农科综合英语 第2册PDF电子书下载

Lesson 17 1

Text A Holipay in the Country 1

Appendix 3 Vocabu ary 3

Conversation Life and Work on the Farm 7

Word Study By 9

Grammar 1．限定动词和非限定动词 11

2．不定式的形式和特征 11

3．不定式的用法 12

4．只用to代表的不定式 16

Supplementary Reading （A）Little John at the Farm 22

（B）Machines on the Farm 22

Lesson 18 26

Text Tree-Our Best Priends 26

Conversation Do Trees Sleep？ 35

Word Study Fall 38

Grammar 1．不带to的不定式 39

2．“for+名词或代词宾格+不定式”的结构 41

3．What，Which，Who，Whether，How，Where或When+不定式 42

4．Too+形容词或副词+不定式 42

5．以介词结尾的不定式短语 43

Supplementary Readiny A Tale of a Giant Tree 48

Lesson 19 52

Text Butterflies 52

Conversation Farmers Enemies 56

Word Study Look 59

Grammar 1．进行不定式 60

2．完成不定式 61

3．完成进行不定式 62

4．不定式的被动态 62

5．形容词和副词的比较等级 65

Supplementary Reading （A）Insects 74

（B）Entomology 75

Text The Greatest Evolutionist 79

Lesson 20 79

Conversation Going to a Bookstore 83

Word Study Bring 89

Grammar 1．Be+不定式 91

2．形容词或副词+Enough+不定式 93

3．In Order To和So As To 93

4．So…As To和Such（…）As To 94

5．后跟不定式作宾语的动词 95

6．“分裂不定式” 95

Supplementary Reading Darwin on the Beagle 103

Lesson 21 106

Text Two Poems 106

Conversation Little and Small 113

Word Study In（1） 115

Supplementary Reading （A）Spring 118

（B）The Wind 119

Review Exercises（Lesson17一Lesson20） 122

Lesson 22 128

Text The Yellow River 128

Conversation Swimming in the Canal 139

Word Study Break 142

Grammar 1．分词的形式和特征 144

2．分词的用法 145

Supplementary Reading The Importance of Rivers 157

Lesson 23 161

Text Three Fables 161

1．The Fox and the Grapes 161

2．The Shepherd Boy 162

3．The Swallow and the Other Birds 162

Conversation Fables Teach Lessons 171

Word Study Give 174

Grammar 1．简单现在分词的被动态 176

2．完成的现在分词的主动态 176

3．完成的现在分词的被动态和过去分词 177

4．That，Those和One，Ones用作名词的替代词 178

Supplementary Reading The Treasure in the Orchard 186

Lesson 24 192

Text The Soft Machine 192

Conversation Seeing the Doctor 195

Word Study Carry 198

Grammar 1．分词和不定式某些用法的比较 200

2．数词 201

Supplementary Reading Water:for Life 211

Lesson 25 214

Text Living Organisms and Man 214

Conversation Asking for Advice on Rose-Growing 222

Word Study In（2） 224

Grammar 1．独立主格分词结构 226

2．副词的分类 228

3．副词的位置 229

（B）The Animals Called Mammals 233

Supplementary Reading （A）Where Plants Grew 237

Lesson 26 243

Text Louis Pasteur 243

Conversation Pasteur and Germs 252

Word Study Turn 254

Supplementary Reading Themas Alva Edison 259

Revlew Fxercises（Lesson 22一Lesson 25） 262

Lesson 27 266

Text Madame Curie 266

Conversation China Daily 274

Word Study Take 276

Grammar 1．动名词的形式和特征 278

2．动名词的用法 279

3．前面带逻辑主语的动名词结构 281

Supplementary Reading The Curie Family 287

Lesson 28 291

Text Memory 291

Conversation Study and Exercise 296

Word Study As 297

Grammar 1．完成动名词 299

2．动名词的被动态 300

3．名词化动名词 301

Supplementary Reading （A）Seasons and Human Intelligencc 306

（B）Asking for Trouble 307

Lesson 29 310

Text A Letter o? Reading（Partl） 310

Conversation Posting Letters and Parcels 317

Grammar 1．动名词和现在分词作定语的区别 322

2．后跟动名词作宾语的动词 323

3．动名词和不定式的比较 324

Word Study For 330

Supplementary Reading How to Write Letter in English（Part 1） 333

Lesson 30 337

Text A Letter on Reading （Part 2） 337

Conversation The Best Ways to Study English 346

Word Study Go 349

Supplementary Reading How to write Letters in English（Part 2） 355

General Review Exercises 358

Appendix 1 An Alphabetical List of Irragu ar Verbs 369

Appendix 2 Index 377