Word Study:Ⅰ．by 1
Ⅱ．round,around 1
Grammar:动词不定式 1
CONTENTS 1
Text:Earth's Man-made Moons 1
Lesson One 1
Text:Cars for Tomorrow 2
Text:A Story about Edison's Double Transmitter 2
Word Study:Ⅰ．构词 2
Ⅱ．stop 2
Grammar:动词不定式 2
Grammar:被动语态 2
Ⅱ．one 2
Word Study:Ⅰ．can,may,must 2
Grammar:被动语态 3
Ⅱ．介词to的用法 3
Word Study:Ⅰ．构词法 3
Text:The Radiant Energy from the Sun 3
Grammar:Ⅰ．一般现在时（复习） 4
Lesson Two 1 4
Text:A College Student 4
Word Study:do 4
Ⅱ．现在进行时 4
Text:Comrade Zhou Enlai at Nankai 26
Word Study:in,at,on 26
Grammar:一般过去时（复习） 26
Lesson Three 26
Grammar:？ 41
Lesson Four 41
Ⅱ．write,teach,read,tell,show,give 41
Word Study:Ⅰ．for 41
Text:A Letter from London 41
Text:Water Pollution 58
Word Study:some,any 58
Lesson Five 58
Ⅱ．过去进行时和将来进行时 58
Grammar:Ⅰ．冠词 58
Ⅱ．want,begin,learn等 77
Grammar: 被动语态（1）：一般时态的被动语态 77
Lesson Six 77
Word Study:Ⅰ．take 77
Text:Galileo and Clocks 77
Ⅰ．带有情态动词的被动语态 94
Ⅱ．进行时态的被动语态 94
Lesson Seven 94
Ⅰ．现在完成时的被动语态 112
Ⅱ．带有双宾语的动词的被动语态 112
Revision Exercises（Lessons 1—7） 112
Lesson Eight 119
Grammar:介词和介词短语 137
Ⅲ．in,on,off,up 137
Ⅱ．of 137
Word Study:Ⅰstill 137
Text:Helicopters 137
Lesson Nine 137
Text:Stars 159
Grammar:形容词、副词的级 159
Ⅳ．more,most 159
Ⅲ．many,much 159
Ⅱ．be,become,look,seem,appear 159
Word Study:Ⅰ．构词 159
Lesson Ten 159
Lesson Eleven 176
Revision Exercises（Lessons 8—11） 195
Lesson Twelve 202
Ⅱ．宾语从句 223
Lesson Thirteen 223
Ⅳ．表语从句 223
Ⅲ．主语从句 223
Text:The Life in the Sea 223
Grammar:Ⅰ．主从复合句 223
Ⅲ．what 223
Ⅱ．below,beneath,under 223
Word Study:Ⅰ．构词 223
Lesson Fourteen 241
Grammar:状语从句 241
Word Study:Ⅰ．few;a few;little,a little 241
Ⅱ．get 241
Text:Gases as Heat Insulators 241
Text:Molecules and Atoms 261
Word Study:Ⅰ．构词 261
Ⅱ．make 261
Ⅲ．with 261
Grammar:定语从句 261
Lesson Fifteen 261
Revision Exercises（Lessons 12—15） 278
Word Study:Ⅰ．ability,tendency,chance 278
Text:The Laser 278
Appendixes: 285
Classroom English 285
International Phonetic Symbols 287
Rules of Pronunciation 289
Irregular Verbs 297
Numerals 300
Vocabulary 1 302
Vocabulary 2 336