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英语复习教案高三

时间: 沐钦 英语教案

英语复习教案高三如何写?一些拥有多种土著语言的新独立国家选择继续使用英语作为官方语言,以避免将任何一种土著语言都推崇为另一种土著语言所固有的政治和其他困难。下面是小编为大家带来的英语复习教案高三七篇,希望大家能够喜欢!

英语复习教案高三

英语复习教案高三【篇1】

设计理念:

1.新课程下的英语教学倡导充满情趣、真实的人文型的课堂,让学生在浓郁的人文气氛中感受、习得语言,发展能力。语言运用能力的培养重在应用,在亲身经历中体验、感悟,在实践中发展能力。为此,在综合拓展练习时,我设计了“小小督导员”的活动,重在让学生在创设的与生活相关的语言情境中去感悟,并运用英语。

2.《义务教育英语课程标准》明确要求小学生英语教学任务之一是培养学生初步的语感和良好的朗读、阅读习惯。本课的教学活动设计,我注重了学生对于发出指令的祈使句的朗读训练和语气感悟。并在最后设计一个趣味阅读练习,以培养学生良好的阅读习惯。

3.《义务教育英语课程标准》指出:“英语课程的学习,既是学生通过英语学习和实践活动,逐步掌握英语知识和技能,提高语言实际运用能力的过程;又是他们磨练意志、陶冶情操、拓展视野、丰富经历、开发思维能力、发展个性和提高人文素养的过程。”为此在本课的综合拓展练习时,我所选择的情景图画使学生熟悉的身边的生活场景,目的是能够很好的锻炼和培养学生良好的行为习惯,利用这个契机对学生进行情感教育。

教学目标:

1.知识目标:学生掌握语句Stop! Don’t go! Go!It’s green now. Don’t ride your bicycle here.

2.能力目标:学生学会口头运用Stop! Don’t go! Go!It’s green now.等语句发出指令。

3.情感目标:培养学生自觉遵守交通规则的习惯。

教学重点:

1、能听懂Don’t ride your bicycle here.这类指令。能口头运用Stop! Don’t go! Go!It’s green now.这类语句发出指令。

2、祈使句的读法。

教学准备:

录音机、课本第一部分的录音材料和标志图话、学生生活的情景图画

教学过程:

一、Warming up.

A game.

教师组织学生一起玩“Simon says”的游戏。首先教师发出口令,然后请一名学生担当教师角色。

T:Boys and girls,now let’s play a game“Simon says”。 Listen to me carefully.“Stand up, please. Turn left/right/back/north/south/west/east.”Now, who can say as me?

(设计意图:通过组织游戏,既可活跃一下课堂气氛,又可复习巩固祈使句的用法。此外在游戏中,尽量多的运用“left, right”等词,又可为本课的学习做好准备。)

二、Presentation.

1.Lead in.(精讲点拨)

教师出示指挥交通的图片,并向学生提出问题。“Do you know what dose it mean?”学生根据图片动作逐一进行回答:“Turn left. Turn right. Go straight on. Stop!”

教师出示课本第一部分的交通标志图,请学生用英语说一说它们代表什么意思。(T:I have more pictures. Can you tell me something about it?)学生可能对其中的一些标志图不是很了解,教师可告诉学生本节课结束后,你将会很流利的说出。(T: Don’t worry. You may say it very well after this class.)

(设计意图:用指挥图导入,能够很好的与本课的教学内容进行衔接,教师能够很自然的呈现本课的交通方面指示语的图画。另外,在学生遇到障碍后,给学生的鼓励的同时,也提出了本课教学目标。)

2.Listen and find.

教师首先让学生对图片的内容进行讨论,然后教师放录音,请学生边听边指向对应的图。教师放地二遍录音,进行检查,并让学生重复。学生听第三遍录音,完成课本第二部分的活动。

(设计意图:先让学生熟悉一下图片内容,学生能够很好的指向正确的图话。在听与指的过程中是对学生听力及反应能力的一种很好的锻炼。)

教师出示课本第一部分的图画,请学生快速说出对应的句子。

3.Listen and repeat.

