Unit One Warming-up Lessons 1
Lesson One 1
Text A 2
Text B 4
Grammar Focus:The Tense and The Simple Present Tense 7
Lesson Two 9
Text A 11
Text B 12
Grammar Focus:The Simple Past Tense 15
Lesson Three 17
Text A 18
Text B 20
Grammar Focus:The Simple Future Tense and The Past Future Tense 23
Lesson Four 25
Text A 26
Text B 27
Grammar Focus:The Present Continuous Tense and The Past Continuous Tense 30
Lesson Five 32
Text A 33
Text B 36
Grammar Focus:The Present Perfect Tense and The Past Perfect Tense 40
Unit Two Fundamental Computer and Network Knowledge 46
Lesson Six 46
Text A 46
Text B 47
Grammar Focus:The Passive Voice 51
Lesson Seven 55
Text A 55
Text B 58
Grammar Focus:The Attributive Clause 62
Lesson Eight 66
Text A 66
Text B 68
Grammar Focus:The Adverbial Clause 72
Lesson Nine 75
Text A 75
Text B 77
Grammar Focus:The Object Clause 80
Lesson Ten 83
Text A 83
Text B 86
Grammar Focus:The Subject Clause 89
Lesson Eleven 91
Text A 91
Text B 93
Grammar Focus:The Predictive Clause 96
Revision(1) 97
Lesson Twelve 100
Text A 100
Text B 102
Grammar Focus:The Direct Speech and The Indirect Speech 105
Lesson Thirteen 108
Text A 108
Text B 109
Grammar Focus:The Subjunctive Mood 112
Lesson Fourteen 116
Text A 116
Text B 117
Grammar Focus:The Inversion 120
Lesson Fifteen 122
Text A 122
Text B 124
Grammar Focus:The Appositive and The Parenthesis 127
Revision(2) 129
Unit Three Software Knowledge and Computer Application 131
Lesson Sixteen 131
Text 131
Grammar Focus:The Present Participle 136
Lesson Seventeen 138
Text 138
Grammar Focus:The Past Participle 143
Lesson Eighteen 144
Text 144
Grammar Focus:The Gerund 149
Lesson Nineteen 151
Text 151
Grammar Focus:The Infinitive 156
Lesson Twenty 160
Text 160
Grammar Focus:The Auxiliary and Modal Verb 163
Lesson Twenty-one 165
Text 165
Grammar Focus:Word Formation—Prefix 169
Lesson Twenty-two 173
Text 173
Grammar Focus:Word Formation—Suffix 177
Vocabulary List 词汇表 180
Appendix 1 基本语音知识 204
Appendix 2 基本语法知识 207
Appendix 3 不规则动词的过去式和过去分词 211