Unit2SavingtheEarthTopic1PollutionhascausedtoomanyproblemsSectionA

1、Unit 2Saving the EarthTopic 1 Pollution has caused too many problems.Section AI . Material analysis本課是第二單元第一話題的第一課時(shí)。主活動(dòng)是 1a。1a通過對(duì)比“West Hill今巖的環(huán)境變化，引出本話題的污染問題，鞏固現(xiàn)在完 成時(shí)與一般過去時(shí)的用法及區(qū)別。1b要求學(xué)生能夠聽懂一般過去時(shí)態(tài)和現(xiàn)在完成時(shí)態(tài)，也就是要分清1b所提及的詞語所伴隨的時(shí)間。1c則是在閱讀之后再找出 西山”所發(fā)生的變化。2通過觀察圖片內(nèi)容，結(jié)對(duì)編對(duì)話，描述污染前后的情況，進(jìn)一步訓(xùn)練學(xué)生口頭表達(dá)能 力和對(duì)一般過去時(shí)和現(xiàn)在完成

2、時(shí)的運(yùn)用能力。3通過聽并記錄 動(dòng)物的生存現(xiàn)狀”，了解環(huán)境污染帶給動(dòng)物的危害，繼續(xù)提高學(xué)生的聽力水平。任務(wù)4的口語表達(dá)，培養(yǎng)學(xué)生的說的技能，檢測(cè)對(duì)本課的掌握情況。通過本課的學(xué)習(xí)，培養(yǎng)學(xué)生關(guān)注環(huán)境問題的意識(shí)。n .Teaching aims 1.Knowledge aims：掌握本課的重點(diǎn)詞匯和短語，鞏固一般過去時(shí)和現(xiàn)在完成時(shí)的用法和區(qū)別能夠用一般過去時(shí)和現(xiàn)在完成時(shí)描述過去和現(xiàn)在的變化正確使用there be sth./sb. doing st球表達(dá) 宥某人/物正在做某事”2.Skill aims:能聽懂描述環(huán)境變化的對(duì)話，區(qū)別一般過去時(shí)和現(xiàn)在完成時(shí)的用法。能理解和運(yùn)用一般過去時(shí)和現(xiàn)在完成時(shí)來進(jìn)行

3、聽、說、讀、寫活動(dòng)。3 .Emotional aims: (optional)讓學(xué)生了解環(huán)境污染的嚴(yán)重性，并樹立環(huán)保意識(shí)。4 . Culture awareness: (optional)通過課文的學(xué)習(xí)，讓學(xué)生了解環(huán)境的變化，關(guān)注全球的環(huán)境問題。m . The key points and difficult points1. Key points:Words and phrases: bee, butterfly, mess, shame, several, pollute, waste, villager, destroy, cut down, goodness, pour, see sb

4、./sth. do sth., see sb./sth. doing sth., cut down, my goodnessSentences: What a shame! / What a mess!The flowers and grass have gone!What has happened here?There be sth./sb. doing sth.There are several factories pouring waste water into the stream.Everything has changed.Grammar: differences between

5、Simple Past and Present Perfect tense.2. Difficult points :正確使用there be sth./sb. doing st味表達(dá) 有某人/物正在做某事”。區(qū)另恢用短語 see sb./ sth. do st祿口 see sb. / sth. doing sth.能正確地以口頭和書面形式區(qū)別使用一般過去時(shí)和現(xiàn)在完成時(shí)。IV . Learning strategies通過引導(dǎo)學(xué)生在聽前閱讀1b和3,培養(yǎng)學(xué)生形成聽前熟悉、預(yù)測(cè)聽力材料的習(xí)慣通過朗讀1a和2,引導(dǎo)學(xué)生模仿已有對(duì)話，編寫新的對(duì)話。通過1c,培養(yǎng)學(xué)生整合對(duì)話信息，將對(duì)話轉(zhuǎn)換為語篇的能

