仁愛九年級(jí)英語上冊(cè)教案

1、仁愛英語九年級(jí)上冊(cè)教案Unit 1 The Changing WorldTopic1 My hometown has become more and more beautiful.Section AThe main activity is 1a. 本課重點(diǎn)活動(dòng)是1a。. Teaching aims and demands 教學(xué)目標(biāo)1. Learn some new words and a phrase:proper, by the way, bell, grandpa, chairwoman, grandson2. Learn a useful sentence:There goes the

2、bell.3. Learn the present perfect tense:(1)Rita, you have just come back from your hometown.(2)Where have you been, Jane?I have been to Mount Huang with my parents.(3)By the way, wheres Maria?She has gone to Cuba to be a volunteer4. Talk about the childrens vacation experiences. Teaching aids 教具錄音機(jī)/

3、小黑板/學(xué)生的旅游紀(jì)念照/圖片/幻燈片. Five-finger Teaching Plan 五指教學(xué)方案Step 1 Review 第一步 復(fù)習(xí)(時(shí)間:7分鐘)通過教師詢問學(xué)生的暑期活動(dòng)，導(dǎo)入話題，呈現(xiàn)部分生詞。T: Listen! The bell is ringing. Lets begin our class! (教師解釋The bell is ringing等于There goes the bell，板書bell，要求學(xué)生掌握。)bellT:Nice to see you again. Did you enjoy your summer holiday?Ss:Yes. T:Hi, S

4、1, where did you go during your summer holiday?S1:I went to T:S2, did you go to your grandpas home?S2:Yes.(板書grandpa，要求學(xué)生掌握。)grandpaT:S3, where did you go?S3:I went to the West Lake with my father. T:Wow! The West Lake is a beautiful place. What did you do there? S3:I enjoyed the beautiful scenery,

5、took photos and bought many beautiful postcards. T:S4, what about you?S4:I had to stay at home to help my mother with the housework. T:Oh, I feel glad for what you did, and I think youre a good girl. Youre helpful. S5, did you go to summer classes?S5:Yes, I did. I went to an English training school

6、to improve my English. I think the English training school is a nice place for me to improve my English. T:Yes. The English training school is a proper place to improve your English.(板書生詞，請(qǐng)學(xué)生猜漢語意思并領(lǐng)讀，要求學(xué)生掌握。)properT:OK, you all had a good summer holiday. What about Kangkang and his friends? Lets com

7、e to the new unit now.Step 2 Presentation 第二步 呈現(xiàn)(時(shí)間:15分鐘)創(chuàng)設(shè)語言情境，呈現(xiàn)have/has been to和have/has gone to及部分生詞。 1. (創(chuàng)設(shè)對(duì)話情境。Mr. Smith星期六組織Class 2去野營，大家在校門口集合時(shí)發(fā)現(xiàn)Jim沒來。師生對(duì)話，呈現(xiàn)have/has gone to)Mr. Smith: Hello, everyone! Jim isnt here. Where is he?S1:Maybe he is at home.S2:Maybe he is ill.Mr. Smith: No. He ha

8、s gone to Beijing to be a volunteer.(板書并讓學(xué)生了解volunteer，教師適當(dāng)講解have/has gone to的用法，并讓學(xué)生初步掌握。)have/has gone to, volunteer(假設(shè)星期一Jim返回學(xué)校，Mr. Smith和Jim展開對(duì)話，呈現(xiàn)have/has been to。)Jim: Good morning, Mr. Smith.Mr. Smith: Good morning, Jim. You have just come back from Beijing. How was your trip?Jim: Cool!Mr. S

9、mith: I think you have been to many places of interest.(板書并適當(dāng)講解，要求學(xué)生初步掌握。)have/has been to(教師可用簡筆畫呈現(xiàn)have/has been to和have/has gone to，講解它們的區(qū)別并要求學(xué)生掌握。)2. (師生對(duì)話，簡單操練have/has been to和have/has gone to的用法。) (教師特意讓S3去辦公室取作業(yè)。) T:Did you have a good summer holiday, S4? S4:Yes. T:Where have you been? S4:I ha

10、ve been to T:By the way, where is S3? S4:He has gone to the teachers office.(板書by the way，要求學(xué)生掌握。)by the way3.(播放1a錄音，回答小黑板上呈現(xiàn)的問題。以聽力的形式呈現(xiàn)1a的主要內(nèi)容。)T: Now, listen to 1a. Kangkang and his friends are talking about their different experiences during the holiday. Answer the following questions on the sm

