♠특징
Unit 1
1. Phonics : 동음자, igh, y, i-e, ie, 1,2,3 음절, au, aw

2. Vocabulary
①buffaloes, chaps, spurs, Gila monsters, horned toads, stampedes
②contagious, chickenpox, stethoscope, inflammation, wheelchair, prescription
③orchid, calligraphy, sesame noodles, chopsticks, soy sauce, scallion
④pampas, grazing, gauchos, manes, lasso, corral, bridles
⑤wisdom, sense, thought, idea, wise, knowledge, skills

3. Grammar
①서술문과 의문문
②감탄문, 명령문
③보통명사, 고유명사
④단수명사와 복수명사
⑤단수명사와 복수명사

Unit 2
1. Phonics : ar, 동음자, closed syllables, er, -or, ly, -y

2. Vocabulary
①scolded, whispered, grumbled, coazed, scratchy, bellowed
②possibilities, reverses, image, optical, illusions, prove, solution
③volcanoes, fossils, skeletons, seashells, palaster, ichthyosaur
④engineers, superstructure, framework, bedrock, cranes, contractor, hoists
⑤experiment, curious, patience, laboratory, informaiton, equipment

3. Grammar
①동작동사
②동사의 현재 및 과거시제
③be 동사
④본동사와 조동사
⑤연결동사

Unit 3
1. Phonics : un-, re-, open syllables, j/g, ge, dge, 연자, 묵음

2. Vocabulary
①complained, gasped, mutiny, conceited, perked
②tamales, masa, kneaded, dough, corn husks, spoonful
③drought, lightning, smoke, blazes, embers, columns, firestorm
④large, apprentices, weavers, dyers, spinning, loom, design
⑤bicuspid, yank, extractor, gauze, toothaches, dentine

3. Grammar
①주어와 술어
②형용사
③관사, 형용사
④명사 소유격
⑤대명사 주격, 목적격