6、力。V . Teaching aids圖片（關(guān)于校園周邊環(huán)境變化對(duì)比圖或者影像資料），錄音機(jī)，幻燈片等。VI. Teaching proceduresStage(time period)Interaction patternsTeacher activityStudent activityRemarks1Getting students ready for learning (1 min)Class activityGreet and talk about the weather. Lead theSs to discuss the right place for a picnic.T: Hi

7、, boys and girls! It 8 a nice day, isn ' it?Greet and focus their attention on the teacher.t.通過談?wù)撎鞖?，要去野炊?吸引學(xué)生的注意力，也符 合課文主題，使學(xué)生專注于課堂。如果天氣/、好，Ss: Yes.T: Would you like to have a picnic with me?Ss: I ' d like that./Sounds great.T: So where shall we go?Ss.Ss: Yes.Ss: I ' d like that./Sounds

8、 greaSs.也可以做好周末的野炊計(jì)戈上2Lead-in(3-5 mins)Group workLet the Ss discuss where to have a picnic. Encourage them to state the reasons.T: Now work in groups, choose the best place for a picnic and tell the class why you choose that place.SsT: OK, tell us where to have a picnic. Why?S1: I think is the best

9、choice. The air there is fresh. We can fly kites on the grass.S2Discuss where to have a picnic and state the reasons. SsS1: I think is the best choice.The air there is fresh. We can fly kites on the grass.S2先讓學(xué)生討論出合適的野 炊地點(diǎn)，老帥再出小西山 沒被污染的圖片來吸引學(xué) 生的注意。當(dāng)學(xué)生興趣高 漲時(shí)，又呈現(xiàn)被污染后的 圖片，讓學(xué)生滿懷興趣和 疑問去了解西山被污染前 后的狀況，更好的體

10、會(huì)一 般過去時(shí)和現(xiàn)在完成時(shí)在 語境中的運(yùn)用，同時(shí)也突 破了單詞關(guān)。3Pre-listeningClass activityPresent two pictures of the West Hill andWatch the pictures of the West(5-7 mins)describe the changes. Teach the new words and some difficult sentences.(Show the old picture of the West Hill to the Ss)T: Look at this beautiful picture. Kan

11、gkang and his friends had a picnic there two years ago. Can you guess where it is?Ss: Yes, is the West Hill.T: What can you see in the picture?S1: Some flowers, a clean river and a big tree T: Right. The West Hill is a beautiful place. Can you see the bees and butterflies dancing there(Point to the

12、bees and butterflies, and then write down the words and phrases on the Bt T: So do you want to go there for a picnic?Hill, guess the meaning and pronunciation of the words according to the introduction about the changes of the West Hill.Ss: Yes, its thg West Hill. S1: Some flowers, a clean river and

13、 a big tree )在教授新單詞時(shí)，老師應(yīng) 當(dāng)同時(shí)呈現(xiàn)單詞和音標(biāo)， 讓學(xué)生運(yùn)用所學(xué)音標(biāo)自己 解決單詞的讀音問題，如 果學(xué)生發(fā)音不準(zhǔn)，老師要 及時(shí)更正。再根據(jù)圖片和 講解，引導(dǎo)學(xué)生大膽的猜 測(cè)詞義和部分難句的意 思，為1a中的聽力對(duì)話掃 障礙。Ss: Yes T: I ' d like to. But now it has changed a lc Look at this picture. Do you like it?Ss: No.(Teacher presents the new words and difficult sentencesthrough the descrip

14、tion of the picture.)Ss: Yes t.Ss: No.4While-listening(10 mins)Individual workStep 1: Let the Ss listen to 1a twice and do 1b alone.T: Listen to the tape carefully and try to mark the words with P or N. T: Now please check answers in your group51: “ Beautiful " is in the past.52: “Butterflies “

