CONTENTS 1
Lesson One Our Laboratory 1
Lesson Two Electricity 6
Grammar 句子成份 11
Lesson Three Electronics 20
Grammar 五种基本句型 25
Lesson Four Electric Circuits 30
Lesson Five China'S Electronic Industry 35
Grammar 动词时态 41
Lesson Six Voltage，Current and Resistance 57
Grammar 被动语态 63
Lesson Seven Microwaves 67
Lesson Eight Resistance 72
Grammar 形容词、副词的比较级和最高级 76
Lesson Nine Energy 82
Grammar 动词不定式 86
Lesson Ten Semi-Conductors 92
Grammar 动名词 97
Lesson Eleven Direct Current and Alternating Current 102
LessonTwelve Direct Current and Alternating Current（Continued） 107
Lesson Thirteen Transformers 113
Grammar 分词（一） 117
Lesson Fourteen Transistors 124
Lesson Fifteen Transistors（Continued） 129
Lesson Sixteen Electronic Computers 134
Grammar 名词性从句 140
Lesson Seventeen Cassettes 145
Lesson Eighteen Electric Motors 150
Grammar 定语从句 155
Lesson Nineteen Multimeters 162
Lesson Twenty Fuses 168
Grammar 状语从句 173
APPENDIX 1 Vocabulary 179
APPENDIX 2 Key to the exercises （Text） 200
APPENDIX 3 Key to the exercises （Grammar） 233
APPENDIX 4 课文参考译文 253