英语口语用语和词汇PDF电子书下载

Contents 1

Ⅰ．Texts 1

Lesson One The Year 1

Lesson Two Insects 5

Lesson Three Plant，Its Parts and Their Functions 9

Lesson Four Forests Promote Rich Harvest 14

Lesson Five Soil 18

Lesson Six Climate and Crop Production 22

Lesson Seven Heavy Snow Foretells a Bumper Harvest 26

Lesson Eight Bacteria 31

Lesson Nine Water 36

Lesson Ten Combating Harmful Insects with Insects 39

Lesson Eleven How Plants Feed 41

Lesson Twelve Plants and Environment 46

Lesson Thirteen The Nature and Importance of Plants 49

Lesson Fourteen The Roots 52

Lesson Fifteen Plant Seed 58

Lesson Sixteen Time for Collecting Tree Seed 63

Lesson Seventeen Site of Nurseries 66

Lesson Eighteen Kinds of Fertilizers Used in 71

Nursery Practice 71

Lesson Nineteen Care of Seed Beds after Germination Begins…………（？）Lesson Twenty Forest Soils 78

Lesson Twenty-one Plant Ecology 84

Lesson Twenty-two Eucalypt Ecology 89

Lesson Twenty-three Loblolly Pine 96

Lesson Twenty-four Silviculture and Its Place in Forestry 102

Lesson Twenty-five Natural Forests 106

Lesson Twenty-Six Seedling Diseases 111

Lesson Twenty-seven Metamorphosis of Insects 116

Lesson Twenty-eight Selectivity of Insecticides 120

Lesson Twenty-nine Biological Control 124

Lesson Thirty Ecolog ical Habits of Forest Insects 130

Lesson Thirty-one A Letter from abroad 136

Lesson Thirty-two The Growth of Seeds 143

Lesson Thirty-three One Function of Roots 147

Lesson One General Discussion：A Dialogue 151

Reading Materials 151

Lesson Two Terminology Practice 152

Lesson Three Soil Chemicals：Reading 154

Lesson Four Terminology Practice 155

Lesson Five Nuts：A Dialogue 158

Lesson Six Farm Forestry：A Dialogue 159

Lesson Seven Forest Area and Composition 161

Lesson Eight The Main Forest Vegetation Belts around the World 162

Lesson Nine A Brief Account of China's Forestry 165

Lesson Ten Hot Snake 177

Lesson Eleven After the Fire 178

Lesson Twelve The Sacred Tree 179

Lesson Thirteen One Function of leaves 180

Lesson Fourteen Seed Dispersal：Reason 184

Ⅱ．Grammar 241

第一课 Ⅰ．英语的词类和句子组成部分；Ⅱ．人称代词；Ⅲ．疑问代词；Ⅳ．不定式；Ⅴ．一般现在时 241

第二课 Ⅰ．短语动词；Ⅱ．介词短语；Ⅲ．祈使句；Ⅳ．现在进行时Ⅴ．分数、小数和百分数 245

第三课 Ⅰ．一般将来时；Ⅱ．时刻表示法Ⅲ．动词的基本形式 249

第四课 Ⅰ．一般过去时；Ⅱ．形容词与副词的级 251

第五课 Ⅰ．现在完成时；Ⅱ．现在完成时与一般过去时的比较 255

第六课 Ⅰ．被动语态 261

第七课 Ⅰ．动词不定式 265

第八课 Ⅰ．动名词 269

第九课 Ⅰ．分词 271

第十课 Ⅰ．for＋名词（或代词宾格）＋不定式结构；Ⅱ．分词（续）；Ⅲ．构词法 274

第十一课 Ⅰ．定语从句；Ⅱ．同位语从句 278

第十二课 Ⅰ．定语从句（续）；Ⅱ．状语从句 282

第十三课 Ⅰ．句子的种类；Ⅱ．表语从句；Ⅲ．宾语从句 286

第十四课 Ⅰ．it的用法；Ⅱ．虚拟语气 289

第十五课 Ⅰ．过去进行时；Ⅱ．过去完成时 294

第十六课 Ⅰ．一般过去将来时；Ⅱ．现在完成进行时和过去完成进行时；Ⅲ．其它时态的用法 296

第十七课　Ⅰ．独立分词结构；Ⅱ．as的用法；Ⅲ．省略句 299

第十八课　Ⅰ．倒装句 302

第十九课　Ⅰ．时态呼应 304

第二十课　Ⅰ．独立成分 306