人教版四下英语Unit4__A__Let’s__learn教学课件.ppt

2014年新版PEP小学英语四年级下册,Unit4Atthefarm,ALetslearn&letschant,本课时教学目标,一、听、说、认读单词tomato，potato，carrot，greenbean及其复数形式。二、运用句型Theyre描述蔬菜特征。,Singasong,Appleisredandround.,（单击图片，播放歌曲。）,Guess:Whatsthis?Itsred,itsround,butitisntapple.,tomato,Task1:学单词,tomato,es,Doyouknow?,Theyareredandround.But,applesareakindoffruit.Tomatoesareakindofvegetables.,Task2:Whatkindofvegetablesdoyouknow?,学单词,carrot,Theyresobig.,s,学单词,potato,Theyresobig.,es,学单词,greenbean,Theyresolong.,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-monthsstomach-stomachs3)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),Letsreadtogether!,（单击图片，播放动画）,Letschanttogether!,（单击图片，播放动画）,Homework,:一星级:听录音，会读单词和句子；:二星级:单词、句子会写会读；:三星级:能够在情景中运用句型Theyre描述蔬菜特征。(你可以根据自己的实际情况任选一个做),