大学英语实用教程 3PDF电子书下载

Unit 1 Love and Friendship 1

Communicative Samples 1

Paragraph Reading A:Friendship 2

Paragraph Reading B:Friendship 5

Grammar Focus：情态动词（一） 8

Unit 2 Customs and Habits 13

Communicative Samples 13

Paragraph Reading A:Beliefs and Interests 14

Paragraph Reading B:Gender Tax 17

Grammar Focus：情态动词（二） 20

Unit 3 Human and the Earth 25

Communicative Samples 25

Paragraph Reading A:The Meaning of the 21st Century 26

Paragraph Reading B:Imagine Earth without People 30

Grammar Focus：主谓一致（一） 34

Unit 4 Youth and Dreams 39

Communicative Samples 39

Paragraph Reading A:The Autumn——the Harvest Season 40

Paragraph Reading B:The Two Roads 43

Grammar Focus：主谓一致（二） 45

Unit 5 Festivals and Holidays 50

Communicative Samples 50

Paragraph Reading A:The Thanks We Give 51

Paragraph Reading B:The Origins of the April Fool's Day 55

Grammar Focus：虚拟语气 57

Unit 6 Language and Culture 63

Communicative Samples 63

Paragraph Reading A:Proverbs 64

Paragraph Reading B:What Is the Worth of Words? 67

Grammar Focus:名词性从句 71

Unit 7 Time and Money 76

Communicative Samples 76

Paragraph Reading A:The Value of Time 77

Paragraph Reading B:Your Money Is Your Life 81

Grammar Focus：定语从句（一） 84

Unit 8 How to Learn 89

Communicative Samples 89

Paragraph Reading A:The Special Joy of Super-slow Reading 90

Paragraph Reading B:Feed Your Mind 93

Grammar Focus：定语从句（二） 96

Unit 9 Weather and Climate 101

Communicative Samples 101

Paragraph Reading A:The Weather in Britain 102

Paragraph Reading B:Weather 106

Grammar Focus：状语从句（一） 108

Unit 10 Education 114

Communicative Samples 114

Paragraph Reading A:In Amy's Eyes 115

Paragraph Reading B:Culture and Arts 119

Grammar Focus：状语从句（二） 122

Unit 11 Traffic and Transmission 127

Communicative Samples 127

Paragraph Reading A:The Breakdown Assistance 129

Paragraph Reading B:A Letter 131

Grammar Focus：交际用语和习惯表达（一） 134

Unit 12 Environment and Conservation 139

Communicative Samples 139

Paragraph Reading A:The Air Pollutant 141

Paragraph Reading B:Greenspace 144

Grammar Focus：交际用语和习惯表达（二） 147

Glossary 152

Model Test 1 172

Model Test 2 180

Answer Keys 189