Unit Two
Dialogue:Parting11
Text:Ants:The Interesting Life of a Social Insect11
Grammar:There be结构与have动词
Word Study:seem，feed，remind，prevent，put15
Exercises16
Reading Practice:The Donkey and the Camel19

Unit Three
Dialogue:Meeting a Friend21
Text:Good Manners21
Grammar:名词的单复数和名词所有格
Word Study:know，leave，show，mean，meet25
Exercises26
Reading Practice:The Languages and Customs of Different Countries28

Unit Four
Dialogue:Daily Life?30
Text:What Are You?30
Grammar:一般现在时
Word Study:want，help，go，give，get33
Exercises34
Reading Practice:Mr,Mrs,Miss and Ms37
[LM]Unit Five
Dialogue:Hobbies39
Text:Air Pollution39
Grammar:现在进行时和将来时
Word Study:raise，realize，send，throw，act43
Exercises44
Reading Practice:Oil Pollution47

Unit Six
Dialogue:Climate49
Text:The Sea49
Grammar:疑问句；反意疑问句
Word Study:cover,carry,sink,reach,hope53
Exercises54
Reading Practice:Half the World Is Water56
Unit Seven
Dialogue:How to Go to the Bus Stop?58
Text:My Uncle Tom58
Grammar:一般过去时
Word Study:matter，clean，allow，play，think62
Exercises64
Reading Practice:Marco Polo66
Unit Eight
Dialogue:Renew A Book68
Text:A Trip to the Moon68
Grammar:数词；冠词(1)
Word Study:like，let，run，come，prefer73
Exercises74
Reading Practice:Life on the Moon76
Unit Nine
Dialogue:Register A Letter78
Text:Coffee and Tea78
Grammar:被动语态
Word Study:add，make，prepare，serve，try83
Exercises84
Reading Practice:Fastfood Restaurants in the United States87

Unit Ten
Dialogue:Open an Account89
Text:Medicine in the Future89
Grammar:现在完成时
Word Study:change，live，stop，believe，become93
Exercises95
Reading Practice:The Future Problems97
Unit Eleven
Dialogue:Arts and Crafts Counter99
Text:Buying on the Installment Plan99
Grammar:介词(1)
Word Study:plan，fail，remain，result，last103
Exercises104
Reading Practice:Installment Buying in the U.S.107
Unit Twelve
Dialogue:Seeing A Doctor109
Text:New Year's Celebration109
Grammar:形容词和副词的比较级与最高级
Word Study:measure，celebrate，observe，include，gather114
Exercises115
Reading Practice:Christmas118
附录1基本词汇120
附录2总词汇表129