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问题 by ambulance为何没有冠词

...名词，但下面这个句子的 ambulance 前为什么没用冠词呢？The old man was taken by ambulance to the nearest hospital. 那位老人被救护车送到最近的一家医院。是不是该 ambulance 前加上一个冠词（定冠词或不定冠词）？

问题 句末现在分词短语（其前有逗号）作什么成分

But tourism is double-edged, boosting the economy but damaging the environment. 请问上面句子末尾的现在分词短语作什么成分？如果是状语，那它是什么状语？

问题 有人在门口去开门如何区分用open还是answer

如果有人在门口，我们要去开门，看到有的人用 open the door，有的人用动词 answer the door。这有什么讲究吗？

问题 请问：句中的it是不是多余的

Apple hopes that the flashy new features of the iPhone 7, which it is expected to introduce in September, will convince customers to abandon older models.请问：句中的 it 是不是多余的？

问题 请问如何理解句中的三个that

In any case however, this poem clearly demonstrates Frost's belief that it is the road that one chooses that makes him the man who he is.请问如何理解句中的三个that？

问题 英语难句理解

They did not stop arguing all the way down to Snape’s dungeon, which gave Harry plenty of time to reflect that between Neville and Ron he would be lucky ever to have two minutes’ conversation with Cho that he could look back on without wanting to leave the country.请问老师，黑体部...

问题 句子翻译（介词短语位置前后顺序）

...朋友住在加拿大。译文：He stayed in Canada with his friends all the way through high school. 请问，介词短语in Canada 和with his friends可否互换位置？变为：He stayed with his friends in Canada all the way through high school.句意是否发生变化？ 

问题 请帮忙分析下这个从句中where的用法

下面这句话来自课文。How about the trick where the puppy goes to school in your book bag?请问在这里 trick 是先行词吗？这句里为什么用 where 来引导从句？

问题 where可以做宾语从句的主语吗？

老师们好，我在小说里看到个句子I called Isaac, who cursed life and the universe and God Himself and who saidwhere are the goddamned trophies to break when you need them.said的宾语从句中可以有where作主语的情况吗？

问题 汉译英：该系统能分析考生回答问题的视频。

一句汉译英：该系统能分析考生回答问题的视频。我的翻译是：It analyses the way of candidates answering questions from the video.感觉不太顺口？另外way后面是如何搭配动词的？ 

问题 Coffee drinking和drinking coffee的区别

Coffee drinking is popular in the UK.Drinking coffee is popular in the UK.请教老师，Coffee drinking和drinking coffee的区别，都可以用在书面语作句子主语吗？谢谢老师。

问题 关于as…as的解释

英文：Similarly, the summers were rarely as idyllic or the nation as glorious as sentiment would have it中文：同样，以前的夏季很少像现在这样有诗般田园风光，国家也没有像现在这般有民族自豪感。问：分析一下句子的语法结构，would have这里用的...

问题 主系表结构中的表语划分存疑

The man is a policeman.请问老师这句话中的表语成分应该是policeman 还是a policeman?之前在语法书中看到The man 即定冠词+名词 可以看作名词短语作主语。然而a policeman是否也能看作名词短语作表语？

问题 lay bare在句子中的成分

比如这句话But a botched response to the virus would lay bare tensions inherent in the party’s hybrid claims to legitimacy.如果lay是谓语动词，那么bare作什么句子成分呢？是lay的状语吗？

问题 介词宾语从句中连接词使用问题

在介词宾语从句里，连接副词能不能引导？比如这句话：Shanghai did not originate from where the tall buildings are.这句介词宾从是连接代词who引导的，正确吗？we should appeal to who are living in those wealthy countries to donate money to the poor people.