Lesson One 1
Lesson Two 10
Lesson Three 18
Lesson Four 30
Lesson Five 39
Lesson Six 55
Lesson Seven 66
Lesson Eight 77
Lesson Nine 91
Lesson Ten 101
Review Exercises Ⅰ 119
Lesson Eleven 125
Lesson Twelve 145
Lesson Thirteen 166
Lesson Fourteen 186
Review Exercises Ⅱ 208
Lesson Fifteen 215
Lesson Sixteen 234
Lesson Seventeen 251
Lesson Eighteen 276
Review Exercises Ⅲ 297
The Chinese Version and Key to the Exercises 302
Appendix Ⅰ不规则动词表 356
Appendix Ⅱ词汇表 359