新概念3册5课The editor at once sent the journalist a fax instructing him to find out````为什么用instructing?还有下面的He sent yet another fax informing the journalist``````为什么用informing?

新概念3册5课The editor at once sent the journalist a fax instructing him to find out````为什么用instructing?还有下面的He sent yet another fax informing the journalist``````为什么用informing? 新概念3册第5课关于一个as用法的问题When the journalist again failed to reply,the editor reluctantly published the article as it had originally been written.中的as是什么用法? 新概念3第5课的句子帮忙看下关于定冠词theThe editor at once sent the journalist a telegram instructing him to find out the exact number of steps and the height of the wall.这里steps 前什么不加the呢?课文里这些steps不是就 新概念英语第三册第5课的一个语法问题The editor at once sent the journalist a fax instructing him to find out the exact number of steps and height of the wall..instruting 为什么要用ing形式呢? 想知道in which在此处的应该如何理解?在背新概念3 是第5课最后一段中 he hand at last been allowed to send a fax in which he informed the editor that he had been arrested.我真不理解在此处in which in which 除了 where的 新概念英语第三册第五课有一句：However ,he had at last been allowed to send a fax in which he infoemed the editor that he had been arrested .这里 为什么用in which 英语定冠词the的问题新概念3里的这句话：The editor at once sent the journalist a fax instructing him to find out the exact number of steps and the height of the wall.为什么wall前有the,而steps前面却没有the?全文如下Editors 新概念三第五课的一个句子However,he had at last been allowed to send a fax in which he imformed the editor that he had been arrested while counting the 1,084 steps leading to the fifteen-foot wall which surrounded the president's palace. editor-at-large是什么意思? 帮忙分析这个英语句子,新概念三第五课最后一句However,he had at last been allowed to send a fax in which he imformed the editor that he had been arrested while counting the 1,084 steps leading to the fifteen-foot wall which surround 新概念第二册 第六课 Percy Buttons 当中的 call at every house in the street ,call at as the chief Editor when the article arrived,the editor read the first sentence and then refused to publish it.（ ）the first sentence ,the editor refused to publish the article.选项A.Reading B.Having read.在新概念英语第二册导读上看到过,现在分词 英语语法问题,关于ing,关于新概念3.the editor at once sent the journalist a fax intructing him to find out the exact number of steps and the height of the wall.请问此处intructing为什么加ing?是动名词吗?另外请举几个例子 he is looking at the picture 调换一下looking at的位置!新概念2册的第7课练习.怎么调啊,能不能调啊. letter to the editor是什么意思 he informed___while carrying out his instructions.1 his arrest to the editor2 the editor his arrest 3 the editor of his arrest 4 the editor that his arrest had been选择哪一个,及为什么 The editor asked me to write an article ______pollution.A.on B.in C.at D.by