教师出示课本第三部分的句子,让学生根据前几节课的知识自己先朗读。然学生对比自己的语气和升降调。

教师再次放录音,让学生跟读、模仿,并简单讲解祈使句的读法。(祈使句一般表示直接的命令、建议、告诫、邀请等多种意图,再读法上侧重读最后一个单词,读降调用以强调。)

(设计意图:学生已经接触过语调方面的知识,先让学生自己朗读,然后再对比录音,学生的学习印象更为深刻,更利于掌握。让学生掌握一点语音规则,对于他们的自学能力的培养有很大的帮助。)

三、Practice.

1.Who can read it?

教师出示一些祈使句,让学生站起来朗读,对于读的好的进行奖励。读的不正确的请其他学生帮忙纠正。之后在小组内进行朗读比赛。

Don’t put it on the table.

Please make the bed.

Please open the window.

Don’t close the door.

Don’t ride that horse.

(设计意图:在掌握了简单规则后,进行简单巩固练习,帮助学生进一步巩固所学知识,此外还能让学生更好体会英语学习成功的快乐,帮助学生进一步树立学生学习的自信心。)

2.Where is it?(巧问质疑)

教师请一名学生先走出教室,把一件物品藏在教室的某个地方,然后请学生回到教室试着找出所藏物品。首先由教师发出指令给学生提供线索,然后让他其他同学寻求帮助。

Eg:T: Walk to Song Shan.Go straight on. Then turn left.

S:Can you tell me more?…

(设计意图:通过找一找的小游戏,帮助学生进一步练习关于方位指令的祈使句的用法。让学生实际练一练,在教室里走一走能很好的体会、运用。比单纯的口令练习效果更好。)

四、Development.

1.小小督导员

教师出示几幅生活中的情景图,让学生以“小小督导员”的身份对其中的人物进行劝诫。

首先让学生对情景进行讨论,然后以小组为单位选一情景进行表演。

(设计意图:学生熟悉的生活情景,很容易让他们参与进来,也很利于他们发挥自己的运用能力。在给学生创设了练习与运用英语的学习情景的同时,也是对学生进行思想教育,培养正确的行为习惯的很好的契机。)

2. Read it and have a test.

It is a rainy day. A man gets on a bus with a dog. It is a big dog. Its feet are very dirty.The man says,“Condutor(售票员), if I buy a ticket for my dog, can he have a seat like the other people?”

The condutor looks at the man and then he says,“Of course,sir. He can have a seat like all the other people on the bus, but he must not put his feet on the seat like the other people on the bus.”

T or F

(1)The man gets on a bus with a small dog.

(2)The dog’s feet were very dirty.

(3)The mam wants a seat for his dog..

(4T)he conductor would like to give a seat to his dog.

(5)The dog sits down at last.

(设计意图:本节课的知识内容不是很多,在一定的练习巩固之后,我设计了趣味阅读。并在阅读的同时对学生提出建议和要求。既可调节一下课堂气氛,又可在课堂上进行阅读练习,培养学生良好的阅读习惯。)

五、Summary.(有效反馈)

学生进行简单小节,说一下自己的课堂收获,教师进行概括补充。

六、Homework.

List some rules about how to learn English well.

Eg: Please listen to the teacher.

Please speak English in class. …

英语复习教案高三【篇2】

教学目标

1. 语言知识目标:

1) 能掌握以下单词: newspaper, use, soup, wash, movie, just

能掌握以下句型:

① —What are you doing? —I'm watching TV.

② —What's he doing? —He's using the computer.

③ —What are they doing? —They're listening to a CD.

④ —This is Jenny. —It's Laura here.

2) 能掌握语法:现在进行时态的用法。

3) 能运用所学的知识,描述人们正在干的事情。

教学重难点

1. 教学重点:

1) 词汇、词组搭配和现在进行时的用法。能用现在进行时的各种形式进行准确的描述和表达正在发生的动作。

2) 能掌握现在进行时态及一些表示具体动作的词组搭配,如: doing homework, using the computer, watching TV, eating dinner… 等

2. 教学难点:

现在进行时中现在分词的结构及读音,能在交际中准确地运用现在进行时来描述或表达正在进行的动作。

教学工具

多媒体

教学过程

Ⅰ. Warming-up and Lead in

1. Greet the Ss and check the homework.

2. Watch a video program.

Ⅱ. Presentation

1. Show some pictures on the big screen. Present the new words and expressions.

2. Ss watch and learn the new words and expressions.

3. Give Ss some time and try to remember the new words and expressions.

4. (Show some pictures on the screen and ask some students to perform the actions.)

e.g. T: What are you doing?

