Unit 1 In the library 1
Unit 2 Water sports 11
Unit 3 Make our world more beautiful 21
Unit 4 Travel 31
Unit 5 Have a good time！ 41
Unit 6 Mainly revision 52
Unit 7 A man who never give up 60
Unit 8 Merry Christmas 69
Unit 9 What is it made of？ 78
Unit 10 Welcome back 87
Unit 11 What are we going to do？ 96
Unit 12 Autumn festival 104
Unit 13 On the farm 112
Unit 14 Shall we go to the zoo？ 121
Unit 15 Mainly revision 130
Unit 16 The memory robot 139
Unit 17 What’s the weather like？ 147
Unit 18 Mainly revision 156
综合检测题一 165
综合检测题二 168
综合检测题三 172
参考答案 176