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1、Unit 4 Our WorldTopic 1 Plants and animals 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 countrysid
2、e?,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 th
3、inner 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。,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: talltallertallest2 以e 结尾的单词去e加er/est: widewiderwidest3 以辅音字母加y结尾的单词，把y改成i, 再加er/est: busybusierbus
4、iest4 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 : bigbiggerbiggest (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。,thinner,thinnest,uglier,ugliest,fatter,taller,tallest,braver,bravest,fattest,Act as different animals on the farm to continue the conversation, using comparative and supe
5、rlative degrees of adjectives in the table.,Pair work,countryside,The air is fresh.,The sky is blue.,The trees are green.,The river is clear.,Its 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.,Its noisy in the city
6、.,The air in the countryside is _The sky in the countryside is _The river in the countryside is _The trees in the countryside are _ than those in the city. Its _ in the countryside than in the city.,than that in the city.,greener,quieter,fresher,bluer,clearer,Where does Wang Wei like to live better,
7、 a countryside or a city?,（影片2）,Listen and fill in the blanks with the correct words according to 1a.How does Wang Wei think of the countryside?What about Michael? Wang Wei goes there for his summer vacation every year.,Wang Wei likes the countryside very much. He thinks the air is _, the sky is _ a
8、nd there are also _ trees and _ rivers there.,fresher,bluer,greener,clearer,quieter,Michael thinks it is _, too. And people can enjoy the beauties of nature there.,（录音1）,（影片3）,Make a survey in groups. Find out how many students like countrysides and how many students like cities.,Group work,Summary,
9、1. The comparative and superlative degrees of adjective. 形容词比较级，最高级的规则变化及用法。（-er/-est）2. Talking about animals and describing nature.,Homework,Draw a picture of your hometown and write a passage about it, using adjectives and their comparative and superlative degrees.,Thanks for listening! Goodbye!,