11、all blackboard:(出示小黑板。)(1) Who has just come back from India?(2) Where has Jane been?(3) Where has Kangkang been?(4) Who isnt at school?T:From 1a, we know someone has just come back from India. Who is she?(教師加重語氣讀has just come back。)S5:Rita. T:Yes. You have the right answer. Rita has been to her hom

12、etown in India in her summer holiday. But now she is in China. We can say she has been to India. Where has Jane been?S6:Mount Huang. (教師引導(dǎo)學(xué)生用現(xiàn)在完成時(shí)表達(dá)。)T:Yes. She has been to Mount Huang. Where has Kangkang been?S7:He has been to an English summer school. 4. (重放1a錄音，總結(jié)重點(diǎn)句型并板書。)T:Listen to the tape aga

13、in. Then talk about what they have done. Rita has just come back from India. She has been to Jane has been to Kangkang has been to Maria isnt at school. She has gone to Step 3 Consolidation 第三步 鞏固(時(shí)間:10分鐘)鞏固1a，完成1b，并引導(dǎo)學(xué)生區(qū)別一般過去時(shí)與現(xiàn)在完成時(shí)。1. (讓學(xué)生分角色讀對(duì)話，教師巡視并糾正學(xué)生發(fā)音。) T:Read 1a in roles. Pay attention to y

14、our pronunciation.2. (學(xué)生獨(dú)立完成1b的表格。師生共同核對(duì)答案，鞏固現(xiàn)在完成時(shí)have / has been/gone to這一基本句型。)T: Now, please fill in the table in 1b according to 1a. 3.(由1a對(duì)話引導(dǎo)學(xué)生談?wù)撌钇谏?，繼續(xù)鞏固現(xiàn)在完成時(shí)。) T: Kangkang has been to an English summer school to improve his English. Rita has been to India. What about you? Where have you been

15、? And what did you do? Please work in groups of three to talk about your summer holidays. (學(xué)生三人一組進(jìn)行問答。) T:Who will try to act it out in front of the class? (挑幾組學(xué)生進(jìn)行表演，并對(duì)學(xué)生進(jìn)行適時(shí)指導(dǎo)和鼓勵(lì)。)Example:S1:Where did you go last Summer holiday?S2:I went to the West Lake.S1:(指S2問S3)Where has he been?S3:He has been

16、 to the West Lake.S1:What did you do there?S2:I went boating on the lake. S1:(指S2問S3) What did he/she do there?S3:He/She went boating there.(教師引導(dǎo)學(xué)生區(qū)別一般過去時(shí)與現(xiàn)在完成時(shí)。)Step 4 Practice 第四步 練習(xí)(時(shí)間:8分鐘)完成1c和2，強(qiáng)化練習(xí)現(xiàn)在完成時(shí)及部分重要詞匯。1. (教師讓學(xué)生兩人一組，每人拿出提前準(zhǔn)備好的旅游照片或圖片，操練現(xiàn)在完成時(shí)。注意區(qū)別一般過去時(shí)、一般將來時(shí)和現(xiàn)在完成時(shí)，完成1c。)S1: Hi, S2. Wher

17、e have you been?S2: I have been to Shanghai.S1: What did you do there?S2: I enjoyed the beautiful scenery there.S3: Hi, S4. Where is Lucy?S4: She has gone to Mount Tai.S3: When will she come back?S4: She will come back in two days.2. (根據(jù)呈現(xiàn)的have/has been to和have/has gone to，完成2。然后核對(duì)答案。在處理2時(shí)，板書并講解，要求學(xué)

18、生掌握chairwoman和grandson。) chairwomangrandson3. (繽紛小賽場。出示幻燈片或小黑板。)(1)My teacher gave us the p answer after the discussion.(根據(jù)首字母填空)(2)My father often took me to my hometown to see my g , a kind-hearted old man.(根據(jù)首字母填空)(3)These (chairwoman) cant agree with each other.(適當(dāng)形式填空)(4)Wheres Lucy, Tom? She h

