必修  第一册
  Unit 1 A new start
  Unit 2 Exploring English
  Unit 3 Family matters
  Unit 4 Friends forever
  Unit 5 Into the wild
  Unit 6 At one with nature
必修  第二册
  Unit 1 Food for thought
  Unit 2 Let's celebrate!
  Unit 3 On the move
  Unit 4 Stage and screen
  Unit 5 On the road
  Unit 6 Earth first
必修  第三册
  Unit 1 Knowing me, knowing you
  Unit 2 Making a difference
  Unit 3 The world of science
  Unit 4 Amazing art
  Unit 5 What an adventure!
  Unit 6 Disaster and hope
选择性必修  第一册
  Unit 1 Laugh out loud!
  Unit 2 Onwards and upwards
  Unit 3 Faster, higher, stronger
  Unit 4 Meeting the muse
  Unit 5 Revealing nature
  Unit 6 Nurturing nature
选择性必修  第二册
  Unit 1 Growing up
  Unit 2 Improving yourself
  Unit 3 Times change!
  Unit 4 Breaking boundaries
  Unit 5 A delicate world
  Unit 6 Survival
选择性必修  第三册
  Unit 1 Face values
  Unit 2 A life's work
  Unit 3 War and peace
  Unit 4 A glimpse of the future
  Unit 5 Learning from nature
  Unit 6 Nature in words
选择性必修  第四册
  Unit 1 Looking forwards
  Unit 2 Lessons in life
  Unit 3 The world meets China
  Unit 4 Everyday economics
  Unit 5 Into the unknown
  Unit 6 Space and beyond
课标外常考词汇
教材词汇索引