三年级英语下册教案2013新.doc

上传人:wux****ua 文档编号:9189596 上传时间:2020-04-03 格式:DOC 页数:54 大小:402KB
返回 下载 相关 举报
三年级英语下册教案2013新.doc_第1页
第1页 / 共54页
三年级英语下册教案2013新.doc_第2页
第2页 / 共54页
三年级英语下册教案2013新.doc_第3页
第3页 / 共54页
点击查看更多>>
资源描述
PEP三年级英语下册教案课题:Unit 1 Welcome back to school!教学目标:1.能听,说,认读单词she, he, student, teacher, pupil等词。2.能说出几个国家的名称,如China,Canada, USA,UK等。3.能听懂,会说:This is my friend. Nice to see you again.Where are you from? I am from .We have two new friends. She/He is a new student/teacher.并能在实际情景中运用。4.了解字母a的发音。能正确书写单词cat, bag, hand, dad.5.能唱歌曲 Boy and girl和说唱2首歌谣。6.能听懂,读读英语小故事。优生能进行表演。7.注重培养学生的爱国意识,和平意识及世界意识。知识结构:本单元是开学的第一个单元Welcome back to school 欢迎学生回到学校,很快就把学生拉到学习上来,不再三心二意,从巩固问候语开始,如Good morning,boys and girls. Nice to meet you.Nice to meet you, too.接着学习自我介绍ImIm from Where are you from?和9个单词Canada, China, USA,UK,she, he, student, teacher, pupil以及英语字母A的发音。知识基础:在上个学期知识点的基础上Good morning. Nice to meet you.进一步扩展新的知识,易于学生接受 ,更好的学习自我介绍。通过本单元的学习,更好的为以后学习介绍他人奠定基础;字母的学习也为以后学习打下基础。单元教学课时:六课时第一课时:A(Lets talk Look and say) 第二课时:A(lets learn lets chant) 第三课时:A (lets spell ) 第四课时: B (lets talk look and say Start to read) 第五课时: B (lets learn lets chant)第六课时: B ( lets check lets sing ) C (story time)教学重难点:1.能听,说,认读单词she, he, student, teacher, pupil等。2.能说出几个国家的名称,如China,Canada, USA,UK等。3.能听懂,会说:This is my friend. Nice to see you again.Where are you from? I am from .We have two new friends. She/He is a new student/teacher.并能在实际情景中运用。4.了解字母a的发音。能正确书写单词cat, bag, hand, dad.单元难点:单词认读及句型的运用。第一课时教学内容:A(Lets talk Look and say)教学目标:1.能听说单词Welcome,back,boy,and,girl,we,new,friend,today,from等。2.会运用句子Im /Im from介绍自己及自己的情况。3.学习新句型:We have two new friends today. Im from (国家)。Welcome!4.培养学生尊重他人的良好品质。教学重点:理解单词boy,girl,friend。教学难点:1.boy和from的读音不易掌握。2.认识和理解英语中人名、地名及国家名称的写法和读法。教 具:人物头饰及一些公众人物或卡通人物的头饰、常见的国家国旗、课件。教学过程:一、热身/复习(Warm-up/Revision) 师生问候,用英语打招呼 Welcome back to school!复习巩固学过的内容,创设英语学习氛围。 二、新课展示(Presentation)1.教师借助Amy和 Zhang Peng的头饰向学生介绍引出单词:boy,girl,friend。2.利用单词卡片教学生认读单词:boys and girls, today, new friends。3.教师带头饰自我介绍:Hi,Im Amy. Im from the UK.借助国旗引导学生认识英国的英语名称。4.教师带头饰自我介绍:Hi,Im Zhang Peng. Im from Shandong.借助国旗引导学生认识英国、美国和加拿大的英语名称。5.教师点拨:英语中人名、地名和国家名称的首写字母大写的写法。the UK是英文缩写形式必须都大写,读作U和K。6.听课文录音,跟读对话。三、趣味操练(Practice)1.学生两人一组分角色练习对话。2.小组展示:表演对话。3. Look and say:看国旗,编对话运用句子:Im /Im from介绍自己及自己的情况。理解What about you?的含义。4.看图连线boy friend girl四、作业(Homework)1.仿照课文对话,自己创编对话并表演。2.选择(1)I_Amy. A.am B.is C.are(2)I am _ the UK. A.of B.from C.come(3)We _ two new friends today. A.has B.have C.having(4)介绍自己来自美国时,应说:A.Im from the USA.B.Im the USA.