八上U4T1SA 公开课PPT课件.ppt

Unit 4 Our WorldToals are important to us. Section A  What can we see in the countryside? cow countryside n. 农村，乡下 horse hen sheep some sheep What can we see in the countryside? goose some geese What can we see in the countryside? mouse some mice What can we see in the countryside? Look, listen and say (影片1) small big The mice are smaller than the hens. The hens are smaller than the geese. The mice are the smallest of all. < < > > The hens are bigger than the mice. The geese are bigger than the hens. The geese are the biggest of all. small big thin The ducks are a little thinner than the geese. < The ducks are much thinner than the pigs. < thin adj. 瘦的；薄的；稀的 单音节及部分双音节形容词比较级（- er）和最高级（- est）的规则变化。 Adjective strong tall nice brave comparative stronger nicer superlative strongest nicest Adjective big fat thin lazy ugly comparative bigger lazier superlative biggest laziest 下列形容词比较级和最高级变化有什么规律？ 单音节及部分双音节形容词比较级（- er）和最高级（- est）的规则变化。 1 一般在词尾直接加er/est: tall—taller—tallest 2 以e 结尾的单词去e加er/est: wide—wider—widest 3 以辅音字母加y结尾的单词，把y改成i, 再加er/est: busy—busier—busiest 4 以重读闭音节结尾，且末尾只有一个辅音字母的单 词，双写末尾的辅音字母，再加er/est : big—bigger—biggest (fat, thin, red, hot) 单音节及部分双音节形容词比较级（- er）和最高级（- est）的规则变化。 Adjective strong tall nice brave comparative stronger nicer superlative strongest nicest Adjective big fat thin lazy ugly comparative bigger lazier superlative biggest laziest thinner thinnest uglier ugliest fatter taller tallest braver bravest fattest Act as different animals on the farm to continue the conversation, using comparative and superlative degrees of adjectives in the table. countryside The air is fresh. The sky is blue. The trees are green. The river is clear. It’s quiet in the countryside. The air is dirty. The river is dirty. city The buildings are tall. The roads are wide. The traffic is busy. It’s noisy in the city. The air in the countryside is