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人教版小学三年级英语寒假专题——Be动词用法和祈使句.doc

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年 级 三年级 学 科 英语 版 本 人教新课标版 课程标题 寒假专题——be动词用法和祈使句 编稿老师 一校 林卉 二校 李秀卿 审核 崔小芳 一、学习目标: 1. Be动词:am, is, are 2. 祈使句 二、重点、难点: 1. 正确使用be动词am, is, are。 2. 明确祈使句的概念并掌握其常见的句型结构。 三、考情分析: 近年来,小学三年级英语试题对be动词和祈使句的考查主要集中以下两方面: 1. 正确使用be动词:am, is, are。 2. 熟练使用祈使句。 四、知能提升: (一)知识讲解 I. Be动词 1. 分类:英语中be动词的一般现在式有三个,分别是:am,is,are . 2. 用法:am和主语I(我)连用。is用于he(他), she(她), it(它)和主语是单数的句子当中。are用于we(我们), you(你们), they(他们)和主语是复数的句子中。 例: I am a student. He’s a postman. She isn’t my English teacher . Tom and I are the same age. Where is my dress? Here it is. Where are my shoes? Here they are. We are both tall. You are tall, too. 小结:be动词用法结构图: (否)aren’t be 动词用法歌诀: Be 动词,兄弟仨,am, is, 还有are 。 我(I)用am ,你(you)用are ,is用于他(he), 她(she), 它(it) 。 单数名词用is, 复数名词都用are 。 【考题链接】 1. Hello! Here _____an orange for you ! A. am B. is C. are 答案:B 思路分析:主语an orange是单数形式。 2. My books _____ very useful . A. am B. is C. are 答案:C 思路分析:主语My books是复数形式。 3. I have two pens. They ____ new. One ____ green and the other _____ blue . A. am, is ,am B. is, are, is C. are, is, is 答案:C 思路分析:主语they是复数形式。One 是单数形式,the other 意为“另一个”,也是单数形式。 II. 祈使句 <一>定义:祈使句表示请求、命令、建议等。谓语动词一律用原形。句子中通常不用主语,句末用惊叹号或句号,用降调来读。 <二>分类:肯定的祈使句和否定的祈使句. 1. 肯定的祈使句 a. 句型:动词原形~.(省略主语) Stand up.起立。Be quiet,please.请安静。 比较 陈述句:You sit down.你坐下来。祈使句:Sit down.坐下。(省略主语you) 注意:有时,为了加强语气,可在动词之前加do。 Do sit down.务必请坐。Do study hard.一定要努力学习。 b. 用客气的语气表示祈使句时,可在句首或句尾加上please,但如果在句尾加please,那在please之前一定要加一个逗号“,”。 Come this way,please.请这边走。 注意:祈使句中如果有呼唤语,一定要用逗号“,”隔开,呼唤语可出现在句首或句尾。 Li Ming,come here.李明,过来。Come here,Li Ming.过来,李明。 c. 含有第一、第三人称主语的祈使句 Let's say good-bye here.我们在此道别吧。Don't let him do that again.别让他再那么做了。 句型:Let+第一人称(me,us)~. Let+第三人称代词(宾格:him,her,it,them)或名词~. Let's go at once.咱们马上动身吧。 Let me try again.让我再试试。 Let Tom go there himself.让汤姆自己去那儿。 注意: Let's包括听话者,Let us不包括听话者。用于反意疑问句时最明显。 Let's go,shall we?咱们去吧,怎么样? Let us help you,will you?让我们帮帮你,好吗? 2. 否定的祈使句 句型a:Don't +动词原形~ Don't swim in the river.别在河里游泳。 Don't be late.别迟到。 Please don't be noisy.请不要大声喧哗。 注意: 表示禁止时,尤其是标语等也可用“No+名词/动名词”的形式来表示。 No smoking!禁止吸烟! No parking!禁止停车! No litter!不准乱扔杂物! 句型b:Let's(us,me)+not +动词原形~. Don't let +第三人称代词的宾格或名词+动词原形. Let's not say anything about it. 对于这件事,咱们什么也不要说。 Don't let them play with fire. 别让他们玩火。 【易错点】 1. be 动词的缩写形式: I am =I'm he is =he's it is = it's she is = she's you are=you're we are = we're they are = they're is not =isn't are not = aren't * am not 没有缩写形式.I'm不能用在句末。* 2. 祈使句的回答: 回答祈使句时,应该说“OK./ All right./ Great./Good idea.”(好的,好吧,好极了) 决不能用“That's OK./ That's all right .”(没关系) 如:—Let's fly it .—Great ! —Show me your ruler .—All right . 【考题链接】 1. ________ the duck yellow . A. colour B. Colour C. Colours 答案:B 思路分析:"colour"作动词时意为“给……涂色”;作名词时意为“颜色”。祈使句需以动词原形开头且首字母要大写。 2. ___________draw a monkey . A. Let B. Lets C. Let's 答案:C 思路分析:“Let's”是Let us 的缩写形式。意为“让我们……”“Let us +动词原形”构成祈使句。 3. —Are you a student ? —Yes, ______. A. I are B. I am C. I'm 答案:B 思路分析:I 必须与am 连用,但I'm不能用在句末。 