19、er hometown to see her grandparents.(單項(xiàng)選擇) A. return toB. has gone toC. has been toD. have gone toStep 5 Project 第五步 綜合探究活動(dòng)(時(shí)間:5分鐘)讓學(xué)生完成暑期調(diào)查表格，并寫出調(diào)查報(bào)告，進(jìn)一步熟練運(yùn)用現(xiàn)在完成時(shí)。1. (教師制作關(guān)于暑假活動(dòng)的表格，讓學(xué)生通過對(duì)話完成表格。)NameWhere has he/she been?What did he/she do?2. Homework: Write a survey report about the students summer

20、 holidays, using the simple past tense and the present perfect tense. The report includes: (1) Where have they been? (2) What did they do?板書設(shè)計(jì)：Our country has developed rapidly.Section Aby the wayWhere have you been, Jane?There goes the bell.I have been to proper Maria isnt at school. Wheres she?cha

21、irwomanShe has gone to Section BThe main activities are 1a and 2a. 本課重點(diǎn)活動(dòng)是1a和2a。. Teaching aims and demands 教學(xué)目標(biāo)1. Learn some new words and a phrase:shut, rope, granny, describe, in detail, education, develop, development2. Learn some useful sentences:(1)Though I had no time to travel, I still felt

22、very happy.(2)Is that so? (3)Luckily, with the development of China, many things have changed, and children can get a good education now.3. Go on learning the present perfect tense:(1)Have you ever fed them? No, I haven t.(2)Has Ann? Yes, she has./No, she hasnt.4. Learn about the differences between

23、 the Chinese teenagers lives in the past and those at present. . Teaching aids 教具圖片/錄音機(jī)/幻燈片. Five-finger Teaching Plan 五指教學(xué)方案Step 1 Review 第一步 復(fù)習(xí)(時(shí)間:10分鐘)創(chuàng)設(shè)情境對(duì)話，復(fù)習(xí)現(xiàn)在完成時(shí)態(tài)，并學(xué)習(xí)部分生詞。1. (通過做游戲，復(fù)習(xí)現(xiàn)在完成時(shí)。)T:Hi, boys and girls. Lets play the game “Quick Response”.T:Where have you been, S1?S1:I have been to H

24、ong Kong, and I bought many things.T:Where is S2?S3:He/She has gone to Mr. Lees office.T:When will he/she come back?S3:In an hour.2. (教師出示一張吉姆的旅游照片，介紹他的假期經(jīng)歷，導(dǎo)入并教授生詞。)T: Do you want to know where Jim has been during his summer holiday?Ss:Yes. T: Its a photo of him. Let me describe it in detail. (板書并要

25、求學(xué)生掌握。)describe, in detail S4:Has he been to Beijing? T:Yes, he has. He has been to Beijing with his parents, granny and little sister. (板書并要求學(xué)生掌握。)grannyT:His little sister went there for further education. Her dream is to study abroad. Luckily, with the development of our country, most of you will

26、 have a chance to study abroad. You are all lucky. But there are many disabled children. They are unlucky. We should try our best to help them. Look at this picture. Lets have a discussion. (板書并適當(dāng)講解生詞，要求學(xué)生掌握education, development, develop；理解disabled；了解luckily。)educationluckilydevelopdevelopmentdisab

27、ledStep 2 Presentation 第二步 呈現(xiàn)(時(shí)間:14分鐘)創(chuàng)設(shè)語言情境，讓學(xué)生掌握現(xiàn)在完成時(shí)態(tài)的一般疑問句，學(xué)習(xí)部分生詞，呈現(xiàn)1a、2a，完成2b。1. (教師拿出一張“殘疾兒童之家”的圖片，導(dǎo)入現(xiàn)在完成時(shí)的一般疑問句。)T:This picture is a disabled childrens home. Have you ever been there?(教師可用漢語解釋disabled childrens home的意思，幫助學(xué)生理解。)Ss:Yes, we have./No, we havent.(引導(dǎo)學(xué)生回答。)T:Maria has been to a disa

28、bled childrens home. Do you want to know what Maria has done there?Ss:Certainly.T:OK. Lets listen to the tape and answer the following question. What did she do to help them?(聽1a錄音回答上面問題，核對(duì)答案。)T:Did Maria have anytime to travel?Ss:No, she didnt. But she still felt happy.T:Yes. Though she has no time

