CONTENTS

Lesson One

Lesson Two

Lesson Three

Lesson Four

Lesson Five

Lesson Six

Lesson Seven

Revision Exercises(Lessons 1—7)

Lesson Eight

Lesson Nine

Lesson Ten

Lesson Eleven

Lesson Twelve

Revision Exercises(Lessons 8—12)

Appendixes:

APPENDIX Ⅰ Table of Tenses

APPENDIX Ⅱ Irregular Verbs

APPENDIX Ⅲ The Fraction,Decimal,Percentage and Multiple

APPENDIX Ⅳ Vocabulary