(5)介绍自己时应说:A.Im Amy. B.This is Amy.板书设计 Unit 1 Welcome back to school!We have two new friends today.Welcome back boy and girWe new friends today from Canada UK USAIm Zhang Peng. Im from USA .We have two new friends today.Hi, Im Amy. Im from UK.教学反思: 第二课时教学内容:A(lets learn lets chant)教学目标:1.能听说认读单词:UK,Canada, USA, China.主要通过情景对话学习介绍自己的国籍,并在实际情景中自然运用。2.借助国家的国旗和标志性建筑图片,帮助学生理解和认读国家名称。3.培养学生乐于模仿,敢于交流,更加热爱自己伟大祖国的热情。教学重点:国家名称的读音。教学难点:掌握Canada的单词正确读音。教 具:教师准备国旗和标志性建筑图片,还有常见的国家国旗。或是某个国家有代表性的物品。教学过程:一、热身/复习(Warm-up/Revision)1.Lets sing!2.日常口语练习Im .Im from Wuan.二、新课展示(Presentation)1.老师出示国旗图片,让学生认识,引出单词:UK, USA, China, Canada。2.认读单词。3.听录音或看课件认识不同国家的标志性建筑物,并跟读单词。4.学生小组讨论:这些图片中的建筑物名称及所属国家。5.小组活动:把图片和国家配对。看看谁最先完成。教师出示事先准备好的国家国旗和建筑物的图片等,一个人出示图片,另一个人说:Im from.让学生反复练习句子。6.听录音,跟读对话。三、趣味操练(Practice)1.两人一组用国旗或图片进行对话。2.Lets chant。听录音,跟着说唱。3.把图片和所属国家连线。USA China Canada UK四、作业(Homework)1.听课文录音,熟记单词和图片。2.对话连线:Nice to see you. Nice to meet you.This is my friend, Amy. Good afternoon.Good afternoon. Nice to see you.板书设计: Im from the UK.Boy girl we friends from Canada UK USA ChinaIm Amy. Im from the UK 教学反思: 第三课时教学内容:A (lets spell )教学目标:1.学习元音字母a在单词中的发音以及认读书写含有这个字母的单词。2.借助手势教学字母发音,归类识记单词。 3.培养学生良好的学习习惯。教学重点:掌握元音字母a的发音和单词的书写。教学难点:元音a的发音,引导学生认识字母有元音和辅音之分。教 具:字母卡单词卡教学过程:一、热身/复习(Warm-up/Revision)1.日常口语练习。2.复习上册书的有关字母A的Lets chant!二、新课展示(Presentation)1.教师出示字母卡并问:Whats it?An“ Aa”.Whats the sound of letter “A”?引导学生说出元音字母a在单词中的发音/。2.出示含有这个字母相同发音的单词图片。cat bag hand dad /3.放Lets spell部分的录音,学生跟读。4.小组学习:找一找还有那些单词中字母a的发音是/?5.小组汇报交流并总结。三、趣味操练(Practice)1.游戏:听一听,辩一辩。教师读一组单词让学生听一听找出那个单词中没有a/的发音。如:bag dad hand apple cake2.游戏:击鼓传花谁拿到花,必须说出一个含有字母a的单词。3.学写单词,并指导学生描红。四、作业(Homework)1.听录音,给家长读单词。2.读一读、听一听并圈一圈。(1)cat bag 2.bag dad (2)Canada panda 4. hand dad2.找出发音与众不同的单词。(1) bag cat cake dad(2)name plate Kate hand(3)China Canada cat ant三、判断下列对话正误,正确的打“”,错误的打“”。( )1、A:Where are you from? B: Im Mike.( )1、A:Good afternoon? B: Good morning.( )1、A:Whats her name? B: My name is Jenny.板书设计: Lets spella/:cat bag hand dad Canada panda教学反思: 第四课时教学内容:B (lets talk look and say Start to read)教学目标:1.能听说认读单词:Australia, Canada, USA, China.主要通过情景对话学习如何询问别人的国籍以及回答,并在实际情景中自然运用。2.借助国家的国旗图片,帮助学生理解和认读国家名称。3.培养学生乐于模仿,敢于交流。教重难点:1国家名称的读音。2句型Where are you from?Australia的发音。教 具:图片和单词卡片教学过程:一、热身/复习(Warm-up/Revision)1.Lets sing!2.日常口语练习:Im .Im from China.二、新课展示(Presentation)1.老师出示国旗图片,让学生认识,引出单词:Australia, USA, China, Canada。2.认读单词。3.听录音或看课件认识不同国家的国旗,并跟读单词。4.学生小组讨论:这些图片中的国旗的特点和颜色。5.小组活动:把国旗和国家单词配对。看看谁最先完成。教师出示事先准备好的国家国旗和单词图片等,一个人出示图片问:Where are you from?