Unit 1 Welcome back！ 1
Lesson 1 1
Lesson 2 6
Lesson 3 13
Lesson 4 16
单元过关直通车 21
Unit 2 What are we going to do？ 27
Lesson 5 27
Lesson 6 31
Lesson 7 35
Lesson 8 39
单元过关直通车 42
Unit 3 Autumn festivals 47
Lesson 9 47
Lesson 10 52
Lesson 11 59
Lesson 12 62
单元过关直通车 65
Unit 4 On the farm 71
Lesson 13 71
Lesson 14 76
Lesson 15 80
Lesson 16 83
单元过关直通车 86
Unit 5 Shall we go to the zoo？ 91
Lesson 17 91
Lesson 18 95
Lesson 19 99
Lesson 20 103
单元过关直通车 106
Unit 6 Find the right place！ 111
Lesson 21 111
Lesson 22 114
Lesson 23 119
Lesson 24 123
单元过关直通车 127
Unit 7 Mainly revision 133
Lesson 25 133
Lesson 26 137
Lesson 27 141
Lesson 28 147
单元过关直通车 150
Unit 8 I was not here yesterday 155
Lesson 29 155
Lesson 30 160
Lesson 31 164
Lesson 32 169
单元过关直通车 174
Unit 9 The memory robot 179
Lesson 33 179
Lesson 34 184
Lesson 35 189
Lesson 36 193
单元过关直通车 196
Unit 10 The Swedish rock band 201
Lesson 37 201
Lesson 38 205
Lesson 39 211
Lesson 40 215
单元过关直通车 219
Unit 11 Dates， months and seasons 225
Lesson 41 225
Lesson 42 229
Lesson 43 234
Lesson 44 237
单元过关直通车 240
Unit 12 What’s the weather like？ 247
Lesson 45 247
Lesson 46 251
Lesson 47 258
Lesson 48 261
单元过关直通车 264
Unit 13 Come to the party！ 269
Lesson 49 269
Lesson 50 273
Lesson 51 276
Lesson 52 280
单元过关直通车 285
Unit 14 Mainly revision 291
Lesson 53 291
Lesson 54 294
Lesson 55 298
Lesson 56 302
单元过关直通车 308
单元过关直通车参考答案（Unit 1-Unit 14） 313