四川邮电职业技术学院教案专用纸 understanding of the new text. Now, let's have a careful study of the text Minute III. While-reading Activities i New words and phrases Students read the new words and phrases aloud one by one after teacher. 3 2mins ii. Text organization 1. Ss read the text and point out the main idea of the text The main idea: The text mainly discusses the concept, the four generic architectural components as well as their functions and the five classes of switching mins centers or nodes as well as their functions about the public telecommunication network 2. Ss make an analysis of the organization of the text mIns The text may be divided into three major sections Section 1(Linesl-6): the introduction of the conce telecommunication network Section 2(Lines7-26): the four generic architectural components as well their functions of the public telecommunication network Section 3(Lines27-96): the five classes of switching centers or nodes as well their functions about the public telecommunication network 1.本篇课文涉及通信网领域,题目可译为:“公用电信网” 2. The telephone contains a transmitter and receiver for converting back and forth between analog voice and analog electrical signals The telephone contains a transmitter. electrical signals.该句译为:“电话 机包括一个送话器和一个受话器,用来在模拟话音(声波)和模拟(声频)电信 之间进行变换”句中for+动词的ing形式表示目的; back and forth表示(前 后)来回,来来往往的 3. Although originally designed and implemented to service analog telephone subscribers, it handles substantial data traffic via modem, and is gradually being converted to a digital network Although引导让步状语从句,句中省略了主语和系动词.is being converted to是进行时被动结构,相当于 s being changed into, 思是正转变为 Page 4 of 6 Teaching Plan of English for Telecommunications Unit14四川邮电职业技术学院教案专用纸 Page 4 of 6 Teaching Plan of English for Telecommunications Unit14 understanding of the new text. Now, let’s have a careful study of the text. (1minute) III. While-reading Activities i. New words and phrases Students read the new words and phrases aloud one by one after teacher.( 3 minutes) ii. Text organization 1. Ss read the text and point out the main idea of the text. The main idea: The text mainly discusses the concept, the four generic architectural components as well as their functions and the five classes of switching centers or nodes as well as their functions about the public telecommunication network. 2. Ss make an analysis of the organization of the text . The text may be divided into three major sections. Section 1 (Lines1-6): the introduction of the concept of the public telecommunication network. .Section 2 (Lines7-26): the four generic architectural components as well as their functions of the public telecommunication network. Section 3 (Lines27-96): the five classes of switching centers or nodes as well as their functions about the public telecommunication network. iii. Key language points 1.本篇课文涉及通信网领域，题目可译为:“公用电信网”. 2. The telephone contains a transmitter and receiver for converting back and forth between analog voice and analog electrical signals. The telephone contains a transmitter… electrical signals. 该句译为:“电话 机包括一个送话器和一个受话器，用来在模拟话音(声波)和模拟(声频)电信 号之间进行变换”.句中for+动词的-ing形式表示目的;back and forth表示(前 后)来回，来来往往的. 3. Although originally designed and implemented to service analog telephone subscribers, it handles substantial data traffic via modem, and is gradually being converted to a digital network. Although 引导让步状语从句, 句中省略了主语和系动词. is being converted to 是进行时被动结构,相当于 is being changed into, 意思是正转变为. 2mins 4 mins 1 mins