另一个人说:Im from.让学生反复练习句子。6.听录音,跟读对话。三、趣味操练(Practice)1.两人一组用国旗或图片进行对话。2.自己创编对话。3.小组表演展示。4.把图片和所属国家连线。 USA China Canada Australia四、作业(Homework)1.听录音跟读对话,熟记单词和国旗的特征。2.能力提升:(1)你想问对方来自哪个国家时,你可以问:A.Where are you? B.Where are you from?(2)Where are you from?A.This is China. B.I am from China.(3)3月8日,你想对你的妈妈说:A. Happy Teachers Day! B. Happy Womens Day!板书设计: B (lets talk look and say Start to read)Where are you from?I am from China/Canada/US/UK.教学反思: 第五课时教学内容:B (lets learn lets chant)教学目标:1.听说认读单词she,he,student,pupil,teacher.能理解人称代词he she的不同用法,并能灵活运用。2.借助图片和实际情况,帮助学生学习新单词。 3.培养学生合作学习的能力。教学重点:掌握单词的读音。教学难点:理解student和pupil的含义相同。教 具:字母卡、单词卡教学过程:一、热身/复习(Warm-up/Revision)1.日常口语复习:This is.2.复习boy和girl。二、新课展示(Presentation)1.教师利用简笔画画一个girl,引出句子She is a girl.She is Amy.帮助学生理解单词she。教师在补充:She is a student.出示单词卡片student(pupil),让学生猜单词的意思。2. 教师利用简笔画画一个大男孩,引出句子He is a big boy.He is Mr Jones.帮助学生理解单词he。教师在补充:He is a teacher.出示单词卡片teacher,让学生猜单词的意思。3.播放Lets learn部分的录音,让学生跟读。4.小组学习:看图片指认单词。5.单词游戏:看图片认读单词,比比谁读的又快又准确。三、趣味操练(Practice)1.游戏:看图片说句子,看看谁说的多。2.游戏:击鼓传花谁拿到花,必须用上英语单词he或she介绍自己的好朋友。3.听录音跟读Lets chant! 4.看图把有关系的单词和图片连线。he girl pupil boy teacher she 四、作业(Homework)1.听录音,给家长读单词和Lets chant!2.找出与众不同的单词。(1) he she you boy(2) student girl pupil teacher (3)China Canada Austrilia student板书设计: This is .She/He is a girl/boy.She is Amy. She/He is a student/pupil.He is a big boy.He is Mr Jones. He is a teacher.教学反思: 第六课时教学内容:B ( lets check lets sing ) C (story time)教学目标1.能听懂并理解story time中的情节和故事内容。2.借助课件和表演帮助学生加深对小幽默故事的印象。3.培养学生乐于模仿,敢于交流。教学重难点:理解故事内容,并能表演出这个小幽默。教 具:图片和单词卡片教学过程一、热身/复习(Warm-up/Revision)1.Lets sing!教材10页。2.日常口语复习句子Im a student.Im from Wuan.二、新课展示(Presentation)1.老师出示课文挂图,让学生猜想发生了什么事情。2.教师播放课文录音,让学生听2遍。3.学生回答教师的提问,Who are they?Who is clever?并说说故事大概意思。4.听录音,跟读故事内容。 教师点拨重点词汇和口语:play a game, clever,wait a minute,Can you read this?5.小组活动:小组成员分角色朗读课文,并排练故事内容。6.小组展示:小组上台表演故事,看看那组表演得好!三、趣味操练(Practice)1.Listen and number(10)2.Lets sing.3.Look and match.四、作业(Homework)1.读并判断对错。(1)This is John. He is my friend.( )She is my friend.( ) (2)This is Miss White. He is a techer. ( )She is a techer.( )(3) This is Zhang Peng. He is a student. ( )She is a student.( )2.读句子,排一排。( ) Nice to meet you. ( ) Good morning, Sarah. This is my friend, Amy.( ) Im from America.( ) Good morning, Mike.( ) Where are you from?板书设计: Unit 1 Welcome back to school!Where are you from? I am from .Im the teacher. Im the student This is .She/He is a girl/boy.She is Amy. She/He is a student/pupil.He is a big boy.He is Mr Jones. He is a teacher.