29、 to travel, she has learned a lot from her holiday experiences.(教師解釋though引導(dǎo)讓步狀語從句，不與but連用。板書并要求學(xué)生掌握。)Though she has no time to travel, she 2. (播放1a錄音，學(xué)生跟讀，注意語音和語調(diào)。) T:Please listen to 1a again and repeat. Pay attention to the pronunciation and intonation.3. (聽2a錄音，回答幻燈片中出示的問題。)T: Today we all have

30、a happy life, but in the past, peoples lives were very hard, even some children had to be child laborers. Listen to the tape, and answer the following questions.(1) Did Kangkangs granny have a hard life in the past?(2) What did Kangkang tell Rita about Chinese teenagers in the past?(3) How did most

31、children spend their childhood in the past?(板書并講解生詞，要求學(xué)生理解。)laborer, teenager, childhood4. (學(xué)生打開課本，再聽2a，跟讀并找出疑難點(diǎn)。) T: Open your books now. Listen to 2a again and repeat. Mark the difficulties when you are reading.5. (引導(dǎo)學(xué)生說出疑難點(diǎn)和含有現(xiàn)在完成時(shí)態(tài)的句子，教師講解疑難點(diǎn)，板書要點(diǎn)并要求學(xué)生理解生詞support和rapidly。)have/live a hard lifeIs

32、 that so?cant/couldnt afford sth. Our country has developed rapidly.give support to sb./give sb. support6. (學(xué)生仔細(xì)閱讀2a，完成2b。兩分鐘后，核對(duì)答案。)Step 3 Consolidation 第三步 鞏固(時(shí)間:8分鐘)通過比賽、談?wù)摰刃问?，激發(fā)學(xué)生朗讀興趣，培養(yǎng)學(xué)生的聽、說技能，鞏固2a，完成2c。1. (分角色朗讀2a，選擇四組進(jìn)行比賽，激發(fā)學(xué)生朗讀興趣。對(duì)表現(xiàn)好的小組，給予掌聲鼓勵(lì)。)2. (學(xué)生兩人一組，談?wù)撨^去的孩子和現(xiàn)在孩子的不同生活。)T: Work in pair

33、s to talk about childrens different lives in the past and nowadays. Example:S1:In the past, many families were big and poor. S2:Yes. The parents couldnt afford their childrens education. S1:The children had no chance to go to school. S2:Some of the children had to be child laborers and never had eno

34、ugh food to eat.S1:I feel sorry for them. We are so happy nowadays. S2:Nowadays, our country has developed rapidly. Most children can get a good education. T: Just now, you compared Chinese teenagers lives in the past with those nowadays. You did very well!3. (聽錄音，完成2c。提高學(xué)生聽力技能，進(jìn)一步了解過去與現(xiàn)在的青少年的生活變化。)

35、T: Listen to the tape of 2c and fill in the blanks. (播放2c錄音兩遍，核對(duì)答案。)Step 4 Practice 第四步 練習(xí)(時(shí)間:8分鐘)強(qiáng)化練習(xí)現(xiàn)在完成時(shí)態(tài)的一般疑問句形式，以及動(dòng)詞的過去式與過去分詞。完成1b。1. (教師出示教學(xué)所需的圖片，要求學(xué)生運(yùn)用現(xiàn)在完成時(shí)，針對(duì)圖片內(nèi)容進(jìn)行問答練習(xí)。)(1)Have you cleaned rooms for the disabled children?Yes, I have.(2)Have you fed the disabled children?No, I havent.(3)Has

36、he jumped rope yet?Yes, he has.(板書并要求學(xué)生掌握。)rope2. (板書幾組動(dòng)詞，并講解動(dòng)詞的不規(guī)則變化。讓學(xué)生參考書后附表，完成1b過去式和過去分詞的填空部分。)(板書并要求學(xué)生掌握shut。)jumpjumped shut shut chatted chatted do did 3. (引導(dǎo)學(xué)生總結(jié)現(xiàn)在完成時(shí)的句型，用現(xiàn)在完成時(shí)的一般疑問句操練1b，要注意第三人稱單數(shù)的練習(xí)。完成1b。)Example:A: Chat online.B: Have you chatted online/Has he chatted online?C: Yes, I have

37、./No, he hasnt.Step 5 Project 第五步 綜合探究活動(dòng)(時(shí)間:5分鐘)通過寫調(diào)查報(bào)告的形式呈現(xiàn)今昔生活變化，對(duì)學(xué)生進(jìn)行熱愛生活的情感教育。1. (學(xué)生分組談?wù)撟约旱母改富驙敔斈棠掏陼r(shí)的生活，寫一份調(diào)查報(bào)告。) T: We know a lot about the differences between teenagers lives in the past and nowadays. What are your opinions? Do you care about your parents childhood? Do you care about your gra

38、ndparents childhood? If so, you can talk in groups of four to tell your partners how your parents or your grandparents spent their childhood. Make a simple survey report at last. (調(diào)查可以是關(guān)于娛樂、運(yùn)動(dòng)、學(xué)習(xí)、飲食、住房、穿著、健康、工作等方面的。)2. Homework: Write an article about teenagers nowadays. 板書設(shè)計(jì):Our country has develop

39、ed rapidly.Section Bhave/live a hard lifeHave you ever fed the disabled children?in detailYes, I have./No, I havent.Is that so?Has Ann ever ?cant/couldnt afford sth.Yes, she has./No, she hasnt.give support to sb./give sb. support Now our country has developed rapidly.Though she has no time to travel

40、, Section CThe main activity is 1a. 本課重點(diǎn)活動(dòng)是1a。. Teaching aims and demands 教學(xué)目標(biāo)1. Learn some new words and phrases:communication, quick, keep in touch with, far away, sort, rapid, progress, make progress, already, succeed2. Go on learning the present perfect tense: (1)My granny has lived in Beijing f

41、or more than forty years.(2)Beijing has made rapid progress and it has already succeeded in hosting the 2008 Olympic Games.3. Learn to express the great changes in China by comparing the living conditions in the past with those at present.4. Tell the students to cherish the life at present and study

42、 hard to make China stronger and stronger. Teaching aids 教具新舊北京城的圖片/幻燈片/錄音機(jī)/自己家鄉(xiāng)今昔變化的圖片 . Five-finger Teaching Plan 五指教學(xué)方案Step 1 Review 第一步 復(fù)習(xí)(時(shí)間:8分鐘)通過開展主題為“我和爺爺奶奶比童年”的討論活動(dòng)，引導(dǎo)學(xué)生更加珍惜新社會(huì)的幸福生活，從而導(dǎo)入本課話題。1. (檢查作業(yè)。讓學(xué)生在小組內(nèi)交流自己的報(bào)告，然后每個(gè)小組推薦出一名學(xué)生向全體同學(xué)匯報(bào)。師生互動(dòng)，談?wù)摖敔斈棠痰耐晟睢?Example:T:Who can tell us what your g

43、randparents life was like in the past?S1:Let me try. My granny had a hard life during her childhood. Her family was very big and poor. Her parents couldnt afford an education for her.S2:My grandpa used to be a child laborerS3:T: Very good. So you should cherish todays life and study hard.2. (談?wù)撔律鐣?huì)的幸

44、福生活，感受社會(huì)進(jìn)步。)T:What do you think of your life at present?Ss:We are living a happy life. S4: We have a healthy diet.S5: We can wear different kinds of clothes.S6: We can also get a good education. For example, we have chances to draw pictures, play the musical instruments and receive some other traini

45、ngs.T:Well done. As we know, great changes have taken place in China. Today lets talk about the changes in Beijing.Step 2 Presentation 第二步 呈現(xiàn)(時(shí)間:14分鐘)通過多媒體或圖片創(chuàng)設(shè)語言情境，教授生詞，培養(yǎng)學(xué)生快速閱讀的能力。1. (用多媒體或圖片呈現(xiàn)舊北京城和現(xiàn)代北京城的照片并做比較，從而引出生詞。)T:Lets look at the picture. It was old Beijing. What were Beijings roads like?

46、Look at todays Beijing. What are Beijings roads like now?S1:In the past Beijings roads were narrow. (教師引導(dǎo)并幫助學(xué)生用narrow回答。)(板書并要求學(xué)生理解。)narrowS2:But Beijings roads are wide now. T:Youre right. Do you know how to keep in touch with our friends far away nowadays?(板書，講解并要求學(xué)生掌握。)keep in touch with, far awa

47、yS3:We can keep in touch with our friends on the Internet. S4:We can use cellphones to keep in touch with our friends. T:Great. But do you know how people kept in touch with their friends and relatives in the past?S5:They used to write letters. T:Yes, good. At that time if we wanted to keep in touch

48、 with others, we could also send telegrams. But nowadays we can use many sorts of communication methods, such as telephones, cellphones, fax machines and the Internet.(板書，要求學(xué)生理解telegram, fax, relative；掌握sort和communication。)relative, telegram, sort, communication, faxT: In the past the communications

49、 were slow, but todays communications are very quick. So we can say, China has made rapid progress already. (板書并要求學(xué)生掌握。)quick, rapid, progress, make progress, already2. (仔細(xì)閱讀1a，回答幻燈片中呈現(xiàn)的問題，提高學(xué)生的閱讀理解能力。)(1) How about Beijings roads in the past?(2) Could most families get enough food in the past?(3) W

50、hy didnt the children have chances to go to school?(4) What about peoples life nowadays in Beijing? (教師核對(duì)答案, 并作必要的講解。)3. (學(xué)生跟讀課文錄音, 找出文中的疑難點(diǎn)，讓學(xué)生根據(jù)課文內(nèi)容猜測生詞和短語的含義。教師板書并講解。要求學(xué)生掌握succeed；理解reform and opening-up；了解leisure和 mainly。)succeed in doing sth.successbe successfulseeoneselfsothatin sth.in doing s

51、th.leisuremainlyin sth.in doing sth.not onlybut alsoreform and opening-upChina has developed rapidly since 1978.Step 3 Consolidation 第三步 鞏固(時(shí)間:10分鐘)讓學(xué)生再讀課文，找出中心句，完成1b。然后完成反映北京今昔變化的表格，并根據(jù)表格內(nèi)容復(fù)述課文，鞏固1a。1. (快速閱讀1a，完成1b，找出每段的中心句。)T: Open your books, read 1a quickly and write down the topic sentence of e

52、ach paragraph. (師生核對(duì)答案?；脽羝尸F(xiàn)各段中的主題句。)(1) Kangkangs granny has seen the changes in Beijing herself. (2) In the 1960s, the living conditions in the city were poor.(3) China has developed rapidly since the reform and opening-up. (讓學(xué)生了解：當(dāng)使用since表示時(shí)間時(shí)，主句中的動(dòng)詞通常用現(xiàn)在完成時(shí)或過去完成時(shí)。詳細(xì)講解詳見本單元第三話題。)(4) It is importa

53、nt to remember the past, live in the present and dream about the future.2. (讓學(xué)生再次閱讀1a。兩人一組填表格, 加深對(duì)北京今昔變化的了解。)(用投影儀出示表格。)In BeijingIn the pastNowadaysRoadHouseCommunicationLiving condition (幾分鐘后，核對(duì)答案。)3. (讓學(xué)生根據(jù)上述表格中所填信息復(fù)述課文。) T: You can begin like this:My granny has lived in Beijing for more than for

54、ty years, so she has seen the changes in Beijing herself. In the past, the roads were narrow Step 4 Practice 第四步 練習(xí)(時(shí)間:8分鐘)比較新舊北京城的圖片，并采取師生互動(dòng)、分組采訪的活動(dòng)形式，展現(xiàn)北京城的今昔巨變，培養(yǎng)學(xué)生熱愛生活，熱愛社會(huì)的良好情感。1. (再次呈現(xiàn)新舊北京城的圖片, 參照上一步的表格，師生互動(dòng), 完成1c。)T: What were Beijings roads like in the past?Ss: Beijings roads were narrow. T:

55、 What has happened to Beijings roads nowadays?Ss: Beijings roads have changed. They are wider than before. There are more ring roads. T: What will Beijings roads be like in the future?Ss: We think Beijings roads will be the widest in the world in the future. 2. (分組采訪：二人一組, 其中一個(gè)扮演記者，另一個(gè)扮演居住在北京多年的老人，對(duì)

56、北京的變化做一個(gè)采訪。提高學(xué)生的口語表達(dá)能力，培養(yǎng)熱愛生活熱愛社會(huì)的情感。R=Reporter，M=Man)R: Hello! How do you do?M: How do you do?R:May I ask you some questions?M: Of course. Go ahead.R:How long have you lived in Beijing?M: I have lived here for more than thirty years. R: Oh. Can you describe the changes about the roads, houses and living conditions of Beiji