英语PDF电子书下载

Lesson One 1

Lesson Two 8

Lesson Three 16

Lesson Four 23

Lesson Five 30

Lesson Six 37

Lesson Seven 45

Lesson Eight 53

Lesson Nine 63

Lesson Ten 72

Lesson Eleven 82

Lesson Twelve 91

Lesson Thirteen 99

Lesson Fourteen 107

Lesson Fifteen 118

Lesson Sixteen 126

Lesson Seventeen 136

Lesson Eighteen 148

Lesson Nineteen 157

Lesson Twenty 168

Lesson Twenty-One 178

Lesson Twenty-Two 188

Lesson Twenty-Three 196

Lesson Twenty-Four 206

Lesson Twenty-Five 214

Lesson Twenty-Six 223

Lesson Twenty-Seven 230

Lesson Twenty-Eight 238

Lesson Twenty-Nine 248

Lesson Thirty 256

Lesson Thirty-One 264

Lesson Thirty-two 273

Lesson Thirty-Three 284

Lesson Thirty-Four 293

Lesson Thirty-Five 304

Lesson Thirty-Six 314

Lesson Thirty-Seven 325

Lesson Thirty-Eight 335

Lesson Thirty-Nine 345

Lesson Forty 357

附录 370

Ⅰ.语音 370

Ⅱ.不规则动词表 380

Ⅲ.数词 384

Ⅳ.缩写词 389

Ⅴ.短语及词组 392

Ⅵ.总词汇表 401

Ⅶ.歌曲 431