Unit 1 Lucky Number (숫자•문화) _Grammar: This is why ~ Unit 2 Kitten Loves Gorilla (동물) _Grammar: like의 의미 (좋아하다 / ~처럼) Unit 3 How Animals Survive (동물의 생존) _Grammar: 접속사 that Unit 4 Crocodile’s Best Friend (공생 관계) _Grammar: between / out (of) / into Unit 5 Van Gogh’s Life (위인) _Grammar: How + 형용사! Unit 6 Chocolate Helps Your Memory (감각•기억력) _Grammar: help + A + 동사원형 Unit 7 My Dog Loves Dancing (애완동물) _Grammar: must be (강한 추측)
