Ⅰ．Teaching Plans 1
Unit 1 1
Unit 2 22
Unit 3 42
Unit 4 55
Unit 5 67
Unit 6 85
Unit 7 104
Unit 8 119
Ⅱ．Key to Exercises 132
Unit 1 132
Unit 2 138
Unit 3 144
Unit 4 149
Unit 5 155
Unit 6 161
Unit 7 168
Unit 8 174
Ⅲ．Chinese Translation of the Texts 180
Unit 1 180
Unit 2 185
Unit 3 190
Unit 4 194
Unit 5 199
Unit 6 204
Unit 7 209
Unit 8 215