Text:How Computers Are Changing Our World 1
Unit One 1
Grammar：时态（一）：一般现在时 10
Reading Material:Development of Computer 10
Unit Two 10
Text:A Brief Introduction to I/O Devices 10
Grammar：时态（二）：一般过去时 18
Reading Material:Use Conditions and Maintenance of Printer 18
Unit Three 18
Text:Memories and Storage Devices 18
Grammar：时态（三）：现在完成时 26
Reading Material:A Short Passage about Memories 26
Unit Four 26
Text:Operating System 26
Unit Five 33
Text:Software Engineering 33
Reading Material:A Short Passage about Operating System 33
Grammar：复合句（一）：定语从句 33
Grammar：复合句（二）：状语从句 41
Reading Material:Types of Software Products 41
Unit Six 41
Text:Programming 41
Grammar：复合句（三）：What引导的名词性从句 49
Reading Material:Survey of High—Level Programming Languages 49
Unit Seven 49
Text:What is Java? 49
Grammar：被动语态（一）：及物动词的被动语态 56
Reading Material:C 56
Unit Eight 56
Text:Plug and Play 56
Unit Nine 65
Text:Windows Basics 65
Grammar：构词法（一） 73
Reading Material:Using the Control Menu 73
Unit Ten 73
Text:Data Transfer 73
Grammar：构词法（二） 81
Reading Material:DTE/DCE Interfaces 81
Unit Eleven 81
Text:High—level Data Link Control（HDLC） 81
Grammar：构词法（三） 88
Reading Material:Data—Link Protocols 88
Unit Twelve 88
Text:Multimedia Technology 88
Grammar：非谓语动词（一）：分词的句法作用 95
Reading Material:The New Features of Windows 95
Unit Thirteen 97
Text:Internet Terminals 97
Grammar：被动语态（二）：复合宾语，双宾语的被动语态 97
Reading Material:The Importance of Multimedia 97
Grammar：非谓语动词（二）：不定式的句法作用 106
Reading Material:Networks 106
Unit Fourteen 106
Text:How to Protect Your Data 106
Unit Fifteen 116
Text:Computer Viruses 116
Reading Material:Data Independence,Integrity and Security 116
Grammar：被动语态（三）：情态动词的被动语态 116
Grammar：虚拟语气（一）：条件句中的虚拟语气 124
Reading Material:Integrity,Security and Privacy 124
Unit Sixteen 124
Text:The Top Ten Trends in the Computer Industry 124
Grammar：虚拟语气（二）：虚拟语气的其他用法 133
Reading Material:Computers Industry in 90s 133
APPENDIX ONE 133
APPENDIX TWO 143
APPENDIX THERE 154
APPENDIX FOUR 156