glasses is this？ Whose glasses is this pair of？ Whose is that pair of shoes？

问题 句子一开头就用that是不是多余的

That the poem is one work of romanticism shown not only in exaggerating symbols but also in its flowery words. 请问句子一开头的 that 是不是多余的？

问题 请问：each its own是什么意思？

External interests, it is true, bring each its own possibility of pain: the world may be plunged in war, knowledge in some direction may be hard to achieve, friends may die.请问：each its own是什么意思？

问题 不定式一般式与完成式的区别

You are expected to know (know)the laws of your own country.我认为这句话的意思是说你们被认为已了解你们国家的法律.为什么不是to have known呢？

问题 letters后面是省略了关系副词吗？

Chinese President Xi Jinping and Nepalese President Bidya Devi Bhandari jointly announced the new height of Mt. Qomolangma, which is 8848.86 meters, in letters they sent to each other on December 8.老师您好，请问这里的letters后面省略了引导词吗？是where吗，引导定语从句。

问题 traffic和trafficking作为名词的区别

...词，请问用法有什么具体区别吗？词典例句是这样的：...the widespread traffic in stolen cultural artefacts.He was sentenced to ten years in prison on charges of drug trafficking.请问这两句中的traffic和trafficking可以互换使用吗？为什么？

问题 trickle down后面为什么加to

以trick down 向下流淌为例：To make the gains of innovation better trickle down (to) peopletrickle是vi.，所以后面加介词跟宾语，但是为什么还要加个介词to呢？有什么差别吗？同理，像 stream down (to)

问题 句子成分分析

...关系)，但问题是为什么移到句尾了？For most people,life as they find it is often the life they lead.关于这个句子的as这样理解对不对：这里只有一个as，但as引导的是比较结构，这个句子可以看作：For most people, life (as ???) as they find it is often t...

问题 不定冠词a/an与数词one的区别

不定冠词a/an与数词one的区别有哪些？请帮忙归纳一下，百度上有很多，但不权威。请老师帮忙！谢谢！