Unit One 1
Lesson One 1
Text Introduction to the Computer s Peripherals——Input and Output(Ⅰ) 1
Grammar 句子成份 3
Lesson Two 6
Text Introduction to the Computer s Peripherals——Input and Output(Ⅱ) 6
Grammar 并列句和复合句（Ⅰ） 9
Lesson Three 11
Text Introduction to the Computer s Peripherals——Input and Output (Ⅲ) 11
Grammar 并列句和复合句（Ⅱ） 14
Lesson Four 17
Text Programming Concepts 17
Grammar 句子成份的倒装和强调 20
Lesson Five 22
Text Flowcharts 22
Lesson Six 25
Review(1～5) 25
科技英语翻译方法（Ⅳ） 25
Unit Two 29
Lesson Seven 29
Text What is Meant by High-level Language ？ 29
Lesson Eight 32
Text Why Use a High-level Language？ 32
Lesson Nine 35
Text Introduction to BASIC 35
Lesson Ten 38
Text FORTRAN 38
Lesson Eleven 41
Text Pascal 41
Lesson Twelve 44
Text C 44
Lesson Thirteen 48
Review(7～12) 48
科技英语的特点（1），构词法及同义词辨析（V） 48
Unit Three 53
Lesson Fourteen 53
Text Software（Ⅰ） 53
Lesson Fifteen 58
Text Software(Ⅱ) 58
Lesson Sixteen 62
Text The Operating System 62
Lesson Seventeen 68
Text The Disk Operating System 68
Lesson Eighteen 72
Text The Introduction of Microsoft Windows 72
Lesson Nineteen 76
Review(14～18) 76
科技英语的特点（Ⅱ），构词法及同义词辨析（Ⅵ） 76
Unit Four 81
Lesson Twenty 81
Text Computer Networks 81
Lesson Twenty-one 86
Text Internet 86
Lesson Twenty-two 91
Text Computer Virus 91
Lesson Twenty-three 95
Text Multimedia Computers Technology 95
Lesson Tewnty-four 101
Review（20～23） 101
科技英语的特点(Ⅲ),构词法(Ⅶ) 101
Unit Five 105
Lesson Twenty-five 105
Text Guide to Purchasing a Computer System(Ⅰ)——Introduction 105
Lesson Twenty-six 111
Text Guide to Purchasing a Computer System(Ⅱ)——Hardware&Software Checklist 111
Lesson Twenty-seven 117
Text Guide to Purchasing a Computer System(Ⅲ)——Support&General Checklist 117
Lesson Tewenty-eight 121
Review(25～27) 121
科技英语的翻译准则，构词法（Ⅷ） 121
附录一 译文和练习答案 127
附录二 英语科技文献中常用的非英语单词、短语和略语 154
参考文献 154