CONTENTS
LESSONONE
Text: Australia and the United States:
A Comparison
Dialogue
Grammar: 句子类型 (Types of Sentences)
Word Study: have, begin
Exercises
LESSONTWO
Text: How Plants and Animals Help Each
Other
Dialogue
Grammar: 状语从句(The Adverbial Clause) l
Word Study: come, go
Exercises
LESSONTHREE
Text: Can a Computer Think?
Dialogue
Grammar: 形容词和副词的级（The Degrees of Com-
parison of the Adjective and the Adverb)
Word Study; make think
Exercises
LESSONFOUR
Text: Television: Blessing or Curse
Dialogue
Grammar: I 动词非谓语形式(The Non-finite
Forms of the Verb)
Ⅱ 动词不定式(The Infinitive) I
Word Study: talk get
Exercises
LESSON FlVE
Text: Polar Bears
Dialogue
Grammar: 定语从句 (The Attributive Clause) I
Word Study: see meet
Exercises
LESSON SlX
Text: The Museum of Failures
Dialogue
Grammar: 宾语从句 (The Object Clause)
Word Study: find play
Exercises
Revision Examination (Lessons l-6)
LESSON SEVEN
Text: The Maid
Dialogue
Grammar: I 过去进行时 （The Past Continuous Tense)
Ⅱ 一般过去将来时 (The Past Future
Indefinite Tense)
Word Study: remember want
Exercises
LESSON ElGHT
Text: The Yard Worker
Dialogue
Grammar: I 现在完成时( The Present Perfect Tense)
Ⅱ 过去完成时 ( The Past Perfect Tense)
Word Study: help put
LESSON NlNE
Text: Keeping Fit
Dialogue
Grammar: I 主语从句(The Subject Clause)
Ⅱ 表语从句( The Predicate Clause)
Ⅲ 同位语从句 (The Appositive Clause)
Word Study: spend become
Exercises
LESSON TEN
Text: American Taxes
Dialogue
Grammar: 被动语态(The Passive Voice) Ⅱ
Word Study: feel pay
Exercises
LESSON ELEVEN
Text: The Unicorn in the Garden
Dialogue
Grammar: 分词（The Participle) I
Word Study: look say
Exercises
LESSON TWELVE
Text: A Winter to Remember
Dialogue
Grammar: 动名词(The Gerund) I
Word Study: buy keep
Exercises
Revision Examination (Lessons 7--12)
Supplementary Reading
1 Young People and Older People
2 The Coconut Tree
3 Man Has a Big Brain
4 Advertising and Its Value
5 Everyone Has a Daily Energy Cycle
6 Ginseng
7 Bridge Builder
8 Doing His Job
9 Living a Long Life
10 Plastic Poison
11 The Midnight Visitor
12 Clean Your Room
Vocabulary (词汇表)
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