S: I am doing homework. (Help him/her to answer)

T: What is he /she doing?

Ss: He /she is doing homework.

Teach: watching TV, cleaning, reading a book, eating dinner, talking on the phone...as the same way.

5. Work on 1a. Ss read the activities and look at the pictures. Then match the activities with pictures.

6. Check the answers with the Ss.

Ⅲ. Game (guess)

1. T: Now let's play a game. What's she/he doing? You must watch the big screen carefully.

(Show some pictures on the big screen quickly) Let Ss guess what's he/she is doing?

2. Ss watch and guess the actions.

3. Ask and answer about the pictures.

—What's he/she doing?

—He's/She's …

Ⅳ. Listening

1. T: What are Jenny, John, Dave and Mary doing? Now let’s listen to the tape, find out the right activities from 1a.

2. Play the recording for the Ss twice.

3. Ss listen to the recording and write the numbers from 1a.

Ⅴ. Pair work

1. Ask the Ss to read the conversations in 1c with a partner. Then look at the pictures in 1a. And conversations about other person in the picture.

2. Ss make conversations by themselves and practice the conversations.

Ⅵ. Listening

1. Work on 2a;

T: Jack and Steve are talking on the phone. What are they doing now? Listen to the conversations and match the answers with the questions.

(Play the recording for the first time, students only listen carefully. Then, listen to the recording again, and match the answers with the questions. )

Check the answers.

2. Work on 2b.

Let Ss read the conversation in 2b first. Then play the recording for the Ss twice.

The first time Ss only listen and write down the words in the blanks. Then play the recording again for the Ss to check the answers. (If necessary, press the Pause button to help.)

Ⅶ. Pair work

1. Now, role-play the conversation with your partners.

2. Let some pairs to act out the conversation in front of the class.

Ⅷ. Role-play

1. Ask Ss to read the conversation in 2d and answer the questions below.

① Are Jenny and Laura talking on the phone?

(Yes, they are.)

② What's Laura doing now?

(She's washing her clothes.)

③ What's Jenny doing?

(She's watching TV.)

④ When do they meet at Jenny's home?

(At half past six.)

2. Ss read the conversation and answer the questions above.

3. Check the answers with the Ss.

4. Let Ss work in pairs and role-play the conversation.

Homework:

1. Review the words and expressions in this period.

2. Understand the knowledge about the present progressive tense.

3. Make five sentences on what are you doing now.

英语复习教案高三【篇3】

教学目标:

知识与技能目标:

1.学生能过灵活掌握有关做家务的动词短语并能应用到日常对话中。

2.掌握祈使句的构成方法及其答语。

情感目标:

1.如何有礼貌地请求别人帮助自己做某件事。

2.能够通过活动培养学生主动做家务的意识和养成勤劳的好习惯。

教学重点:

1.本课所有动词短语的正确发音和使用。

2.能较熟练地应用动词短语构成的祈使句。

教学难点:

每个学生都能掌握所授内容,做好能听.会说.能读。

教具准备:

1.PPT。

2.单词卡片。

3.小礼品。

教学过程:

1.日常口语会话展示

T:Hello,boys and girls.How are you today?

S:I am fine,thanks.And you?

T:I am fine,too.

2.游戏“摸鼻子”

3.教授新课

①出示make the bed图片。

T:Class,look at the picture.What is he doing?

Ps:…

T:He is making the bed.(出示短语,教读,注意确保学生读音准确无误)

带读几遍之后,随即快速的抽取部分同学进行检查。

②以下四个短语与上述方法相同。

③教读。

④集体齐读短语。

⑤使用地雷游戏进行教读。

⑥教授手持卡片,每个小组读一个短语,3-5次。比赛哪个组读得准确又整齐。

⑧操练短语。

采用boys PK girls的游戏方法。抽男.女生各两名读短语,给胜利的一方画笑脸,输的一方画哭脸。

4.教授句型

①出示对话图片,帮助学生理解并运用新句型。

②教读。

③带动学生,用本课所学单词进行替换练习。

④T:Class,do you help your mother do housework?Now,I am your mother.I am doing housework.Try to be good and help me.

P1:Mom,can I help you?

T:Good boy!Yes,please make the bed.

