Unit 2 语法易错+巩固练习（导学案）三年级英语暑假自学课（外研版三起·新教材）

外研版三起新三年级暑假自学课 Unit 2 语法易错+巩固练习 语法易错01 语法点拨 1. 询问物品名称及答语:-What's this/that? —It's a/an... （1）教材原句： -Amy! What's this? 艾米，这是什么？-It's a book. 它是一本书。 -What's that? 那是什么？-It's an eraser. 它是一块橡皮。 （2）用法：指示代词 this, that的用法： 回答单数用 it。 ① 陈述句用法: 肯定句结构: This / That+ is+ a/an/其他+单数名词. 例：(1)This is a book.这是一本书。 (2)That is my schoolbag.那是我的书包。 ② 一般疑问句用法: 一般疑问句结构: Is this/that+ a/an/其他+单数名词? 肯定回答: Yes, it is.是的,它是。 否定回答: No, it isn't.不,它不是。 例：—Is this your pen?这是你的钢笔吗？ —Yes, it is. 是的，它是。 ③ 特殊疑问句用法：特殊疑问句结构：What is this/that? 缩写形式：What's this/that? 答句: It's+ a/an/其他+单数+名词. 例：—What's this?这是什么？ —It's a pen.它是一支钢笔 知识演练 一、仔细观察下列图片，选择正确的单词，完成句子或对话。 1. ________(This/That)is an eraser. 2.—Is ________(this/that) a pen? —No, ________(it/that) isn't. 3.—What's________ (this/that)? —It's a book. 二、单项选择 ( ) 1. _______ a pencil case. A. Its B. is C. It's ( ) 2.—_______ is this? —It's a pen. A. What's B. It C. What 语法易错02 语法点拨 2. 确认物品及答语：—Is it a/an + 单数名词? —Yes, it is. / No, it isn't. （1）教材原句: Is it a pen, too? 它也是一支钢笔吗？ No, it isn't. It's a pencil. 不，它不是。它是一支铅笔。 （2）句式结构: —Is it/this/that+a/an+单数名词？ —Yes, it is. / No, it isn't. （3）用法：是用来询问物体的一般疑问句，意为“它是……吗”。 （4）例句：(1) —Is it a pen?它是一支钢笔吗？ —Yes，it is. 是的，它是。 (2)—Is this a pencil?这是一支铅笔吗？ —No，it isn't. 不，它不是。 知识演练 一、单项选择 ( )1. —Is it a dog?—________. A. Yes, it is. B. Yes, it isn't. ( )2. —Is it an egg?—________. A. No, it is. B. No, it isn't. ( )3. —Is it a book?—________. It's my book. A. Yes, it is. B. No, it isn't. ( )4. —Is it an orange?—________. It's a pear. A. Yes, it is. B. No, it isn't. 二、情景选择 ( ) 1.别人问：“它是一块橡皮吗？” 你想肯定回答，说： A. Yes, it is. B. No, it isn't. ( ) 2.别人问：“它是一支铅笔吗？” 你想否定回答，说： A. Yes, it is. B. No, it isn't. ( ) 3.你想问 “它是一个书包吗？”，说： A. It is a schoolbag. B. Is it a schoolbag? 语法易错03 语法易错03 语法点拨 3.询问物品是否属于对方及答语：—Is this/that your...? —Yes, it is. / No, it isn't. （1）教材原句： —Is this your pen, Yoyo? —Yes, it is. 这是你的钢笔吗，约约？是的，确实是这样。 —Is this your ruler, Lulu? —No, it isn't. 这是你的尺子吗，露露？ 露露 不是的。 （2）用法：用来确认某物是否归某人所有 （3）例句：—Is this your pen? 这是你的钢笔吗? —Yes, it is.是的，它是。 —Is that Sam's ruler? 那是萨姆的尺子吗？ —No, it isn't. 不，它不是。 知识演练 一、单项选择 ( )1.—Is this your book? —________. A. Yes, it is. B. Yes, it isn’t. ( )2.—Is that your pencil? —________. A. No, it is. B. No, it isn’t. ( )3.—Is this your bag? —________. It’s my bag. A. Yes, it is. B. No, it isn’t. ( )4.—Is that your pen? —________. It’s Sam’s pen. A. Yes, it is. B. No, it isn’t. 二、情景选择 ( ) 1.你想问 “这是你的尺子吗？” A. This is your ruler. B. Is this your ruler? ( ) 2.你想问 “那是你的橡皮吗？” A. Is that your eraser? B. That is your eraser. ( ) 3.别人问 Is this your schoolbag? 你想肯定回答： A. Yes, it is. B. No, it isn’t. 重难点特训 一、从括号中选出恰当的内容，补全句子或对话。（只填序号) 1. What ________ (A. is B. are) this? 2. It's ________ (A.a B.an) book 3. This is________ (A. your B. I) bag. 4.— ________ (A. What B. What's) this? —It's a ruler. 5. Take care ________ (A. of B. at) your school things. 二、根据所给情景，选择合适的句子。 ( ) 1. 当你想问别人“它是一本书吗”时，你可以这样说： A. Is this your book? B. Is it a book? ( ) 2. 当你想知道远处的物品是什么时，你可以这样问： A. What's this? B. What's that? ( ) 3. 当朋友拿着书包问你“这是什么”时，你可以这样说： A. It's a schoolbag. B. It's a pencil case. ( ) 4.当你想向朋友介绍“它是一块橡皮”时，你可以这样说： A. This is my classroom. B. It's an eraser. 三、【新情境-新型文具】典典和同学们在画板报，请你根据句子或对话选择相对应的图片。 ( ) 1. This is a schoolbag. It can (能) open and close automatically(自动地). ( ) 2. —What's this? —It's a ruler. And it's a pencil, too. ( ) 3. Look at the pencil case. We can write on it. ( ) 4.