Lesson 1

Lesson 2

Lesson 3

Lesson 4

Lesson 5

Review Exercises(Lessons1-5)

Lesson 6

Lesson 7

Lesson 8

Lesson 9

Lesson 10

Review Exercises(Lessons 6-10)

Lesson 11

Lesson 12

Lesson 13

Lesson 14

Lesson 15

Lesson 16

Review Exercies(Lessons 11-16)

Appendix Ⅰ Rules of Reading Governing Digraphs 一些字母组合的读音规则

Appendix Ⅱ Everyday Expressions 日常用语

Appendix Ⅲ A List of Irregular Verbs 不规则动词表

Appendix Ⅳ Phrases and Expressions 短语和词组

Appendix Ⅴ Vocabulary