P1:OK./All right.

T:Good boy!Thank you.

每个单词都要拉进句子里进行操练。

⑤教师手持短语卡片,并询问学生Can I help you?学生根据卡片内容回答。

⑥学生两人一组操练句型,然后抽部分学生展示操练结果,并发给每位学生一个小奖品作为奖励。

5.小结本课

T:Boys and girls,what did we learn today?

Ps:……(引导学生回忆本堂课所学知识)

总结这堂课所学的短语全是与做家务有关,提示学生要热爱劳动,热心助人!

6.道别

在歌声中结束本堂课。将《Teddy Bear》里面的一些短语用今天学的短语改编。

Teddy Bear,Teddy Bear,turn around.

Teddy Bear,Teddy Bear,clean the ground.

Teddy Bear,Teddy Bear,set the table.

Teddy Bear,Teddy Bear,say"Good bye"!

英语复习教案高三【篇4】

教学目标:

(一)认知目标

1)能听懂、会说并能熟练使用单词hurry, rule, line, CD以及词组 library card, in line

2)能听懂、会说并能熟练使用句子Don’t talk in the library. Please stand in line.

3)能初步了解掌握祈使句的肯定形式与否定形式的句式结构 。

(二)能力目标

1)能够根据指令做事。

2)能够使用祈使句发出指令,从而要求或制止他人做某事。

3)能够初步运用语言做事(听说读写)。

(三)情感态度目标

1)养成遵守规章制度的好习惯,培养好公民的素质。

2)能够积极参与语言实践活动,树立信心,团结协作,获取成功体验。

教学程序:

一、热身复习

A、全班朗诵表演韵律诗“Do you want to go to the sea?”

B、用“brainstorm”的方式复习学过的动词(talk,stand,run,speak等)并表演出来。目的在于活跃气氛,激活旧知识,为新知做铺垫。

二、任务呈现与课文导入

A、播放教师录的校园违规录象,问学生该不该这样做,怎么做才是对的,引导学生说出“Please listen to the teacher! Don’t run on the stairs!”之类的祈使句,教师板书在黑板上。

B、询问学生还知道学校的哪些行为规范,可拓展到不同场合的规章制度,引导学生尽量用英语表达。

C、询问学生图书馆会有哪些规章制度,学生可能无法用英语很好表达,告诉学生:今天的课文就是关于图书馆中的规章制度的。学完后,大家要试着给学校的一间公共教室制定一份规章制度,例如:阅览室、计算机室、语音室、音乐教室等。

三、课文学习

A、通过教学VCD,整体呈现课文内容。要求学生理解课文大意,

B、看书听录音。要求找出带有“Please…”和”Don’t…”的句子,并试着说出来。教师板书。

C、再看书听录音,要求学生总结“Library Rules”,教师将板书补充完整。并告诉学生在图书馆要自觉遵守这些规定。

D、教师针对课文内容进行提问,从而引出hurry, rule, line, CD以及词组 library card, in line的学习。

E、进行词汇的拼读、书写、口头运用训练。

F、读板书的句子。加以总结,让学生明确“Please…”和”Don’t…”的含义及语用功能。引导学生归纳其句型结构并在情境中加以口头巩固。

G、看SB活动2的图,让学生试着根据插图展开对话。听音跟读重点句式。

H、完成AB E1的书写任务。

I、以小组为单位表演对话,评出“表演小组”。

J、全班完成SB活动3,执行录音中发出的指令,进行淘汰赛。

K、结合AB E2开展“Simon says”的游戏。

L、两人一组完成AB E3。 学生可先讨论,再填写完成。

四、任务完成

以小组为单位试着给教室制定一份英文规章制度。先讨论制度内容,再书写整理,制作成提醒卡。

全班交流并总结“Class rules”,并告诉学生这是大家共同制定的,要自觉遵守,互相监督,养成自觉遵守规章制度的好习惯。

英语复习教案高三【篇5】

教学内容:

This lesson is about Module 7 Unit 1 “This dog can help him.” of New Standard English, Book 9. This lesson is for the students of Grade Five.

教学目标:

1、Knowledge aims:

a. To enable students to master and use these new words : blind , special.

b. To enable students to master the usage of “can” .

c. To enable students to use the target sentences correctly : This dog can help him . Can Fifi help the blind people ? No , he can’t . He only wants to play .

