四年级Unit4 At the farm_unit4atthefarm

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四年级Unit4 At the farm（教案一）（A Let’s learn、Let’s talk）

一、教学目标

1、知识目标

（1）能够听、说和认读单词：tomato，green bean, potato, carrot 及其复数形式。（2）能够正确使用上述单词和these介绍各种农场蔬菜。（3）掌握句型：Are these carrots? Yes, they are./No, they aren’t.what are these? They are„。

2、能力目标

培养学生的口头表达能力和表演能力。

3、情感目标

教育学生要有合理的饮食习惯。

二、教学重难点 重点：掌握单词：tomato，green bean, potato, carrot 及其复数形式。并掌握句型：Are these carrots? Yes, they are./No, they aren’t.What are these? They are„。

难点：能够在情景中运用句型：What are these? They are„询问和回答各种蔬菜的名称。

三、教学准备

多媒体课件、录音机、磁带及单词卡片。

一、热身（Warm up）: Song:《Old MacDonald had a farm 》

【设计意图】课上，利用多媒体课件播放英文歌曲《Old MacDonald had a farm》,师生边唱边跳，在优美的乐曲中拉开本节课的序幕。通过TPR“全身动作反应法”，演唱英文歌曲，烘托课堂氛围，帮助学生尽快进入学习状态，充分调动学生学习英语的兴趣。

二、复习（Revision）： 出示PPT：

Old MacDonald had a farm.I have a farm ,too.Look!This is my farm.What do you see at the farm? Do you see any animals? Do you see any vegetables? What kind of vegetables? Talk about this picture in groups.T ask: What are these ?Are

these apples ? 【设计意图】运用多媒体课件，呈现真实的语境，让学生学会观察图片，复习旧知，教师因势利导，出示本课的话题，引导学生关注本课的对话内容，从而更加激发学生探究新知的兴趣。

三、新课展示(Presentation)Words: Let’s learn

1.Teach “carrot（s)”

1)T: Let’s play a gueing game: it’s a kind of vegetables.It’s orange.The rabbits like it very much.What’s it？

Ss can answer it both in Chinese and English.Then T will show the word card and the picture and drill it.T will lead activity and pick some S group to read.T: Then let’s count the carrots in the picture.(e.g., One carrot, two carrots… many carrots.)教师出示word card “carrots”并张贴，教师带读，抽查2小组读。

2)I like carrots.They are yummy.（出示单词卡，背面注上中文，抽读个别学生，教师带读新单词。)趣味拍手操练chant:I like carrots.I like carrots.Yummy, yummy, yummy.（师生示范chant，学生之间pair work。）教师出示word card “carrots”并张贴，教师带读，抽查2小组读。【设计意图】以一个谜语导入本课的新授知识，富有一定的创意，容易激发学生的好奇心，调动学生的积极性，并在自编的chant中不知不觉地学习如何描述carrot。2.Teach “Green beans-tender-long”

1)T: Show a picture of “green beans” and ask “what are these? Are they carrots?

Ss: No, they aren’t.They are green beans.（教师启发）Ss show the word card and drill it.2)T: Look at the green beans.They’re tender.（比较几根发蔫的四季豆和新鲜的四季豆。）Then, show the word “tender” and ask Ss to read it.趣味拍手操练: I like green beans, I like green beans, tender, tender, tender.(Use the different intonations.)3)Look at the green beans.They’re long.(Show two green beans and compare them.）Show the word card “long” and let Ss read it.3.Teach “tomato(es)-juicy” 1)Show a bag.T： Look!I have a bag.There is something in it.Who wants to come to the front and taste? Be brave!2)Close your eyes.Open your mouth.What’s it?

当学生得出答案时，教师出示实物及单词，逐步引出one tomato，two tomatoes，从而引出tomato的复数形式。

3)Play the finger exercises.请学生看老师的手指数量来判断应该使用tomato还是tomatoes。4)Show tomatoes.T: Look at the tomatoes.What color are they？ Ss: They are red.T: Yes.They’re red and juicy.教师用手掰开西红柿并展示词卡。Then ask the boys and girls to repeat it.趣味拍手操练: I like tomatoes, I like tomatoes, juicy, juicy, juicy.【设计意图】在这个教学环节教师应用了一个不同的导入方法，让学生通过品尝从而引出tomato。应用finger游戏让学生掌握tomato的单复数关系，避免了讲语法的枯燥，符合小学生的心理特征。

4.Teach “potato(es)-tasty” 1)Show a bag.T: Look at the bag.Can you touch and gue “Which one is the potato?” Ss touch it and try to find out the potato.通过这个“摸一摸”游戏，引出新单词potato，然后出示单词卡，让学生认读。接着引导学生数一数共有多少个potato。2)Play a short game “High and low”.巩固操练potato的读音。3)Show the true potatoes.T: Look at the tomatoes.They’re red.Look at the potatoes.They’re brown.编一个chant巩固知识：

Tomatoes, tomatoes, “t” is for tomatoes.Potatoes, potatoes, “p” is for potatoes.带领学生分小组一起吟唱。

4)T: When the potatoes become fries, they’re tasty.趣味拍手操练：

I like potatoes, I like potatoes, tasty, tasty, tasty.5)T shows two potatoes and compare them.T: Look!This potato is big.T shows the word card “big” and let Ss read it.【设计意图】在这个环节里，教师让学生通过摸一摸、猜一猜的方式引出potato。并把potato 和tomato进行了比较教学，以一个chant 加深学生对这两个音、形近单词的印象，最后一个环节教师又把单词教学落实到句型中，使单词教学更具意义。Let’s talk

（1）教师出现carrots单词卡片。T： What are these？引导学生说出：They’re carrots.Bb: What are these？They’re carrots.教师解释these，并带读这些句子。

(2)教师继续呈现potatoes，green beans，让学生操练句型：What are these？They’re„(3)教师再次呈现carrots单词卡片，T：Are these carrots? 引导学生说：Yes, they are.教师呈现tomatoes, T:Are these carrots?

Ss: No, they aren’t.继续呈现其他单词，用同样的方法的方法操练句型：Are these„? Yes, they are./ No, they aren’t.(4)让学生翻开38页，看Let’s talk部分的图片，T：Who is at the farm? What do you see at the farm? 引导学生看图回答问题。

（5）学生听录音并跟读，教师板书对话内容。解释“try some” ,带读对话，齐读对话，角色扮演。背诵对话。

4、Sum up

5、Homework（1）抄写单词tomato，green bean, potato, carrot和句子Are these carrots? What are these？各五遍

1、观察图画，导入新知

There are some vegetables at my farm.（1）西红柿图片提问：

What’s

this?

It’s

a

tamato.What are these ?

They’re tomatoes.(板书句型)（2）胡萝卜图片提问：

What’s this ?

It’s a carrot.What are these ?

They are carrots.Are

these carrots ?

Yes,they are.((板书句型)（3）情感渗透：Tomatoes and carrots are vegetables.Please remember: Every vegetable is healthy for our body.【设计意图】巧用多媒体课件，引出本课的主要句型，激发学生的学习兴趣。通过仔细观察图片，帮助学生在语境中正确理解名词复数的用法及读音。教师因势利导对学生进行情感教育，教育学生从小养成多吃蔬菜的好习惯。