英语人教版四年级下册Unit 4 At the farm ALets talk.doc

四年级英语下册Unit 4 At the farm A Lets talk 教案 内容分析： 本部分学生学习的核心句型是：Are these carrots？Yes, they are. No, they arent. 以及What are these？Theyre tomatoes. 教材通过Mike与Sarah参观农场并与农场主人对话的情景然学生感知上述句型的语义及语用情景。 本部分的教学目标是：学生能够理解对话大意，能够用正确的语音、语调朗读对话；能够在情景中运用句型Are these.? Yes, they are. What are these? Theyre. 询问物品名称并回答；能够在情景中恰当运用句型Theyre good / so big! 描述物品特点；能够在语境中理解新词carrot和tomato的意思，并能正确发音。 本课时核心句型是涉及名词复数形式的特殊疑问句和一般疑问句，这一知识点在四年级上册第四单元的B Lets talk出现过一次，本册学生用书的前三个单元均未有涉及。创设适当语境让学生充分感受并理解名词单、复数的意义以及相应句型的变化，并能在情景中正确运用和表达。 教学步骤：1 Warm up Listen the song Mary has a little lamb2 Revision The words of fruits and animals.教师引导学生说出所学的水果和动物3 Presentation and practice1.呈现与操练从处理局部语言到呈现完整对话（1） What are these? Theyre. 话轮的呈现与操练。师生围绕单词red做头脑风暴（Brainstorm）游戏。教师板书单词red ，然后出示一支红色的钢笔，板书：a red pen. 教师问：What else can be red? 引导学生说词组，如：a red kite, a red apple等，教师用简笔画画出相应物品。最后教师说：I know a kind of red vegetable. Its round. Its juicy. What is it? 教师在黑板上画一个西红柿，说：Look！Its a tomato. 板书：Its a t_m_t_. 请学生尝试填出所缺字母并朗读单词。教师再画一个西红柿，引导学生说：Theyre tomatoes. 教师板书句子Theyre tomatoes.提示学生注意tomato一词的复数变化，帮助他们理解Its a tomato.和Theyre good.两个句子的不同含义。教师手指西红柿图描述：Theyre tomatoes. Theyre red. Theyre good. Theyre yummy. 同桌学生结对练习运用Theyre. 描述tomatoes。教师继续描述：Theyre Yellow. Theyre small. Theyre yummy, too.What are they?学生尝试猜测后，教师引导学生用What are these?提问。教师可板书句子：What are these?然后出示he, she, we等单词帮助学生根据发音规则拼读单词these。最后教师出示黄色西红柿图片，说：Theyre tomatoes,too. Theyre yellow tomatoes.师生做“抓单词”（Catch the words ）游戏师生快速出示一种水果或蔬菜的图片（图片中水果或蔬菜数量应该等于或多于两个），问：What are these? 引导学生用Theyre.回答。最后，教师呈现胡萝卜的图片，教学carrots， 并引导学生说： Theyre so big! 同桌学生用red tomatoes, yellow tomatoes和carrots操练句型What are these? Theyre . Theyre so .! (2) Are these carrots? Yes ,they are.话轮的呈现和操练教师问：Where can we see these vegetables? 然后用简笔画画一些篱笆或课件出示农场背景，说：We can see them at a farm. 教师板书farm, 然后引导学生拼读改单词。教师说：Now lets go to a farm. 教师利用图片或课件呈现两株开着黄色花朵的西红柿苗，问：What are these? Can you guess? 引导学生使用Are these.?进行猜测，教师适时出示花朵凋谢后结出红色果实的西红柿图片。教师利用课件展示胡萝卜种子发芽、长出幼苗、开花和结果的过程，然后问：Are they carrots? 学生用Yes, they are. 或No,they arent.进行判断。学生看图分角色操练对话，对话示例如下：S1：Look at these! Are these.?S2：Yes, they are. / No,they arent.S1：What are these? S2：Theyre.1.Game.Guessing game.教师说谜语，引导学生用Are they?来猜猜是什么蔬菜。 They are red. They look like apples, but they aren t apples. What are they? They are tender and green. What are they? They are long and orange. Rabbits like eating them. What are they? They are round, pink and white. What are they? They are brown. French fries are made of them. What are they? 学生猜对了，教师回答Yes，they are. 并拿出相应的单词卡片请学生拼读；如果猜错了教师回答No, they aren t.再请其他人猜, 直到猜对为止。操作方法：先由教师示范回答，然后换由另一个学生回答。2. Look and say.(1) 教师说：Mr MacDonald has a big farm,too. Lets go and have a look.教师出示对话图片，问：Who is at the farm? 引导学生看图回答问题。教师将对话中Mr MacDonald 说的句子镂空，请学生尝试补充对话。关于第三幅图的Try some.这个句子，建议教师引导学生根据图片信息猜测句子的意思，如学生说出Have some tomatoes. 教师要予以表扬并顺势引出Try some tomatoes.(2) 教师播放对话动画，学生观看并跟读。(3) 同桌学生结对表演对话。可以表演整段话，也可围绕任意一幅或两幅图展开对话。(4) 教师问：What else can you see on the farm?鼓励学生大胆想象，说出一些动物或水果类的词汇。课件或图片呈现一些动物和水果图片，如：apples,pears,dogs,cats等，同桌结对，分别扮演Mike或Sarah和Mr MacDonald看图创编对话。教师提醒学生运用板书中的句型。(5) 师生做