2、Ability aims:

a. Talking about abilities with “can” , “can’t ” and know the objective case.

b. To improve students’ language ability.

3、Emotion aims:

a. To encourage students to cooperate with the others , help each other and learn from each other.

b. To educate students to protect animals and help disabled people .

教学重点:

To master and use the new words , sentence pattern and the usage of “can”。

教学难点:

To use the sentence patterns to talk about ability.

教学准备:

cards , CD-ROM, CAI, task-paper, tape—recorder.

教学过程:

Step1. Warming up

1、Greeting.

2、Please sing a song and do the actions.

3、Look and say some phrases more .

4、Free talk. What can you do ? Or what can’t you do?

Step 2. Presentation

Dear boys and girls, Do you love animals?

We can see some dogs and cats in our life. What can they do ?

Today we’ll learn Module 7 Unit 1. ( Write on the blackboard)

Step 3. Practice

1、Listen to the text and try to answer the questions:

Q1: How many dogs are there in the text? Answer the question------2 dogs.

2、Show Ss by PPT:Look at this dog. Is this dog lovely? It’s a pet dog. Its name is Fifi. Look at the other one.

Is it lovely? It is very special. Learn special(Pay attention to the pronunciation of “e”)

3、Show Ss a picture of blind people by PPT and ask “What’s the matter with this man ?”Learn blind

4、Who can help him? Look! This dog can help him. (Write on the blackboard.) Learn the target sentence. (Read in the different ways. ) Pay attention to “ him”。

Learn the usage of objective case . Then do a practice .

a. My mum is ill. I will help__. (she her)

b. Who can help __? ( I me)

c. The boy is cute. Dad bought a pen for___. (him he)

d. These are blind people. But Fifi can’t help_____. (they them)

5、Listen again and circle “can, can’t” . Answer the question:

Q2:Can Fifi help the blind people?

6、Learn the sentences: Can Fifi help the blind people? No, he can’t. / Yes, he can. (read in pairs )

Fifi is a pet dog. So he only wants to play. Read this sentence.

Pay attention to “wants”。 (Learn the third person singular of the simple present tense.)

Read the target sentences on the blackboard. Let’s sum up the usage of “ can ”。

7、Development activities : read these sentences and feel the usage of the original form of verbs.

a. Let’s see.

b. I will go to school tomorrow.

c. He is going to swim.

d. I want to drink water.

8、Listen to the text and repeat.

9、Read in roles. Learn TV presenter.(毕福剑) Who wants to be Lingling/ Amy/ TV presenter?

Step 4. Production

1、Dogs are very clever. What about the other animals? Let’s see. Try to say“ This… can/ can’t…”

2、Guessing game. Try to say “ This…can/can’t…” Guess “ Can...?”

3、Do some practice. (Task paper)

4、Reading practice : There is a TV show.

This is the TV presenter---- little pig. Please read and complete.

5、Talk about your pet . What’s your favourite animals ?

Please talk about your pet.

Step 5. Summary and homework

1、Sum up:What have we learned today?

2、Homework:

Copy the key words and the target sentences for 3 times.

Write a passage about your pet.

3、There are many disabled people in our life. Let’s have a look. Show them some pictures of disabled people who named TaiLihua, Yangguang, LiuWei and PingYali etc.

They are broken in health but not in spirit .

4、Learn English proverbs:

a. Broken in health but not in spirit.

b. Be the useful to the society.

板书设计:

Module 7 Unit 1 This dog can help him.

special Can Fifi help the blind people?

blind No, he can’t. Yes, he can.

He only wants to play.

英语复习教案高三【篇6】

教学目标:

1. Knowledge aim

Learning the new words and sentences just like angry/frightened/happy/proud/sad/shy/tired/The boy feels sorry/The girl feels sad /The boy is angry/The boy is proud /The girl feels shy/The boy feels frightened/The boy is tired/The girl is happy and so on.

2. Ability aim

Improve the students Oral English and let students know something about expressing feelings.

Let the students can make communication with each other.

3. Moral aim

We must attend the class seriously.

重点难点:

Expressions and sentences

教法提示:

Reading. /Listening. /Talking. /Singing.

Play Games. Making actions.

教学准备:

Some cards. CAI. Some objects.

