八年级英语上册 Unit 3 Modern machines Language课件 牛津广州版 课件VIP免费

Unit 3 Modern machines The comparative and superlative of adjectives英语中有时需要对两者或多者进行比较，这时就需要用形容词的比较等级。比较等级分为： 原级 : cheap expensive 比较级 : cheaper more expensive 最高级 : cheapest the most expensive The dog is bigger than the mouse.The horse is the biggest of all.The boy is younger than the man.The baby is the youngest of the three.bigbiggerbiggestyoung youngeryoungest JimLi LeiTomLi Lei is taller than Tom.Jim is the tallest of all.￥ 30￥ 20￥ 10The yellow coat is cheaper than the purple one.The brown coat is the cheapest of the three. 形容词比较级和最高级的构成：单音节形容词的构成方法原级比较级最高级一般在词尾加 -er 或 -est tall taller tallest以字母 e 结尾的单词后加 -r 或 -st nice fine nicer finer nicest finest 以“辅音字母 +y”结尾的双音节词，先改 y 为 i,再加 -er 或 -estearlyheavy earlier heavier earliest heaviest规则变化 more usefulmorebeautifulthinnerbiggerhottermostusefulmostbeautifulthinnestbiggesthottestuseful beautiful多音节词 或少数双音节词 ，在词前加more 或 mostthinbighot重读闭音节词尾只有一个辅音字母时，应先 双写这个辅音字母，再加-er或-est 1. 形容词比较级和最高级的构成 ：lessfarther(further)oldereldermoreworsebetter例词不规则变化leastfarthestfurthestoldesteldestlittlefaroldmostmany/muchworstbad/illBestgood/well少数几个形容词的比较级和最高级的构成是不规则的。 cheap small old high nice safe happy heavy early easy big wet 写出下列形容词的比较级和最高级：important difficult angryfamous interesting excited goodill far little Fill in the blanks with the proper forms of the words given.1. My sister is _____ than Richard. (old)2. He has _____ homework to do than I do today. (much)3. Is football ____________ than volleyball? (exciting)4. The town is _______ than it used to be. (clean)5. I’m ________ than his brother, Jim. (cl...