—What is it?—It's an e-pen(电子钢笔). 四、典典和他的同学们在玩填词游戏。选词填空，补全对话。(填选项) A. isn't B. Is C. What's D. It's E. this F. your 1.—Hi, Sam. ______ it a pencil? —No, it, ______. It's a pencil case. 2.—Amy! Guess! ________ this?—It's a book. 3.—What's that? —_______ a ruler. 4.—Hello! Is it ______ schoolbag? —Yes, it is. 5.—Is ______ your eraser? —Yes, it is. 五、典典和华华在玩猜物游戏。读对话,完成下列任务。 Huahua: Diandian, guess! What is it in the schoolbag? Diandian: Is it a ruler? Huahua: No, it isn't. It's a pencil. Diandian: What colour is it? Is it red? Huahua: Yes! It is a red pencil. And what is that? Diandian: Is it a book? Huahua: No. It is a green pencil case. It is from Sally. Diandian: Who (谁) is Sally? Huahua: She is my friend. She is from the US. 任务一：读对话，选择正确答案。 ( ) 1. A(n) _______ is in the schoolbag. A. eraser B. pencil C. picture ( ) 2. The pencil is _______. A. red B. blue C. black ( ) 3. The pencil case is ________. A. yellow B. pink C. green 任务二：读对话，判断句子正(T)误(F)。 ( ) 1. The pencil case is from Sally. ( ) 2. Sally is from the UK. 六、阅读短文，判断下列句子正(T)误(F)。 We have some tools(工具) for writing. Here are three: the pen, the quill and the brush. The pen is used(被使用) a lot now. There's some ink(墨水) in it. We use pens for school work and letters(信). The quill is old. It's from a bird's feather(羽毛), usually from geese, swans, or turkeys(通常来自鹅、天鹅或者火鸡). We don't use it much now. The brush is special. It has soft hair. Artists(画家) use it to paint. These tools are different but helpful(有用的). ( ) 1. The quill is used a lot now. ( ) 2. The pen is from a bird's feather. ( ) 3. Artists use the brush to paint. ( ) 4. These tools are helpful. ( ) 5. There are three writing tools mentioned(提到) in this passage. 参考答案与解析 语法易错题答案01 一、选词填空 1. This。解析：近处物品用 this（这）。 2. that；it。解析：远处用 that；Is that...? 回答用 it 代替。 3. that。解析：远处物品提问用 that。 二、单项选择 1. C。解析：表示 “它是……” 用 It's = It is。 2. C。解析：提问 “什么” 用 What。 语法易错题答案02 一、单项选择 1. A。解析：肯定回答固定 Yes, it is. 2. B。解析：否定回答固定 No, it isn't. 3. A。解析：后句 It's my book. 说明是肯定。 4. B。解析：后句 It's a pear. 说明是否定。 二、情景选择 1. A。解析：肯定回答用 Yes, it is. 2. B。解析：否定回答用 No, it isn't. 3. B。解析：一般疑问句结构 Is it...? 语法易错题答案03 一、单项选择 1. A。解析：肯定回答 Yes, it is. 2. B。解析：否定回答 No, it isn't. 3. A。解析：后句 It's my bag. 表肯定。 4. B。解析：后句 It's Sam's pen. 表不是 “你的”。 二、情景选择 1. B。解析：提问 “这是你的…… 吗？” 用 Is this your...? 2. A。解析：提问 “那是你的…… 吗？” 用 Is that your...? 3. A。解析：肯定回答用 Yes, it is. 重难点特训 一、选词填空 1. A。解析：this 是单数，用 is。 2. A。解析：book 辅音开头，用 a。 3. A。解析：表示 “你的” 用 your。 4. B。解析：提问 “这是什么” 用 What's this? 5. A。解析：固定搭配 take care of（照看）。 二、情景选择 1. B。解析：问 “它是一本书吗” 用 Is it a book? 2. B。解析：远处物品用 What's that? 3. A。解析：书包是 schoolbag。 4. B。解析：橡皮是 eraser。 三、选图片 1. B。解析：句子描述的是一个书包，能自动开合。选项B显示的是一个书包，符合描述。 2. A。解析：对话提到尺子。选项A显示的是一把尺子，符合描述。 3. D。解析：句子提到铅笔盒,可以在上面写字。选项D显示的是一个铅笔盒，符合描述。 4. C。解析：对话提到电子钢笔。选项C显示的是一支电子钢笔，符合描述。 四、选词填空 1. B；A。解析：Is it...? 提问；否定回答 isn't。 2. C。解析：提问 “这是什么” 用 What's this? 3. D。解析：回答用 It's a... 4. F。解析：your schoolbag（你的书包）。 5. E。解析：Is this your...?（这是你的…… 吗？） 五、猜物游戏 任务一 1. B。解析：文中 It's a pencil. 2. A。解析：文中 It is a red pencil. 3. C。解析：文中 It is a green pencil case. 任务二 4. T。解析：文中 It is from Sally. 5. F。解析：文中 She is from the US.（不是 UK） 六、阅读判断 1. F。解析：文中 We don't use it much now. 2. F。解析：quill 来自羽毛，不是 pen。 3. T。解析：文中 Artists use it to paint. 4. T。解析：文中 These tools... helpful. 5. T。解析：文中提到 pen、quill、brush 三种。 2 / 2 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $