[所有分类]专业英语ma.ppt

专业英语 主讲：马永红 副教授 华北电力大学电气与电子工程学院 2012.2 L1:绪论 目的：扩大通信词汇量，熟悉专业术语，了解科技论文的表达特点，掌握英语翻译技巧。 词汇：掌握800-1000个单词及其构成的常见词组，阅读量约为40000词. 语法：熟悉专业英语中常见的语法结构与特点，掌握长句的分析方法，具有综合运用语法知识的能力。 阅读能力：在指定的时间内，能用中文正确地复述原文大意，能借助词典阅读与课文难易相当的专业英文资料，阅读速度达到每分钟50单词，理解正确率达到70%以上。 翻译能力：能正确识别词性，选择词意，掌握常用的翻译方法与技巧，比较正确地翻译出原文，笔译速度达到每小时350个英语单词。 目录 第一部分：主要语法现象 第二部分：课文 UNIT 1：The Principle of PCM UNIT 2：Asynchronous Serial Data Transmission UNIT 3：Communicating with data UNIT 4：Internet UNIT 5：Introduction to Optical Fibre Communication UNIT 6：Synchronous Digital Hierarchy UNIT 7：WDM UNIT 8：The development of paging system UNIT 9：Cellular Mobile Telephone System UNIT 10：GSM (Global System for Mobile Communication) UNIT 11：Circuit Switching and Packet Switching UNIT 12：ATM UNIT 13：Multimedia UNIT 14：The Public Telecommunications Network UNIT 15：Integrated Services Digital Network UNIT 16: Current Situation and the Future in the Telecommunication World 动名词 现在分词 过去分词 动词不定式 被动语态 动名词 动名词的作用相当于名词，它在句子中可做主语，宾语，介词宾语. Reading is a good habit. I enjoy working with you. I am interested in reading. 特别强调的是，动名词的作用相当于名词，但它仍然具有动词的特征,可以有自己的宾语和状语。 I am interested in carefully reading books. Digital transmission provides a powerful method for overcoming noisy environments. 现在分词 作形容词用,有主动的意义: The smiling girl is Wangling. This is a amusing story. 在更多情况下，我们可以用现在分词短语作定语，往往放在所修饰的名词之后，在意思上和一个定语从句差不多。 The girl standing by the window talked to her friend. 现在分词还可以作状语，用来表示方式、目的、条件、结果和背景等等；有时表示主语在作一个动作的同时还进行的另一动作，此时称之为伴随状态。 Every evening they sit in sofa watching TV. I read the English book, using my dictionary. At the receiving end of an asynchronous serial data link, the receiver continually monitors the line looking for a start bit. 过去分词 过去分词作形容词用，有被动的意义,多做定语。 The trees planted by me have grown up. For example, the signal received from a satellite, located in far outer space, is very weak and is at a level only slightly above that of the noise.