英语人教版三年级下册Unit 3 B Let’s learn.docx

Unit 3 At the zoo B Lets learn学案教学目标：1、能听、说、认读bigsmalllongshort四个形容词，了解short的另一含义2、激发学生充分动用已学过的知识，进行发散性认识。3、学习句型look at the -,.it has -,并能进行创编，成一个新的chant教学重点：1、听、说、认读几个形容词small, big, long, short.2、运用所学过的知识，学说带有这些形容词的语句子It has -.教学难点：1、单词small 中 l 的发音，舌头要上卷。2、掌握描述动物特征时单复数的区分。教学过程：1、Warm upT : Nice to meet you . How are you ?T : Look at me.I have a book . Ss : Me too .T : Look, I have 2 eyes . Ss : Me too.T : Look, I have2 arms / a body Ss : Me too .2、呈现新课 (presentation)T:We have 1 head,two eyes,arms.But I have a friend .He is different. Now lets enjoy a song.（1）教学big T（出示一只大盒子）: Today, I prepare a gift for you . Look,whats this? Ss: Its a box. T: Yes, its a box, its a big box, this box is big.出示单词卡，学习big. B b b bigCAI(出示许多大的物品，让学生练说)a big _ Look at _.It is big. _is big. (2)教学smallT: Look at the big box. There is something in it .Please, guess whats in it? Ss：. T: Look, its a box, too. Its a small box. The box is small.出示单词卡，学习small small small操练： a small _ Look at _.It is small._is small. (3)CAI: Can you say?_is big ,_is small(4)教学long and shortT: Whats in the small box .Let me open it ad see.Oh,its a ruler. Its a short ruler. The ruler is short.出示单词卡，学习short sh or t short出示单词卡，学习long long long出示一对铅笔，两束头发让他们作出变化shortlong longshort(5)描述短的钢笔，长的铅笔，并编成一个chantshort, short pen ,the pen is short, look at the pen ,it is shortlong, long pencil ,the pencil is long, look at the pencil,it is long（6）单词操练听录音，跟读用动作表演: 看教师做师生一起做Lets do (Big, big, big, make your eyes big. Small,small, small, make your eyes small. Long, long, long, make your arms long.Short ,short, short, short, make your arms long.) 教师说，学生做找出反义词:教师向学生介绍这两对反义词（结合板书）师生通过动作来表演反义词CAI连线3、拓展与延伸（1） 教学单词tallCAI：以short的一封信引入，学习tall,并在班级中找出Who is short? Who is tall?Let,s do (Tall, tall, tall, make yourself tall. Short, short, short, make