4. Everyone _____here today . A. am B. is C. are 答案:B 思路分析:主语是复合不定代词时,谓语动词用单数。 5. —_____this your chair ? —Yes , it is. A. Am B. Are C. Is 答案:C 思路分析:"this "意为“这个”,是单数。主语是单数时,谓语动词须用单数。 (二)即学即练 Ⅰ. 用“am , is , are ”填空: 1. This____ my mouth . 2. How ____you ? 3. What______ your name ? 4. Mr Wang _____ a good teacher . 5. My shoes ______very beautiful . 6. _____that your brother ? 7. Everything ____ OK . 8. I _____ tall and thin. II. 连词成句。(注意大小写及标点符号) 1. are, how , you (?) ____________________ ____ 2. show , me , your, pencil-box( .) ___________________ 3. at, my , train , look(. ) ___________ ___ _____ 4. Let, me, a , look, have (. ) _____________________ 5. colour, pink , it , and, blue (. ) ______________________ 下册Unit 1 Let's go to school . L1-L2 一、预习新知 下节课的主要内容,包括 单词:classroom school storybook water bottle; 句型:Let’s go to school . Nice to see you again . Look! I have a new... Can I see it ? Sure .Here you are . 二、预习点拨 思考问题一:新学期开始了,见到同学们你知道该说些什么吗? 思考问题二:同学们知道怎样用英语说“学校,教室,故事书和水瓶”吗? (答题时间:30分钟) Ⅰ. 用“am , is , are ”填空: Hello! My friends. How___ you? Now, I will talk about my family and me. There ____four people in my family. They ____ my father, my mother, my little brother and I. My father ___ a doctor. My mother ____ a teacher. My brother ___only 3 years old. He ___lovely.(可爱的) .I ____ 10 years old now. I____ in Class1, Grade 3.I love my family . II. 单项选择: ( ) 1. ____ it pink and blue . A. Look B. Colour C. Is ( ) 2. ______ draw an egg. A. Let B. Lets C. Let’s ( ) 3. ____ some rice, please . A. have B. Have C. Drink ( ) 4.Here_____ a pear for you . A. are B. am C. is ( ) 5. Here you _____ . A. am B. is C. are ( ) 6. We ___ all here today. A. am B. is C. are ( ) 7. _____make any noise . A. Don't B. Not C. Can ( ) 8. I like my house. It____ big . A. am B. is C. are ( ) 9. —What _____this, Li Yan? —____elephant. A. is, A B. are, A C. is, An ( ) 10. —Is that ____ eraser? —Yes, it____ . A. a, is B. an, is C. an, isn't Ⅰ. 用“am , is , are ”填空: Hello! My friends. How __are_ you? Now, I will talk about my family and me. There are four people in my family. They are my father, my mother, my little brother and I. My father is a doctor. My mother_ is a teacher. My brother is only 3 years old. He is lovely.(可爱的) .I am 10 years old now. I am in Class1, Grade 3.I love my family . II. 单项选择: ( B ) 1. ____ it pink and blue . A. Look B. Colour C. Is ( C ) 2. ______ draw an egg. A. Let B. Lets C. Let’s ( B ) 3. ____ some rice, please . A. have B. Have C. Drink ( C ) 4. Here_____ a pear for you . A. are B. am C. is ( C ) 5. Here you _____ . A. am B. is C. are ( C ) 6. We ___ all here today. A. am B. is C. are ( A ) 7. _____make any noise . A. Don't B. Not C. Can ( B ) 8. I like my house. It____ big . . A. am B. is C. are ( C ) 9. —What _____this, Li Yan? —____elephant. A. is, A B. are, A C. is, An ( B ) 10. —Is that ____ eraser? —Yes, it____ . A. a, is B. an, is C. an, isn't 第6页
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