Unit One 1
Part One Key Words and Expressions 1
Part Two Vocabulary Practice 4
Part Three Key Structure 14
Part Four Structure Practice 17
Unit Two 21
Part One Key Words and Expressions 21
Part Two Vocabulary Practice 25
Part Three Key Structure 35
Part Four Structure Practice 39
Unit Three 43
Part One Key Words and Expressions 43
Part Two Vocabulary Practice 47
Part Three Key Structure 58
Part Four Structure Practice 61
Unit Four 65
Part One Key Words and Expressions 65
Part Two Vocabulary Practice 68
Part Three Key Structure 80
Part Four Structure Practice 83
Unit Five 86
Part One Key Words and Expressions 86
Part Two Vocabulary Practice 89
Part Three Key Structure 99
Part Four Structure Practice 103
Unit Six 107
Part One Key Words and Expressions 107
Part Two Vocabulary Practice 109
Part Three Key Structure 119
Part Four Structure Practice 122
Revision I 125
Unit Seven 135
Part One Key Words and Expressions 135
Part Two Vocabulary Practice 139
Part Three Key Structure 148
Part Four Structure Practice 151
Unit Eight 155
Part One Key Words and Expressions 155
Part Two Vocabulary Practice 158
Part Three Key Structure 168
Part Four Structure Practice 172
Unit Nine 176
Part One Key Words and Expressions 176
Part Two Vocabulary Practice 178
Part Three Key Structure 188
Part Four Structure Practice 191
Unit Ten 194
Part One Key Words and Expressions 194
Part Two Vocabulary Practice 199
Part Three Key Structure 208
Part Four Structure Practice 211
Unit Eleven 215
Part One Key Words and Expressions 215
Part Two Vocabulary Practice 220
Part Three Key Structure 231
Part Four Structure Practice 235
Unit Twelve 239
Part One Key Words and Expressions 239
Part Two Vocabulary Practice 243
Part Three Key Structure 252
Part Four Structure Practice 255
Revision II 259
Key to Exercises 270