教学反思: Unit2 My family第一课时教学内容:Lets talk教学目标:1能够听懂、会说、会认读单词:man, father, dad。2能够听懂、会说、会认读句型:Whos that man? Hes my father./ Hi, Dad.并能够在具体的语境中灵活运用。3能够听懂指令,按照指令的要求完成Point and say的内容。教学重点:掌握三会单词和句子。教学难点:能够理解和运用句型:Whos that man? Hes my father./ Hi, Dad.并能够听懂、会说、理解句子: This is my friend, Amy.教学准备:课件,照片,词卡教学过程:Step1 Warming up & Revision1.Enjoy a song” Who is she?”2.Sing a song “Boy and girl”.3.Lets chant:P8.4.Introduce my friends. 引导学生介绍自己的朋友。如:Hi, Im Sam. Im from China. This is my friend, Tim. Hes a boy. Hes a student. Hes from China/ the UK/ Canada/ the USA/ Australia.Step2 Presentation & Practice1.以旧带新,学习新知(Lets talk)(1)教师:呈现Mr Jones,问:Whos he?引导学生答: Hes Mr Jones.教师:Mr Jones is a man.(2)学习单词man,并扩展woman对比进行学习。2.词融于句,巩固新知活动1:呈现男教师的照片,让学生练说: Mr is a man.活动2:呈现男明星的照片,让学生练说:如Yao Ming is a man.3.Guess and learn(1)呈现教师自己爸爸的照片:Look, that is a man. Whos that man? Can you gusss? 教师出示答案:Hes my father.(2)学习father,并扩展mother对比学习。(3)对比father和dad的用法,并扩展mother和mom对比学习。4.Lets talk(1)呈现对话动画。(2)跟读对话,呈现新句型。(3)教学句子:Whos that man? Hes my father.(4)学生小组表演对话。Step3 Extension1.Sing a song:”Father and mother”.2.Point and say:同桌合作练习图中的对话。3.Guessing game:收集学生的爸爸照片,让学生猜一猜:Whos that man?是谁的爸爸,谁就快速回答:Hes my father.4.完成作业本相关作业。Step4 Summing up1.Words: 总结本课的三会单词man,father, dad.2.Sentences:总结本课的三会句子:Whos that man? Hes my father.3.Homework: (1)背诵对话。(2)读一读,并连线Man fatherMother momDad womanWhos that man? Hi, Amy.Nice to meet you. Hes my father.Hello, Dad. Nice to meet you, too.板书设计:Unit2 My family A.Lets talkWhos that man? Hes my father.man father dad教学反思: 第二课时教学内容:Lets learn教学目标:1.能够听、说、认读单词:woman, mother, mom.2.能够听、说、认读句型:Whos that woman? Shes a new teacher.并能够在具体的语境中灵活运用。3.能够听音跟唱本课chant。4.培养学生懂礼貌的好习惯,学会感恩。教学重点:掌握三会单词和句子:woman,mother,mom.以及Whos that woman? Shes a teacher.教学难点:能够理解和运用句型:Whos that woman? Shes a teacher.以及对于两会词new的理解和运用。教学准备:课件,录音机,磁带,照片,词卡。教学过程:Step1 Warming up & Revision1.Enjoy a song”Who is she?”2.Sing a song”Father and mother”3.Lets chant:Man, man, whos that man? Father, father, hes my father.Man, man, whos that man? Dad, Dad, hes my Dad.4.Free talk根据学生爸爸的照片,四人小组活动:Group leader: Whos that man?S1: Hes my father.S2: Hes my father. Hes tall.S3: Hes my father. Hes a teacherStep2 Presentation & practice1.学习新知(1)呈现Mr Jones,师生对话:T: Whos he? S1: Hes Mr Jones.T: Is he a man? S2: Yes, he is.呈现Miss White,师生对话:T: Whos she? S1: Shes Miss White.T: Is she a man, too? S2: No, she isnt.对比学习man和woman。(2)运用man和woman。如:Yao Ming is a man. Deng Yaping is a woman.教师呈现自己爸爸妈妈的照片,说My father is man. My mother is a woman. 