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Unit4AtthefarmLet'slearn&Let'schantPartALearninggoals1.能够听、说、认读单词和词组tomato、potato、carrot、greenbean。2.能够熟练运用上述4个单词并运用句型”They’re…”描述蔬菜特征。Let'slearnpotatocarrottomatogreenbeansNewwordspotatocarrottomatogreenbeansAnswerthequestions1.Whataretheytalkingabout?_____________________________2.Howmanykindsofvegetablesinthepicture?_____________________________3.Thegreenbeansare_________andthepotatoesare__________.Theyaretalkingaboutvegetables.Theyarefourkindsofvegetables.solongbig单词精讲tomatoes,potatoes,carrots,greenbeanstomatoes是tomato的名词复数,即在tomato后面加es,类似的单词还有potato→potatoes(土豆)。名词分为可数名词和不可数名词两种。可数名词通常能一个一个的数,所以有单数和复数两种形式。不可数名词,顾名思义,不能一个一个的数,所以没有复数形式。可数名词单数变复数时,有一些是规则的,有规律可循;有一些是不规则的。(1)规则的名词复数的变化规律:一般情况下,直接在名词后面加s。dog→dogs(狗);window→windows(窗户)以s,x,sh,ch等结尾的名词,要在词尾加es。bus→buses(公共汽车);box→boxes(箱子)以“辅音字母+y”结尾的名词,要把y变成i,再加es。library→libraries(图书馆);strawberry→strawberries(草莓)以o结尾的名词大多数直接加s。zoo→zoos(动物园)(tomato,potato除外)以f或fe结尾的名词,变f或fe为v,再加es。knife→knives(小刀);leaf→leaves(叶子)(2)常见的不规则名词的复数形式:①单复数相同,例如:sheep→sheep(绵羊);fish→fish(鱼)②元音字母变化的,如:man→men(男人);woman→women(女人);foot→feet(脚);tooth→teeth(牙齿)③词尾发生变化的,如:child→children(孩子)Let'schantExercise一、单项选择。()1.Lookatthese!Arethese____________?A.tomatoesB.carrotC.potatos()2.—Whatarethese?—____________.A.Theseareapples.B.Theyaresheep.C.Theyarecarrot.AB二、根据句意按所给词的适当形式填空。1.Doyouliketheseyellow__________(西红柿)?2.Lookatthe____________(四季豆).Theyaresolong.3.__________(试吃一些)!They’regood.4.Ilove__________(吃)greenbeans.greenbeansTrysometoeattomatoesHomeworkCompare(比较)youwithyourclassmatesandwriteanessay.Usethewordsandsentencewelearnttoday.Tips:①tomato、potato、carrot、greenbeans②Thepotatoesarebig.
本文标题:人教PEP四年级下册英语课件PPTU4ALetslearnLetschant
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