Unit 1 1
Unit Overview 1
PartⅠ Preparatory 3
PartⅡ Language in Context 4
PartⅢ Toward Productive Language 15
Unit 2 23
Unit Overview 23
PartⅠ Preparatory 25
PartⅡ Language in Context 26
PartⅢ Toward Productive Language 36
Unit 3 43
Unit Overview 43
PartⅠ Preparatory 45
PartⅡ Language in Context 46
PartⅢ Toward Productive Language 54
Unit 4 63
Unit Overview 63
PartⅠ Preparatory 65
PartⅡ Language in Context 66
PartⅢ Toward Productive Language 76
Unit 5 85
Unit Overview 85
PartⅠ Preparatory 87
PartⅡ Language in Context 88
PartⅢ Toward Productive Language 99
Unit 6 108
Unit Overview 108
PartⅠ Preparatory 110
PartⅡ Language in Context 111
PartⅢ Toward Productive Language 122
Unit 7 130
Unit Overview 130
PartⅠ Preparatory 132
PartⅡ Language in Context 133
PartⅢ Toward Productive Language 145
Unit 8 152
Unit Overview 152
PartⅠ Preparatory 154
PartⅡ Language in Context 155
PartⅢ Toward Productive Language 165