Unit 4. Our planet

• Chủ đề:
• Vocabulary: Weather
• Grammar: Comparison
• Listening: Eyewitness
• Grammar: Superlative adjectives, too and enough
• Word Skills: Phrasal verbs
• Reading: Gliders in the storm
• Speaking: Photo comparison
• Writing: An article
• Culture: Extreme weather
• Review Unit 4
• Grammar Builder
• Grammar Reference
• A. Phonetics
• B. Vocabulary and Grammar
• C. Reading and Writing