Lesson 1

Lesson 2

Lesson 3

Lesson 4

Lesson 5

Lesson 6

Review Exercises(Lessons 1—6)

Lesson 7

Lesson 8

Lesson 9

Lesson 10

Review Exercises(Lessons 7—10)

Lesson 11

Lesson 12

Lesson 13

Lesson 14

Lesson 15

Review Exercises(Lesson 11—15)

Appendix Ⅰ Exercise Directions

Appendix Ⅱ A List of Irregular Verbs

Appendix Ⅲ Phrases and Expressions

Appendix Ⅳ Vocabulary