PEP小学英语四年级(下)第4单元第2课时学案
Unit 4 At the farm
A Let’s learn
【学习目标】
1.能够听、说、认读本课时主要单词及其复数形式： tomatoes, potatoes, carrots,
greens beans.
2.能够熟练运用句型What are these They are…进行询问并作出回答。
【重点难点】
重点：本课时需要重点掌握农场上常见的蔬菜的名称及其复数形式的变化。
难点：tomato, potato复数形式的变化。
【新知预习】给下列图片选择正确的单词或词组。
tomato B.green beans C. carrot D. onion E. potato
1 . 2. 3. 4. 5.
( ) ( ) ( ) ( ) ( )
【课堂探究】
1.以“o”结尾的名词变复数
以”o”结尾的名词变复数，有时加-es,有时加-s。那么哪些名词后加-es，哪些名词后加-s呢？
(1)一般来说，有生命的名词后加-es。
potato---potatoes土豆
tomato---tomatoes西红柿
hero---heroes英雄
(2)无生命的名词后加-s。
photo---photos照片
piano---pianos钢琴
zoo---zoos动物园
【针对练习】写出下列单词的复数形式。
(1) potato_________
(2) piano__________
(3) zoo___________
(4) tomato_________
(5) photo_________
2. what are these 这些是什么？
此句是what引导的特殊疑问句，用于询问事物的名称。these用来指代复数名词。答语是：They are +事物名称的复数。
例：---What are these 这些是什么？ ---They are potatoes.它们是土豆。
【针对练习】
---What are these ---They are_____.
tomato B. tomatoes C. tomatos
---What are these ---___________.
A.They are carrots. B. It’s a carrot. C.They are carrot.
【达标练习】
I. 读句子，选择相应的图片。
B. C. D. E.
( ) 1.T hey are brown and big.
( )2.They are green and long.
( )3.They are orange and yum.
( )4. They are red and round.
( )5. They are hot. They make me cry.
II.给下列汉语意思选择正确的英文句子。
（ ）1.这些是什么？
What are these B.What is this C.What are they
（ ）2.它们是土豆。
A.They are potatoes. B.Yes, they are. C.It’s a potato.
（ ）3.豆角是如此的长。
A. The green bean are so long. B.The green beans is so long. C. The green beans are so long.
（ ）4.这些是西红柿吗？
A.Are these potatoes B. Are these tomatoes C. Is this a potatoes
●Time, Time again, I ask myself （请写出这节课你的收获，完成下面的反思）
【学后反思】
____________________________________________________________________
答案
【新知预习】
1. C 2. A 3. E 4. B 5. D
【课堂探究】
1.(1)potatoes (2) pianos (3)zoos (4)tomatoes (5)photos
2. (1)B (2)A
【达标练习】
I.1.C 2.D 3.A 4.B 5.E
II. 1. A 2. A 3. C 4. BPEP小学英语四年级(下)第4单元第2课时当堂达标题
Unit 4 At the farm
A Let’s learn
I.看图片，选择正确的单词。
（ ）1 . A. tomato
（ ）2. B. green beans
（ ）3. C. potato
（ ）4. D. carrot
（ ）5. E. onion
II.选择最佳答案。
( ) 1. The ______are yellow
A.carrot B.carrots C. carrotes
( )2. Look at the green beans. They are_____.
A.green and long B.red and big C.yellow and long
( )3. Look at these______.
A.tomato B.tomatos C.tomatoes
( )4._______make me cry.
A.Carrots B.Potatoes C.Onions
( )5.---What are these ---They____potatoes.
A.is B. are C. am
III.选出每组单词中不同类的一项。
( )1. A.these B. carrot C.tomato
( )2.A.potato B.big C.small
( )3.A.these B.there C.this
( )4.A.vegetable B. potato C.tomato
( )5.A . carrot B.onion C. duck
答案
I.
1. E 2. C 3. D 4. A 5. B
II.
1.B 2. A 3. C 4. C 5.B
III.
1. A 2. A 3. B 4. A 5.CPEP小学英语四年级(下)第4单元第2课时
Unit 4 At the farm
A Let’s learn
一、【教材分析】
教学目标 知识目标 1.能够听、说、认读本课时主要单词hen, sheep, cow, horse以及它们的复数变化。2.能够熟练运用句型These are... They are so …介绍动物。
能力目标 能够熟练运用句型These are... They are so …介绍动物。
情感目标 热爱动物，尊重生态规律。
教学重点 掌握农场上常见的牲畜的名称hen, sheep, cow, horse以及它们的复数变化。
教学难点 sheep复数的不规则变化，horses的发音。
教学方法 情境教学法；任务型教学法
二、【教学流程】
环节 师生活动 二次备课
I.复习热身 1. Let’s sing Sing the song together.2. 口语交际，由讨论天气过渡到本单元口语话题。E.g.What’s the weather like today Is it warm T：What a lovely day! Let’s go to the farm.T：I love vegetables very much.Do you love vegetables？What vegetables do you know 引导学生说出自己所了解的有关蔬菜的单词，如果学生说出本课涉及单词，教师随即拿出卡片，请这位同学来教大家读。
Ⅱ.新知呈现 教师根据学生已说出来的蔬菜单词引出本节课。在课件上呈现出西红柿的图片，并呈现问题：What’s this 引导学生说：This is a tomato.教师教读单词tomato.让学生传卡片，说句子：This is a tomato.一一呈现西红柿的图片，引导学生说one tomato, two tomatoes, three tomatoes.教读tomatoes. 教师点拨：tomato------ tomatoes教师指着三张西红柿的图片问：What are these 引导学生回答：They are tomatoes.课件呈现单词he ,we， 引导学生读出these.学生操练句型:What are these They are tomatoes.教师再拿很多西红柿图卡，说：I like tomatoes. Do you like tomatoes 引导学生用I like …或I don’t like…根据自己的实际情况表达。呈现不同颜色的西红柿的图片，让学生观察图片，引导学生说出句子：The tomatoes are red\yellow\green.同样的方法学练：potato ------ potatoes用英语描述：The potatoes are big.请学生猜谜语：They are long and orange. Rabbits like eating them What are they 学习单词carrot--- carrots.教师出示青豆图卡，说：Look at the green beans. They are so long.让学生仿照描述: Look at the green beans. They are so green. Look at the green beans. They are so fresh.教师出示洋葱：It’s pink and round. It is often used in pizza. It’s an onion. Do you like onions 学生读单词：onionT: I don’t like onions. Because they make me cry.
