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1、非谓语动词作状语，其逻辑主语须与主句主语保持一致。若不一致，非谓语动词形式须另带主语，从而构成复合结构的形式作状语。这种结构称为“独立结构”。其中，非谓语动词主动用现在分词，被动用过去分词。 非谓语动词及其短语前面带有逻辑主语，逻辑主语的代词又是主格，故常称为“独立主格” 。“独立结构”在句中起状语作用，相当于状语从句，表示时间、原因、条件、方式或伴随等情况。编辑本段功能独立主格结构主要用于描绘性文字中，其作用相当于一个状语从句，常用来表示时间、原因、条件、行为方式或伴随情况等。例如：表示时间The meeting being over, all of us went home. 开完会后我们
2、都回家了。 Her work being done, she sat down for a cup of tea. 她干完了活，坐下来喝茶。表示条件The condition being favourable, he may succeed. 若条件有利，他或许能成功。表示原因There being no taxis, we had to walk. 没有出租车，我们只好步行。 He wrapped her up with great care, the night being dark and frosty. 夜又黑又冷，所以他把她裹得严严实实的。表示伴随情况Almost all metal
3、s are good conductors, silver being the best of all. 几乎所有的金属都是良导体，而银则是最好的导体。(=Almost all metals are good conductors, and silver is the best of all.)编辑本段用法独立主格结构主要表示谓语动词发生的时间、原因、条件或伴随情况等，相当于一个状语从句或并列句。用作时间状语The work done(=After the work had been done), we went home. 工作完成后，我们就回家了。用作条件状语Weather permitt
4、ing(=If weather permits), they will go on an outing to the beach tomorrow. 如果天气允许的话，他们将在明天组织一次海滨小游。用作原因状语An important lecture to be given tomorrow(=As an important lecture will be given tomorrow), the professor has to stay up late into the night. 因为明天要发表一个重要的演讲，教授不得不熬夜到很晚。用作伴随状语He was lying on the g
5、rass,his hands crossed under his head(=and his hands were crossed under his head).他躺在草地上，两手交叉枕在脑后。表示补充说明We redoubled our efforts, each man working like two. 我们加倍努力，一个人干两个人的活。 *注：独立主格结构表示时间、条件或原因时，相当于一个状语从句，一般放在句首，表示原因时还可放在句末；表伴随状况或补充说明时，相当于一个并列句，通常放于句末。编辑本段形式1一般独立主格形式: 与主句逻辑关系松散形式为: n. + -ed/-ing 形式
6、; n. + 不定式 ; n. + 介词短语; n. + 形容词 ; n. + 副词 ;名词/主格代词+现在分词名词/主格代词与现在分词之间是主动关系。 如： The girl staring at him(= As the girl stared at him), he didnt know what to say. 姑娘两眼望着他，他不知道说什么好。 Time permitting(= If time permits), we will go for an outing tomorrow. 如果时间允许的话，我们明天去郊游。名词/主格代词+过去分词名词/主格代词与过去分词之间是被动关系。
7、如： The problems solved(= As the problems were solved), the quality has been improved. 随着问题的解决，质量已经提高了。 Her glasses broken(= Because her glasses were broken), she couldnt see the words on the blackboard. 由于眼镜摔坏了，她看不见黑板上的字。名词/主格代词+不定式名词/主格代词与不定式之间是主动关系，且强调的是一次具体性的动作。 如： He is going to make a model pla
8、ne, some old parts to help. 借助于一些旧零件，他要做一个飞机模型。 They said good-bye to each other, one to go home, the other to go to the bookstore. 他们道别后，一个回了家，一个去了书店。名词/主格代词+形容词如： An air accident happened to the plane,nobody alive. 那架飞机遭遇了空难，无一人生还。 So many people absent, the meeting had to be called off. 这么多人缺席，会议
9、不得不取消。名词/主格代词+副词如： He put on his sweater ,wrong side out. 他把毛衣穿反了。 The meeting over, they all went home. 会议一结束，他们就都回家了。名词/主格代词+介词短语如： The boy goes to the classroom,book in hand. 那男孩手里拿着书去教室。 Mary was sitting near the fire, her back towards the door. 玛丽靠近火炉坐着，背对着门。 2with 引导的独立主格:与主句逻辑关系紧密 形式为 : with
10、+ n. + -ed/-ing 形式; with + n. +adj.; with +n. + 介词短语 3each 引导的强调型独立主格: 强调句尾的复数名词 形式为:句子 + 复数名词结尾 , each + 介词短语/形容词短语/名词短语/-ing 形式/-ed 形式 如: Under the restructuring, the huge organization that operates the companys basic businesses will be divided into five groups, each with its own executive.（题源:GMA
11、T 语法全解白勇著，Page38） 4其他形式There being +名词（代词）如： There being nothing else to do, we went home. 没有别的事可做，我们就回家了。 There being no further business, I declare the meeting closed. 没有再要讨论的事了，我宣布散会。It being +名词（代词）如： It being Christmas, the government offices were closed. 由于圣诞节的缘故，政府机关都休息。 It being a holiday, a
12、ll the shops were shut. 由于今天是假日，所有商店都关门了。编辑本段特点1）独立主格结构的逻辑主语与句子的主语不同，它独立存在。 2）名词或代词与后面的分词，形容词，副词，不定 式，介词等是主谓关系。 3）独立主格结构一般有逗号与主句分开。 举例：The test finished, we began our holiday. = When the test was finished, we began our holiday. 考试结束了，我们开始放假。 The president assassinated, the whole country was in deep
13、sorrow. = After the president was assassinated, the whole country was in deep sorrow. 总统被谋杀了，举国上下沉浸在悲哀之中。 Weather permitting, we are going to visit you tomorrow. 如果天气允许，我们明天去看你。 This done, we went home. 工作完成后，我们才回家。 The meeting gone over, everyone tired to go home earlier. 会议结束后，每个人都想早点回家。 He came i
14、nto the room,his ears red with cold. 他回到了房子里，耳朵冻坏了。 He came out of the library, a large book under his arm. 他夹着本厚书，走出了图书馆 注：独立主格结构有时可在其前加上介词with。 如： Dont sleep with the windows open.别开着窗睡觉。 He was lying on the bed with all his clothes on. 他和衣躺在床上。 She came in with a book in her hand. 她手里拿着一本书走了进来。 H
15、e fell asleep with the lamp burning. 他没熄灯就睡着了。 I wont be able to go on holiday with my mother being ill. 因为妈妈有病，我无法去度假。 He sat there with his eyes closed. 他闭目坐在那儿。 All the afternoon he worked with the door locked.整个下午他都锁着门在房里工作。 I cant go out with all these clothes to wash. 要洗这些衣服，我无法出门了。特殊当独立主格与主句主
16、语不同时可有：eg:We walking through the garden,the flowers are beautiful.编辑本段注意事项1.独立主格转换成状语从句，当状语从句的主语与主句的主语不是指同一个对象时，可用独立主格结构取代状语从句，但不再保留连词。如：After class was over (=Class being over / Class over), the students soon left the classroom.下课后，学生很快离开了课室。2. 不能省略 being (having been)的情形：在下列两种情况下，独立主格结构中的 being（或 having been）不