15、 are in the past.53: “ Dirty ” is now. Listen and mark the words with P or N according to the tape. .S1: “Beautiful ” is in the pa S2: “Butterflies ” are in the S3: “Dirty " now. 本課對(duì)話不長(zhǎng)，詞匯量不 大，可以直接在組內(nèi)核對(duì) 答案。如果對(duì)話較長(zhǎng)，難 度較大，建議先聽兩遍后 再讀，通過讀來檢查聽的 結(jié)果。st.past.Group workStep 2: Let the Ss listen to 1a aga

16、in and pay attention to the pronunciation and the intonation. Then practice 1a in groups and role play it.T: Read 1a with your group members and act it out.Listen to 1a again and pay attention to the pronunciation and the intonation. Then practice 1a in groups and role play it.分角色朗讀是培養(yǎng)語感， 增強(qiáng)自信，提高興趣的

17、基 本方法之一。讓學(xué)生通過 讀的方式感知一般過去時(shí) 和現(xiàn)在完成時(shí)的差別后， 在2中馬上運(yùn)用，編寫新 的對(duì)話，可以讓學(xué)生完整 的體會(huì)兩種時(shí)態(tài)的區(qū)別， 也突破了本課的語法關(guān)。5Post-listening(20 mins)Group workStep 1: Let the Ss read 1a aloud and fill the blanks in 1c in groups.T: Read 1a aloud and fill in the blanks in 1c as quickly as possible, and then discuss the answer with your grou

18、p members. T: Now check the answer together.S1: a beautiful placeRead and fill the blanks in 1c as quickly as possible.S1: a beautiful place做完聽力練習(xí)后，再讓學(xué) 生通過讀的方式在具體情 況中感知兩種時(shí)態(tài)的差 別，并通過相應(yīng)的任務(wù)去 掌握它們的用法。Pair workS2: lost of flowers and grassS3:Step2: Let the Ss observe the pictures and study the example in

19、2 and try to make new dialogs according to the pictures and the given words. Then act out the dialogs.T: Now study the example in 2 and try to make new dialogs with their partners according to the pictures and the given words. Then act out the dialogs. T: OK, who can try?51: There were many trees wh

20、en I visited the hill last year.52: But now the trees have gone.51: What has happened here?52: The farmers have cut them down.S2: lost of flowers and grassS3Observe the pictures and study the example in 2 and try to make new dialogs with their partners according to the pictures and the given words.

21、Then act out the dialogs.51: There were many trees when I visited the hill last year.52: But now the trees have gone S1: What has happened here?53: The farmers have cut them該環(huán)節(jié)是讓學(xué)生通過聽的 方式，繼續(xù)學(xué)習(xí)一般過去 時(shí)和現(xiàn)在完成時(shí)的區(qū)別， 并引導(dǎo)學(xué)生關(guān)注動(dòng)物的生 存問題和環(huán)境污染的嚴(yán)峻 形勢(shì)。教師要注意在情感 態(tài)度教學(xué)方面的引導(dǎo)。Individual workStep 3: Lead the Ss to look at

22、 the pictures and listen to the sentencesonce to number them. Then listen to them twice to complete the sentences.T: Look at these pictures in 3, listen and number them. .T: OK, now check the answers together. The right order isT: Well done. Now listen again and fill in the blanks in 3. When listeni

23、ng, you can only write the first two letters of each word or the first word of each phrase. After finishing listening, you have some time to complete your answers. Ready? down.Look at the pictures and listen to the sentences once to number them. Then listen to them twice and complete the sentences.T

24、: OK. Now you have one minute to complete the sentence. Pay attention to the form of verbs. T: OK, time is up. Lets check the answes.51: People have cut down too many trees.52: - many trees .53: -but now they S451: People have cut down too many trees.52: - many trees .53: - but now they S46Summarizi

25、ngand assigning homework(3 mins)Group workStep 1 :Sum up the main content of this class and the key pointsT: Lets g o through what we have learned tod Group 1 and 2, please sum up the new wore Group 3 and 4, please sum up the key phras and the difficult sentencesGroup 5 and 6, please sum up the grammar in this class.Speak out the key words, phra