Irregular verbs

封面/前言/目录
Unit 1 Spring is coming!
　　Lesson 1 Planting trees
　　Lesson 2 It's getting warmer!
　　Lesson 3 The Spring City
　　Lesson 4 Stories about spring
　　Lesson 5 Jeremy's observation diary
　　The 24 solar terms
Unit 2 Safety
　　Lesson 1 Be careful!
　　Lesson 2 Safety education
　　Lesson 3 My helmet saved my life!
　　Lesson 4 An accident on the street
　　Lesson 5 Home safety
　　Being cybersafe
Unit 3 Amazing sports
　　Lesson 1 What's your favourite sport?
　　Lesson 2 National sport
　　Lesson 3 Dream team
　　Lesson 4 Never giving up
　　Lesson 5 Classroom Olympics
　　The Olympic Games
Unit 4 Rules make for a better life!
　　Lesson 1 Signs in public places
　　Lesson 2 Traffic laws help!
　　Lesson 3 Spoken and unspoken rules
　　Lesson 4 Personal boundaries
　　Lesson 5 Public rules
　　Funny international laws
Unit 5 Great inventions
　　Lesson 1 Inventions are great!
　　Lesson 2 Ways of travelling
　　Lesson 3 Computers and the internet
　　Lesson 4 Thank you, Mr Pasteur!
　　Lesson 5 Refrigerator timeline
　　Great inventions of ancient China
Unit 6 I love literature!
　　Lesson 1 Exploring literature
　　Lesson 2 The woodcutter fable
　　Lesson 3 The Giant
　　Lesson 4 Writing a poem
　　Lesson 5 One thousand dollars
　　Return the jade intact to Zhao
Unit 7 The value of money
　　Lesson 1 Money in history
　　Lesson 2 What do you do with money?
　　Lesson 3 Money talks
　　Lesson 4 Needs or wants?
　　Lesson 5 Managing your money
　　Money: A fair medium of exchange
Unit 8 Natural disasters
　　Lesson 1 Disaster safety tips
　　Lesson 2 Staying safe in an earthquake
　　Lesson 3 Secondary disasters
　　Lesson 4 Natural disasters are dangerous!
　　Lesson 5 Let's do an escape drill!
　　Measures to prevent floods
Appendices
　　Wrap it up!
　　Vocabulary (I)
　　Vocabulary (II)
　　List of proper names
　　Structures and expressions
　　Irregular verbs
　　Grammar