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A computer has a keyboard

Lesson 2. A computer has a keyboard. 教学目标. 学习身体器官. 会简单描述一件东西. 初步掌握单三形式. 动词单三变疑问句. 词 汇. computer / kəm‘pju:tə/ 电脑，计算机 keyboard /'ki:bɔ:d/ 键盘 mouse /maus/ 老鼠，鼠标 tall /tɔ:l/ 高的 mouth / mauθ/ 口，嘴 hand /hænd/ 手

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A computer has a keyboard

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  1. Lesson 2 A computer has a keyboard

  2. 教学目标 学习身体器官 会简单描述一件东西 初步掌握单三形式 动词单三变疑问句

  3. 词 汇 • computer /kəm‘pju:tə/电脑，计算机 • keyboard /'ki:bɔ:d/键盘 • mouse /maus/ 老鼠，鼠标 • tall /tɔ:l/ 高的 • mouth /mauθ/口，嘴 • hand /hænd/ 手 • write /rait/ 写

  4. /kəm'pju:tə/ computer mouse /maus/ keyboard /'ki:bɔ:d/

  5. /nəuz/ nose /ai/ hand /hænd/ eye mouth ear /iə/ /mauθ/ foot /fut/

  6. He is an animal. He can swim. He has two legs. duck/dʌk/ He has a long mouth. What is it?

  7. letter /‘letə/ 信 • write a letter • write letters • be called /kɔ:ld/ 叫做 • E-mail /’i:meil/ 电子邮件 • clever /‘klevə/ 聪明的 • catch /kætʃ/ 捉，抓 • does /dʌz/ do的第三人称单数

  8. He is an animal. He is tall. He has four legs. giraffe/dʒi'rɑːf/ He has a long neck(脖子). What is it?

  9. Oh, You have a nice TV. No, it’s not a TV. It’s a computer. But it looks like a TV. Yes. But a computer has a keyboard. 哦, 你有一台不错的 电视。 不, 它不是电视。它 是一台电脑。 但是它看起来像电视。 是的。但是电脑有一 个键盘。 课 文

  10. What’s that? It’s a mouse. Does a TV have a mouse, too? No, it doesn’t. Where is the mouse? Let me catch it. Look! Here it is. 那是什么？ 是鼠标。 电视机也有一个鼠标 吗？ 不, 它没有。 老鼠在哪? 让我来抓它。 看! 它在这。

  11. look like 看起来像 • A look(s) like B. A看起来像B。 • 鼠标看起来像一只老鼠。 • A mouse looks like a mouse. • 电脑看起来像一台电视。 • A computer looks like a TV.

  12. 动词单三 • 1. 什么是动词单三形式? • 2. 哪些词才有单三形式? • 3. 什么时候用单三形式? • 答: 1. 就是当一般是句子开头的人/物是第三人称、单数(两个条件必须同时满足)时，动词(表示动作的词)必须要用第三人称单数形式, 即常在动词后加-s或-es. 2. be(am, is, are)动词和表示动作的词即动词, 如: run跑, have吃、喝、有, like喜欢,

  13. meet遇见, swim游泳……都是动词。只有动词才有单三形式。 • 3. 判断动词用不用单三形式, 我们主要看句子开头的人/物。当人/物不是我I, 你you, 复数, 都可以看成是第三人称单数。这时be动词只能用is, 动词要变成单三形式。判断对人称最关键。

  14. 动词单三变化规则 • 1. 一般在动词之后直接加s,在清辅音后发音为[s], 在浊辅音及元音后发音为 [z] • 例如: stop－stops [s]; make－makes [s] ②read－reads [z]; play－plays [z] • 2. 以sh/ch/s/x结尾的词+es, 发音为[iz] • 例如: teach－teaches [iz]; watch－watches [iz] • 3. 以辅音字母+y结尾的, 把y变成i, +es,读作[iz]

  15. 例如: study—studies buy--buys • 4. 辅音字母+o结尾的+es, 读作[z] • 例如: go—goes [z] do—does [z] • 下面几个动词变成单三形式时, 原词的元音部分的发音发生了较大的变化, 请注意发音。如: 1、do [du:] 做－does [dʌz]2、say [sei] 说,讲－says [sez] 3、have [hæv]－has [hæz]

  16. 动词单三句如何变疑问句 have Does He a book has

  17. 对问句的回答: • 肯定回答: Yes, 第三人称单数 does. • 否定回答: No, 第三人称单数 doesn’t. • 例如: Does she have a sister? • 肯定回答: Yes, she does. • 否定回答: No, she doesn’t.

  18. 背 • 变疑问句步骤: • 1.首先看句子中有没有be动词(am, is, are)若有, 变否定直接在be动词后加not,变疑问直接把be动词提前(第一人称的词都要变为第二人称的词I变you, we变you, my变your, our变your)。 • 2.若句子中没有be动词, 看句子中有没有can,若有, 变否定直接在can后加not,变疑问直接把can提前。 • 3.若句子中既没有be动词也没有can,找实意动词。变一般疑问句分两种情况, 是单三人称的, 变疑问在句子开头加Does,并把动词单三变原形(前面打死does后面去死s), 不是单三人称的，变疑问，直接在句子开头加Do 就行了。

  19. 1. He likes dogs. 2. I love my cat. 3. We have a ruler. 4. He has an egg. 5. They have five cats. 6. Qiqi has a football. 7. She has two pencils. 8. I am a teacher. Does he like dogs? Do you like your cat? Do you have a ruler? Does he have an egg? Do they have five cats? Does Qiqi have a football? Does she have two pencils? Are you a teacher? 练习变疑问句

  20. 练习变否定句 • 1. His name is Tom. • His name is not Tom. • 2. We like football. • We don't like football. • 3. You have a computer. • You don't have a computer. • 4. They have a keyboard. • They don’t have a keyboard. • 5. My parents have a car. • My parents don't have a car.

  21. 作 业 • 1. 动词单三变化规则要求会背, 例子要求会默写。 • 2. 小小翻译家。 • 你有两只眼睛吗？ 是的, 我有。 • Do you have two eyes? Yes, I do. • 他有四条腿吗？ 不, 他没有。 • Does he have four legs? No, he doesn’t. • 你们有牛奶吗？ 不, 我们没有。 • Do you have milk? No, we don’t.

  22. Thank You ! Goodbye

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