教学过程:

Step1

Learn Part D: Let us write

Step2

Do the exercises and check the answers.

Step3

Let’s have fun.

Step4

Watch VCD.

英语复习教案高三【篇7】

教材分析:

本课是新标准英语三年级起点第五册第四模块第一单元《It’s mine》。本单元主要学习物品所属和名词物主代词的表达方法。学生通过学习掌握mine、yours、argue、matter等单词。掌握并灵活运用句型It’s mine./It’s his/It’s lingling’s./It isn’t his 来达到学习目的。

教学目标:

基于学生的实际学习水平,新课标的具体要求和本册教材的特点,我将教学目标设计如下。

1.知识目标:学生理解并掌握单词mine、yours、argue、matter、wear等。

2.能力目标:学生能够运用所学句型对自己或他人的所属物品进行描述。

3.情感目标:学生在活动中学会运用所学知识进行交流,并在交流中学会与他人合作,敢于开口说英语的能力。

教法学法:

1.从儿童的年龄特点、学习兴趣和好奇心求知欲考虑,根据小学生的心理特征。我借助“任务型”教学模式,以听说、游戏活动为主线组织教学,并通过小组合作,角色扮演等来加深对学习内容的理解,培养综合运用英语的能力。

2.学生通过游戏和小组活动,使他们在交际中理解和运用语言,促进学生听、说、读的练习,是学生在快乐的学习氛围中学到更多知识。

教学过程:

一、Warming-up 热身环节

在这一环节中我设计了一个chant,由学生共同拍手来完成。

I I I ,my my my

He He He, his his his

热身环节是英语教学过程的首要环节。采用节奏感很强的chant不仅能够凝聚学生的注意力,还能提高兴趣,将学生很快的带入到学习氛围中。同时复习了以前学过的主格代词和形容词性物主代词,引出了新知识名词性物主代词,为下面的学习做好了铺垫。

二、presentation 新知呈现

首先,我拿起自己的书,问学生Whose book is it? It’s my book.可用It’s mine.来代替,然后带领学生多读几遍,练习这个句型。再拿起Mingming的铅笔盒,询问LingHang(学生)Whose pencil-box is it?引导学生回答:It’s Mingming’s pencil-box.告诉学生It’s Mingming’s pencil-box 可用It’s Mingming’s 来代替,用同样的方式教授his、hers。

接下来是课文教学

首先,让学生听一遍录音,理解课文大意,并让学生初步感知语音、语调。让学生再次听录音,跟读课文,回答我提问的问题。

It’s Amy’s T-shirt? No,it isn’t.

What colour is Sam’s T-shirt? It’s red.

让学生听第三遍录音,并且跟读,录音播放完毕后,请2~3名学生分角色朗读课文。

本环节是新知识的呈现和练习,充分利用课堂中有限的资源,给学生创设了一种真实的教学环境,培养了他们的兴趣。这样,让学生在快乐的过程中不知不觉地掌握了本课的重点句型。反复的听读课文,加强了学生对课文的理解和记忆。

三、Practice 趣味操练、巩固新知

用多媒体课件呈现Prat 3 的四幅图片,图下面分别注明Ms Smart’s sweater Lingling’s skirt Amy’s skirt Sam’s trousers分别显示。老师问学生答或者学生问学生答,来练习句型Is this Ms Smart’s sweater? Yes,it’s hers./No,isn’t hers.

这一句型也是本课的重点,是一种否定表达方法。这样师生合作完成教学曾今了师生之间的感情达到了师生互动、生生互动的效果。 本环节通过反复练习巩固并掌握了所学知识,小组合作联系培养了学生的合作交流能力。

四、Consoludation 拓展延伸

把学生分成四个小组,各组学生把在家带来的书包、外套、裙子等物品放在一起,利用今天所学的句型进行对话,找出物品的主人。如果找对了物品的主人就给小组加分,进行奖励,还可以去别组给物品找主人。

拓展延伸对于学生更好地理解和御用所学知识具有重要作用,它有利于开发学生思维,提高英语的交际运用能力,培养了学生的学习兴趣。

五、Summary and Homework

带领学生一起回顾本节课所学的重点单词和句型。

让学生将各种熟悉的物品画在一张纸上,并且用英语标明这个物品是谁的。让学生自己动手画,培养了学生的动手能力,也进一步巩固了所学知识。

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