对比学习father和mother。(3)自编歌谣:Man, man, my father is a man. Woman, woman, my mother is a woman.2.操练:用明星照片,让学生两人一组运用句型Whos that man?/ Whos that woman?3.家庭照片介绍T:This is my family. Do you know who ther are?鼓励学生提问。教师作答Shes my mother./ Hes my father.向学生解释mom和dad更多地用于日常口语中。4.Free talk(1)呈现课文动画,教学本课。(2)听音,跟读。(3)分多种方法朗读,练习对话。(4)小组表演对话。Step3 Extension 1.Lets chant.2.创设情景,展示对话。准备一些男女名人的照片(头饰),四人一组对话。如:S1: Whos that man?S2: Hes Yao Ming.S3: Hi, Yao Ming.S4: Hi! S3: Where are you from?3.完成课堂作业。S4: Im from China.Step4 Summing up1.总结本课所学的单词和三会句子。2.Homework(1)听音跟读本课单词和歌谣,并要求背诵。 (2)连线woman fathermother dadmom manhe she Whos that man? Shes my mother.Whos that woman? Hes my father.板书设计: Unit2 My family A.Lets learnWhos that woman? Shes my mother.woman mother mom教学反思: 第三课时教学内容:Lets spell教学目标:1.能够听、说、读、写单词:ten, red, leg , pen.2.了解字母e在闭音节单词中的发音。3.能够听懂指令,完成Read, listen and circle.4.培养学生认真观察、发现规律的能力。教学重点:掌握四会单词、字母e在闭音节单词中的发音。教学难点:能够灵活运用字母e的发音读新单词。教学准备:课件,录音机,磁带,词卡。教学过程:Step1 Warming up & Revision1.Enjoy a song”Who is she?”2.Lets chant.3.快速说单词:father-mother man-woman dad-mom4.Sing a song “Hickety, Pickety, My Black Hen”(此歌曲中包含很多含有字母e的单词,目的是为了让学生感知字母e在单词中的发音,为学生们的进一步学习做好了铺垫。)Step2 Presentation & practice1.Lets say:呈现Lets spell动画,让学生袄出四个单词的共同点:a.每个单词中都含有字母e。 b.每个单词中的e都读/e/。2.Spell and sing(1)呈现自拼规则:E, e, /e/ /e/ /e(2)用肢体语言表演这个自拼规则。(3)Sing a song “Elephant”。3.学习单词:(1) 根据拼读规则学习四会单词ten, red, leg, pen。(2)让学生体会字母e的发音,能够独立拼读简单的含有字母e的单词。如:egg, Ted, hen等。4.说短语或者句子:呈现本课的四个四会单词让学生自由说短语或者句子。如ten legs, a red pen, I have ten pens.等等。5.Read, listen and circle.6. Listen and write.Step3 Extension1.Play a game:让学生以小组为单位,分别介绍自己的家庭成员,介绍时,尽量要用上今天所学的四会单词。如:This is my father. He has two long legs. This is my mother. She has a red skirt.2. Lets chant: Pen, pen, a red pen. Leg, leg, ten legs. A red pen has ten legs.3. Learn a song: I love my family.4.完成作业本相关作业。Step4 Summing up1.总结本课的四会单词以及字母e 在闭音节单词中的发音。2.Homework(1)抄写四会单词一行,每行写4遍。(2)读一读,选出发音不同的单词( ) (1) A. leg B. pen C. me( ) (2) A. he B. ten C. pencil( ) (3) A. red B. we C. Ted( ) (4) A. hen B. egg C. she板书设计:Unit2 My family A.Lets spellten red leg pen (四线格) chant: Ten red pens, XXX(节拍) Ten red pens, XXX Eight pens, nice pens. Ten red pens. X x X x X xx. 教学反思: 第四课时教学内容:B.Lets talk教学目标:1.能够听、说、读单词:brother.2.能够听、说、读句型:Whos that boy? Hes my brother.并能够在具体的语境中灵活运用。3.培养学生善于交际的性格以及用英语思维的习惯。教学重点:掌握三会单词和句子。教学难点:能够听、说、理解句型:Is she your mother? Yes, she is. Is he your father? No, he isnt. Hes my teacher!具体的语境中熟练运用三会句子。教学准备:课件,录音机,磁带,词卡,照片。