Ⅲ.练习巩固 1. Listen and repeat.学生看课本或课件，播放Let’s learn 的录音，学生跟读。要求学生模仿发音。2. 教师出示词卡并领读，让学生巩固掌握生词的正确发音。3.小组活动：先在小组内读单词。然后一个同学说单词，其他同学举起相应的单词卡片。4. 教师将五种蔬菜实物或图片分别放在教室的不同位置，然后说单词，请学生指出相应的实物或图片。5.Sharp eyes.教师利用课件呈现单词，让学生快速的读出来；然后呈现图片，让学生快速的说出英语单词。6. 单、复数变化：课件呈现单词的单复数，学生读单词，并发现它们的区别。教师把单数形式板书到黑板上，教师把课前准备好的s和es 发给学生，让学生贴在单词后面。看谁贴的又快有准。7.Let’s chant.
Ⅳ.实践应用 1.绘画游戏：教师说：two potatoes；three carrots；a pink onion；five long green beans；four tomatoes学生比赛看谁画得又快又正确。2. 描述蔬菜。教师启发学生用所学形容词和颜色词描述图中的蔬菜。The tomatoes are red.The potatoes are big. Look at the green beans. They are so long. 呈现不同形态的蔬菜，让学生进行问答练习What are these They are…课件呈现句型：What’s this It’s a carrot. What are these They are carrots.学生总结出单数和复数的不同。this---these it---they is---are
Ⅴ.总结反馈 Sum up生总结渗透思想教育：Vegetables and fruits are healthy food. They are green food. We should eat more.
Ⅵ.作业布置 1.Listen to the tape for three times.（听录音跟读3遍。）2.Design your farm, and introduce the vegetables on the farm to your partner. .(设计自己的农场，把你的农场上的蔬菜介绍给你的同桌。）
三、【板书设计】
Unit 4 At the farm A Let’s learnWhat are these tomatoes potatoesThey are green beans. carrots onionsThe potatoes are big.
四、【教后反思】
本节课通过主线人物讨论蔬菜丰收的情景而呈现了句型Look at the …They’re so long. The potatoes are big.以及单词tomato, potato, carrot, green bean的词形和意义及其复数形式.这部分内容与学生的日常饮食息息相关，学生对这些蔬菜比较熟悉，能准确把握它们的特征，因此再让学生用英语描述这些蔬菜的特征时，能激起学生表达的欲望。因此在设计本节课时，以本单元参观Mr Macdonald的农场一情境为主要情景，并在这统一的情景下引领学生谈论自己设计的农场中的蔬菜，实现了学习语言、操练语言、运用语言等一系列教学目标。因为在let’s talk 中已经学过并操练过用英语描述蔬菜的特征，因此在本节课中在熟练的操练后应该更多的侧重语言知识的运用，让学生在真实的情景中，在多种形式的活动中表达、运用句型和这部分的单词，从而真正的培养学生的综合语言运用能力。本节课的名词的复数是重点，更是难点，因此在让学生表达的过程中，教师要注意复数形式的引导，让学生达到熟能生巧的程度。(共32张PPT)
Unit 4 At the farm
A Let’s learn
PEP小学英语四年级下册
Let’s sing
tomato
What’s this
It’s a .
These are .
these
he
we
(这些）
this---these
tomato
es
What are these
They are tomatoes.
What are these
They are ______.
tomatoes
They are_______.
green
They are_______.
yellow
What are these
They are ______.
tomatoes
yum
What are these
They are ______.
tomatoes
They are potatoes.
What are these
What’s this
It’s a .
potato
What are these
They are_______.
potatoes
Look at the potatoes.
They are________.
brown
big
The potatoes are________.
They are green beans.
What are these
They are_______.
green
long
carrot
carrots
What’s this
It’s a .
What are these
They are .
They are________ .
orange
yum
The carrots are________.
onion
onions
What’s this
It’s a .
What are these
They are .
They are________ .
red
hot
They make me cry.
Let’s learn
Listen and try to imitate.
（Tips:注意发音准确、模仿逼真）
Read the words in groups.
（小组内读单词。）
Sharp eyes
tomato
onion
carrot
green beans
potato
Sharp eyes
potato --- potatoes
tomato --- tomatoes
carrot --- carrots
onion --- onions
What can you find (你能发现什么？）
Let’s read
Let’s chant
Describe them.
The _____are ______.
What are these
They are….
What are these
They are….
What are these
They are….
1. ---What is this
---It’s a carrot.
2.---What are these
---They are carrots.
this---these
it---they
is---are
What can you find (你能发现什么？）
What have you learned today
(你学到了什么？)
Vegetables are healthy for us.
We should eat more vegetables.
（蔬菜有益于身体健康，我们要多吃蔬菜。）
Homework
Listen to the tape and repeat for three times.（听录音，跟读三遍。）
Design your farm, and introduce the vegetables on the farm to your partner.(设计自己的农场，把你的农场上的蔬菜介绍给你的同桌。）
Tank you!
Good bye!
