美国语文 和大自然做朋友 1 原版插图 英汉双语 常青藤版PDF电子书下载

Chapter 1 第一章 1

Lesson 1 3

Lesson 2 4

Lesson 3 5

Lesson 4 6

Lesson 5 8

Lesson 6 Review 10

Chapter 2 第二章 13

Lesson 7 15

Lesson 8 16

Lesson 9 17

Lesson 10 19

Lesson 11 21

Lesson 12 23

Lesson 13 25

Lesson 14 27

Lesson 15 29

Lesson 16 31

Lesson 17 Review 33

Chapter 3 第三章 35

Lesson 18 37

Lesson 19 39

Lesson 20 41

Lesson 21 43

Lesson 22 45

Lesson 23 47

Lesson 24 48

Lesson 25 50

Lesson 26 54

Lesson 27 Review 55

Chapter 4 第四章 57

Lesson 28 59

Lesson 29 61

Lesson 30 62

Lesson 31 64

Lesson 32 65

Lesson 33 66

Lesson 34 67

Lesson 35 69

Lesson 36 71

Lesson 37 73

Lesson 38 74

Lesson 39 76

Lesson 40 77

Lesson 41 78

Lesson 42 82

Lesson 43 83

Lesson 44 85

Lesson 45 87

Lesson 46 88

Lesson 47 90

Lesson 48 91

Lesson 49 92

Lesson 50 94

Lesson 51 96

Lesson 52 Review 98

Chapter 5 第五章 101

Lesson 53 103

Lesson 54 105

Lesson 55 107

Lesson 56 109

Lesson 57 110

Lesson 58 111

Lesson 59 113

Lesson 60 114

Lesson 61 116

Lesson 62 118

Lesson 63 120

Lesson 64 Review 121

Chapter 6 第六章 123

Lesson 65 125

Lesson 66 127

Lesson 67 129

Lesson 68 131

Lesson 69 132

Lesson 70 134

Lesson 71 136

Lesson 72 137

Lesson 73 139

Lesson 74 141

Lesson 75 Review 143

Chapter 7 第七章 145

Lesson 76 147

Lesson 77 149

Lesson 78 151

Lesson 79 152

Lesson 80 156

Lesson 81 158

Lesson 82 160

Lesson 83 163

Lesson 84 166

Lesson 85 168

Lesson 86 169

Lesson 87 172

Lesson 88 173

Lesson 89 174

Lesson 90 177

Lesson 91 181

Lesson 92 186

Lesson 93 187

Lesson 94 188