unit4 计算机专业英语

Notes
[5]Routing tables are the means by which a router selects the fastest or nearest path to the next “hop” on the way to a data packet’s final destination. 本句中， by which a router selects the fastest or nearest path to the next “hop” on the way to a data packet’s final destination 是一个介词前置的定语从句，修饰和限定the means。on the way to“在……途中”。
学生课下活动设计
阅读Unit4的Reading。完成作业
作业： 我的梦想是成为一家电脑公司的销售经理。 老师告诉同学们别触摸电脑屏幕。 他停下来喝了杯茶。 他努力学习为了通过期末考试。 学校是孩子们学习的好地方。 这些学生经常帮助老师打扫实验室。 昨天我忘了邮信了。 他足够大了可以自己做决定。
教学参考资料推荐
Notes
[3] The MAU does actively regenerate signals as it transmits data around the ring. 本句中，does起强调作用。 [4]Routers contain internal tables of information called routing tables that keep track of all known network addresses and possible paths throughout the internetwork,along with cost of reaching each network. 本句中，called routing tables是过去分词短语，做定语，修饰 和限定internal tables of information。that keep track of all known network addresses and possible paths throughout the internetwork,along with cost of reaching each network是一 个定语从句，修饰和限定routing tables。keep track of是“ 跟踪”。
学生课下活动设计
预习Unit4的Text，试做翻译。
第二次课
【教学内容】翻译课文，完成课后理解练习。 【课时目标】能将课文翻译成汉语，了解连网设备的使用 ，完成课 后理解练习。 【教学重点、难点】 重点：准确理解课文内容，较准确地译成汉语。 难点：文中长句的翻译。
ห้องสมุดไป่ตู้
Text
阅读课文并翻译，结合课后练习一加深知识的理解。 对长句重点讲解
《计算机专业英语教程》，宋德富，司爱侠，高等教育出版社， 2013年9月，第四版
Exercises
What is a hub? What does an active hub do? What is a repeater? What is the maximum segment length for a UTP cable on an Ethernet network? What must a switch be able to do? What is a bridge used to do?Where does it operate? Where are routers most often used? Why cannot routers compile routing tables from the information in the data packets they process? What is a brouter? What does it do? What is a gateway? Where does it operate?
New Words
New Words
Phrases
Phrases
Abbreviations
Exercises
1.数千人花了多年时间建造了这间实验室。
2.众所周知，CPU代表中央处理器。 3.据说他们发明了一种新型计算机。 4.有人看见他把鼠标拿出了实验室。 5.大学生做兼职是有意义的。
1.数千人花了多年时间建造了长城。 It took thousands of people many years to build the Great Wall. 2.众所周知，CPU代表中央处理器。 It is well-known that CPU stands for central processing unit. 3.据说他们发明了一种新型计算机。 It’s reported that they have invented a new type of computer. 4.有人看见他把鼠标拿出了实验室。 Someone saw him take the mouse out of the lab.或者 He was seen to take the mouse out of the lab. 5.大学生做兼职是有意义的。 It is meaningful for a college student to take/do a part-time job.
Notes
[1] The hub is a hardware device that contains multiple,independent ports that match the cable type of the network. 本句中，that contains multiple,independent ports是定语从句 。 that match the cable type of the network是定语从句。 [2] If，for example,you have a thin Ethernet network with a cable segment longer than the prescribed maximum of 185 meters,you can install a repeater at some point in the segment to strengthen the signals and increase the maximum segment length. 本句中，If引导一个条件状语从句。with a cable segment longer than the prescribed maximum of 185 meters做定语， 修饰和限定a thin Ethernet network。 To strengthen the signals and increase the maximum segment length是动词不 定时，做目的状语。
张强华 司爱侠 编著
计算机专业英语教程
机械工业出版社
Unit 4
Networking Devices
退出
第一次课
【教学内容】 Unit 4 词汇、练习 【课时目标】检查学生上一单元的知识掌握情况,识记相关词汇、短 语，做练习。 【教学重点、难点】词汇的识记与练习。
New Words
New Words