Unit 1 Who is this? Unit 2 Can you swim? Unit 3 Let's travel Unit 4 How to Cook? Unit 5 What is fashion? Unit 6 Health is important Unit 7 Hobbies Unit 8 Are you studying? Unit 9 How to make an appointment? Unit 10 0ld tales Unit 11 Harry Potter Unit 12 Animals are the treasure of the earth 附录 不规则动词的过去式和过去分词 参考文献(References)