Unit 13 Text A The Railway Station 1
Text B Back From the Holidays 4
GRAMMAR 不定式 7
WRITING 组词成句（1） 9
Unit 14 Text A Environmental Pollution 11
Text B Noise Pollution 14
GRAMMAR 虚拟语气 18
WRITING 组词成句（2） 20
Unit 15 Text A Kick Your Bad Habits for Good 21
Text B Wake up Your Life 25
GRAMMAR 动名词 28
WRITING 过渡法 30
Unit 16 Text A Mars and Water 32
Text B Sunspots Cause Trouble 37
GRAMMAR 现在分词和过去分词（1） 42
WRITING 应用文——个人资料表单 44
Unit 17 Text A How to Read Textbooks 46
Text B Scientific Method 51
GRAMMAR 现在分词和过去分词（2） 55
WRITING 应用文——业务表单（1）发票 56
Unit 18 Text A The Dawn of E-life 58
Text B Computers in Your Daily Life 63
GRAMMAR 现在分词和过去分词（3） 67
WRITING 应用文——业务表单（2）工作表现评估表 69
Mid-term Sample Test 71
Unit 19 Text A Knowledge Economy 79
Text B Globalization 85
GRAMMAR There be结构 90
WRITING 应用文——名片 91
Unit 20 Text A History of Etiquette 92
Text B Let's Put Some Humanity into E-mail 98
GRAMMAR 定语从句 102
WRITING 应用文——贺卡、通知 104
Unit 21 Text A Genetic Engineering:The Hopes and Fears of the Future 106
Text B Future Men:Living Longer 112
GRAMMAR 状语从句（1） 116
WRITING 应用文——便条 117
Unit 22 Text A Air Pollution and Health 119
Text B The Family and Mental Health 124
GRAMMAR 状语从句（2） 128
WRITING 应用文——邀请函（1）请柬 129
Unit 23 Text A A Fable 131
Text B Little Surfer Girl and the Hungry Shark 135
GRAMMAR 状语从句（3） 139
WRITING 应用文——邀请函（2）邀请信 140
Unit 24 Text A Olympic Games 142
Text B The Joy of Running 147
GRAMMAR 状语从句（4） 150
WRITING 应用文——个人简历 151
Final-term Sample Test 153