...有没有人能帮忙分析一下下面这个句子的语法结构。Prior to him, all that was known of electricity and magnetism was what the ancients knew, nothing more than that the lodestone possessed magnetic properties and that amber and jet, when rubbed, would attract bits of paper or other ...
...ere seen ______ on the benches, chatting happily.A. having seated B. to seat C.seating D. seated答案为 D。B 不行，为什么？请顺便解释一下seat 的用法，以及与 sit 的区别，说 seat 是及物动词，它就得用 seated 的形式，太迷茫了。谢谢!
Sam has been appointed _______ manager of the engineering department to take ________ place of George A 不填；不填 B the;不填 C the;the D 不填；the我选得c 答案是d 后面有of引导的介词短语修饰该n，为什么不是指特指呢？答案中说到man...
...e see ? Hidden behind a bush, a hunter was spreading his net. He was going to catch the Dove.(she=The ant)不理解文中Hidden用法，疑问是：此处的Hidden是形容词还是过去分词？如果是形容词，语法如何分析？如果是过去分词，逻辑主语是a hunter, 则似乎矛...
...estined for the Comecon countries declined from almost 15 per cent in 1978 to 6 per cent in 1983.过去几年中，总的来说，欧共体约占中国出口量的11%－12%，而经互会国家占中国出口的比例从1978年的15%降到了1983年的6%。请问destined for在文中怎么理解？
Finally the English government tried in the early twentieth century to form the United Kingdom by getting Ireland connected in the same peaceful way. 不定式短语是看做宾语还是状语呢 如果是宾语为什么和try分开呢
In their another experiment, the scientists found that people who preferred sweet food, such as cookies and chocolate, were more willing to help other people in need.请问：本句的 In their another experiment，是否正确？
如题：They a football game from 7 to 9 last night. （watch）答案是were watching。不过我认为watched也说得通：watch a football game这整个延续性动作从7点开始，到9点结束，全部发生在昨天。所以watched到底可不可以呢？
The XRD patterns of both the samples were well indexed to the standard cubic CsPbBr3 phase, with no observable secondary phases。个人理解：with no observable secondary phases 有种补充说明的意思，难道是啥补充状语？
比如：There are several
different ways to bind a book, for example you can stitch or
stick the pages together. 正确吗？我知道for example前面是句号的时候可以这么用，如果是逗号（如例句）或者分号呢？是否也是正确的？
...f Shanxi Guild, a restaurant chain in Taiyuan, are staying where they work to serve clients during Spring Festival.Stay为不及物动词，为什么后面直接加了where引导的宾语从句？之前也见过stay where you are之类的话～这里的stay为什么都是加从句呢？
Forbes also thought he saw, as he later told the British Association,
that "the number of species and individuals diminishes as we descend,
pointing to a zero in the distribution of animal life as yet unvisited."您好，曹老师，我想请教一下这个句子里的as yet unvisited中的as是什...
Commenting on the find , snake expert Robert Henderson from the Museum of Natural History , said: “Worldwide new species of frogs are being discovered and described quite regularity.请问老师，这个句子里said前面为什么要加逗号? 去掉可以吗？不明白这个逗...