教学过程:Step1 Warming up & Revision1.Enjoy a song”Who is she?”2.Sing a song:”Boy and girl”3.Review the words:快速认读单词pen, ten, leg, red。并让学生体会字母e的发音,尽量让学生说说其他含有字母e,读/e/的单词。4.Play a game: Whats missing?呈现单词:pen, ten, leg, red, mother, father, dad, mom, woman, man, brother,让学生认读后,抽出一个单词,让学生猜哪一个单词不见了。Step2 Presentation & practice1.Lets guess(1)呈现教师自己弟弟小时候的照片。问:Whos that boy? Guess, please!(2)让学生猜测,最后教师给出答案:Hes my brother.2.学习新知 呈现Lets talk对话动画。播放录音,学生跟读感知对话。然后学习brother一词。对比学习:brother, father, mother.3.Lets discuss(1)呈现对话:Is she your mother? Is he your father?(2)让学生就对话中的Your mother? Your father?展开讨论,说说自己对这句话的理解。(3)教师教学句子:Yes, she is. 并延伸到No, she isnt. Yes, he is./ No, he isnt.(4)呈现一些学生爸爸妈妈的照片,在教师引导下看照片作对话。T:Whos that man/ woman?T: Is she your mother? / Is he your father?S:Yes, he/ she is. / No, he/ she isnt.4.Lets practice用笑脸和哭脸来操练Is she/ he ? Yes, she/ he is. / No, she/he isnt.Step3 Extension 1.Lets chant:Whos that? Whos that? Whos that boy? Brother, brother. Hes my brother.Whos that? Whos that? Whos that man? Father, father. Hes my father. Whos that? Whos that? Whos that woman? Mother, mother.Shes my mother.2.Lets play 呈现该部分动画,让学生熟悉会话内容,然后两人一组,用自己家人的照片进行自由会话。3.Free talk: Whos that boy/ girl?Guess.Is she your mother? / Is he your father?Yes,she/ he is./ No, she/ he isnt.He/ she is4.完成作业本相关作业。Step4 Summing up1.总结本课所学的三会单词和三会句子。2.Homework:(1)背诵对话。 (2)读一读,并选择( )(1)-Whos that man? -_A.Hes my father. B.Shes my mother C.Its my brother.( )(2)Who is _woman?A. it B.this C. that(3)给句子排序,组成一个完成的对话。(1)Shemy mother.(2)No, she isnt. (3)Guess!(4)Is she your sister?(5) Whos that woman?_板书设计:Unit2 My family B.Lets talkWhos that boy? Hes my brother.Is she your mother? Yes, she is.Is he your father? No, he isnt. Hes my teacher!教学反思: 第五课时教学内容: BLets learn教学目标:1.能够听、说、认读单词:sister, grandmother, grandma, grandfather, grandpa, family.2.能够听、说、读句型:This is my family. This is my grandpa.并能够在具体的语境中灵活运用。3.能够听音跟唱本课的chant。4.培养学生要尊敬老人、团结友爱的品德。教学重点:掌握三会单词和句子。教学难点:能够在具体的语境中灵活运用句型:This is教学准备:课件,录音机,磁带,词卡,照片。教学过程:Step1 Warming up & Revision1.Enjoy a song”Come and see my family”2.Lets chantThis is mother, kind and dear.This is father, standing near.This is brother, see how tall.This is sister, not so tall.3.Free talk(1)呈现上节课的Lets talk,让学生听音,模仿、学说两遍。
展开阅读全文
相关资源
相关搜索

当前位置:首页 > 图纸专区 > 小学资料


copyright@ 2023-2025  zhuangpeitu.com 装配图网版权所有   联系电话:18123376007

备案号:ICP2024067431-1 川公网安备51140202000466号


本站为文档C2C交易模式,即用户上传的文档直接被用户下载,本站只是中间服务平台,本站所有文档下载所得的收益归上传人(含作者)所有。装配图网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。若文档所含内容侵犯了您的版权或隐私,请立即通知装配图网,我们立即给予删除!