英语 第二外语用PDF电子书下载

Lesson One 1

Lesson Two 13

Lesson Three 22

Lesson Four 31

Lesson Five 39

Review one 50

Lesson Six 55

Lesson Seven 66

Lesson Eight 80

Lesson Nine 93

Lesson Ten 108

Lesson Eleven 122

Lesson Twelve 135

Review Two 148

Lesson Thirteen 154

Lesson Fourteen 169

Lesson Fifteen 183

Lesson Sixteen 196

Lesson Seventeen 210

Lesson Eighteen 227

Review Three 243

Lesson Nineteen 250

Lesson Twenty 267

Lesson Twenty-One 285

Lesson Twenty-Two 306

Lesson Twenty-Three 323

Lesson Twenty-Four 342

Lesson Twenty-Five 358

Review Four 377

Supplementary Reading 387

Ⅰ. Some of the Grases 387

Ⅱ. Faraday and his Generator 390

Ⅲ. Energy and Fuels 392

Ⅳ. Bats and Supersounds 394

Ⅴ. Plastics 396

Ⅵ. Starting Electrons to work(I) 399

Ⅶ. Starting Electrons to work(II) 402

Ⅷ. Human Versus Automatic Control 404

Ⅸ. Travel in Space: To the Moon and Beyond 406

Ⅹ. Thomas Alva Edison 408

Ⅺ. Galieo and the Experimental Method 410

Ⅻ. Newton and the Problem of Gravitation 413

Appendixes 416

Ⅰ. 不规则动词表 416

Ⅱ. 英语构词常识 419

Ⅲ. 总词汇表 422

Ⅳ. 总习语表 466