4b橡皮和2b橡皮有什么区别_4B Unit 4 Buying fruit（Period1）

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教材分析：
本单元主要是学习句子what are these/those? they"re...。book4a中已经出现的句式，还可以通过单复数形式比较出它们之间的区别。
本单元主要出现的水果类单词，除grapes是第一次出现以外，其余七种均在book3a第三单元中出现过。本单元出现的是这些单词的复数字形式，涉及到词形、读音的变化，是教学中的难点。
与本单元所出现的水果类单词紧密结合的是在商店里购物的常用语can i help you? how many kilos?等。在教学中教师要注意创设购物情景，让学生熟练自如地运用这些购物的基本用语。
一． teaching contents：
part a: look，read and learn
part b: look and read
二． teaching aims：
1、听得懂、会说、会读和会拼写单词apples, oranges, bananas, peaches, grapes, watermelons, pears, some。
2、听得懂、会说句型what are these/those? how many kilos?
3、能正确理解和掌握对话内容，并能用正确的语音、语调朗读并表演对话。
4、能运用所学句型编演对话，通过合作表演培养团结协作的精神，增进师生间的情感交流。
三．teaching focal points:
aim 1﹠2
四．teaching difficult points:
    aim 1﹠2
五．teaching aids：
1、教具准备：单词图片及单词卡片，有关水果实物，录音机、磁带。
2、学生准备：每个人带些水果。
六．teaching procedures：
step1：warm-up
1、greetings(师生之间常规问好)
t：good morning, boys and girls. nice to see you. how are you?
2、sing a song： they sing happily
    i love apple
3、free talk
step2：presentation and practice
1. learn: fruit
the way: cai
2. revise: apple-apples, orange-oranges, mango-mangoes, watermelon-watermelons, pear-pears, peach-peaches, banana-bananas
  the way: 实物
①t: look, what"s this in english? oh, it"s an apple. 
and what are these in english? oh, they"re apples. do you like apples?
ss：yes.
t： now read the word "apples" after me.
ss：apples，a-p-p-l-e-s, apples.
t：very good.
② the same way to teach: oranges, bananas, peaches, watermelons, pears。
3. learn: grape-grapes
  the way: guessing game
① t: what fruit do you like?
s1: ….
t-s2-s3
t: do you know what i like? guess!
s1: …(grapes)
②read and spell
4. play a game：hot and cold
5. learn: what are these? they’re…
  the way: cai
①t: are you hot?
s1: yes, i am.
t: here are some… for you.
s1: thank you.
t: let’s go to the fruit garden to see what we can buy.
  look, here is an old man. what’s his job?
s: he’s a farmer.
t: right. what did he say? (welcome to my fruit garden. don’t climb trees.)..
  what are these on the tree?
s: they’re grapes.
②read: these, these, what are these?
   grapes, grapes, they’re grapes.
③practice and check
6. learn: what are those? they’re…
 the same way as the above
7. practice: guessing game12
8. learn: how many kilos?  …s , please
  the way: 承上
①t: what are those?
s1: they’re…
t: i’d like some…, please.
s1: how many kilos?
t: … kilos, please
② read
③ practice and check
step3：text
1.  who’s the woman? where’s she?
2.  listen to the tape and answer the question
3.  read by roles
4.  act it out
step4：class work
fill in the blanks.
1. this is a   .  these are    . 
2. that is a   . those are    .
3. miss li wants(想要) to buy   kilos of pears.
4. miss li wants(想要) to buy   kilos of grapes.
step5：home work
homework:
1.   copy the new words twice each other, and try to remember them.
2.   part c, choose two pictures , write down the sentences.
3.   make out a new chant to describe your or your father’s and mother’s favorite fruit. 
bb design
    unit 4 buying fruit
    a: what are these/those? 
b: they’re…
    a: how many kilos?
 b: …s, please.
评课及反思：
1. 本课单复数的处理不够到位，水果单词孩子们虽在3a学过，但孩子对于复数的发音掌握不准，还是需要一步步教授，尤其可以让孩子归纳基本发音规律。
2. 重点没有突出，本课主要句型“what are these/those? they’re…”,其问句是个难点，孩子们回答得多，问的少，在游戏环节可以放手让孩子们自由选择2图一问一答，要不然检查的人数太少，操练的机会较少。
3. 情景的选择不统一，开始给孩子们创设的环境呵书上的情境吻合，，但在教授“how many kilos?”时，换了个去超市的购物情境，和之前的果园买水果不统一，应该一条主线贯穿这个教学。
4. 学生反馈阶段的知识输出量较小，在对课文情境拓展之后，可以把全班分成“toy shop” “clothes shop” “stationary shop” ect. 放手，让孩子自由购物，锻炼孩子的语言运用能力。另外在教授水果的同时，可以加上简单的形容词如：sweet, red, crispy, juicy…
4b unit 4 buying fruit（period1） 来自。 12

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