1、Unit4 At the farmA Lets learn lets chant本课时教学目标一、听、说、认读单词tomato，potato，carrot，green bean及其复数形式。二、运用句型Theyre描述蔬菜特征。Sing a songApple is red and round.（单击图片，播放歌曲。）Guess:Whats this?Its red,its round,but it isnt apple.tomatoTask1:学单词tomatoesDo you know?They are red and round.But,apples are a kind of frui
2、t.Tomatoes are a kind of vegetables.Task2:What kind of vegetables do you know?学单词carrotTheyre so big.s学单词potatoTheyre so big.es学单词green beanTheyre so long.es名词单数变复数规则规则变化1）一般情况下加-s如book-books（书）desk-desks（书桌）2）以s,x,ch,sh结尾加-es 如box-boxes（盒子）bus-buses(公共汽车)注意以 th 结尾加-s,month-months stomach-stomachs 3
3、)以辅音字母+结尾，变y为i再加-es如city-cities(城市)country-countries(国家)注意以元音+y，直接加s。如：day-days(天)，boy-boys(男孩)名词单数变复数规则4)以f或fe结尾，复数变f或 fe 为v再加-es 如knife-knives(书),half-halves(一半)(thief,wife,life,shelf,knife,leaf,self,half,wolf)注意有少数词后直接加s，如roof-roofs(屋顶)5)以o结尾分2类(1)o结尾的加-es 如tomato-tomatoes(西红杮)hero-heroes（英雄）potato-potatoes(土豆)(2)o结尾名词的加-s 如piano-pianos(钢琴),zoo-zoos(动物园)photo-photos(照片),kangaroo-kangaroos(袋鼠)kilo-kilos(千克)注意zero 两种方式都可：zero-zeros或 zeroes(零)Lets read together!Lets chant together!
