Unit 1 Linking in English 1.1 Understanding Vowels & Consonants for Linking 1.2 Linking Consonant to Vowel 1.3 Linking Vowel to Vowel 1.4 Linking Consonant and Consonant 1.5 Combinging T,D,S,or Z+Y 1.6 Read for Fun 1.7 Songs and Poems Unit 2 Rhythm and Intonation 2.1 Rhythm of English Speech 2.2 Types of Intonation in English 2.3 Tone in English 2.4 Read for Fun 2.5 Songs and Poems Unit 3 Childhood and Grown up 3.1 Conversation 3.2 Listen and Talk 3.3 Read and Explore 3.4 Write and Produce Unit 4 Transportation 4.1 Conversation 4.2 Listen and Talk 4.3 Read and Explore 4.4 Write and Produce Review I(Unit 1—Unit 4) Part Ⅰ Listening Comprehension Part Ⅱ Structure and vocabulary Part Ⅲ Reading Comprehension Unit 5 Housing 5.1 Conversation 5.2 Listen and Talk 5.3 Read and Explore 5.4 Write and Produce Unit 6 Environment 6.1 Conversation 6.2 Listen and Talk 6.3 Read and Explore 6.4 Write and Produce Unit 7 Enterainment Unit 8 Fashion Review Ⅱ(Unit 5—Unit 8) Unit 9 Science Unit 10 Friendship Unit 11 Disease Unit 12 Shopping Review Ⅲ(Unit 9—Unit 12) Unit 13 History and Stories Unit 14 Music and Art Unit 15 Communication Unit 16 All Around the World Review Ⅳ(Unit 13—Unit 16)