1、Unit 13 We're trying to save the earth!第一課時 第一課時 Section A(1a－2d)Target Navigation 【目標(biāo)導(dǎo)航】Key words and phrases：litter，bottom，fisherman，coal，ugly，advantage，cost，wooden，plastic，make a differenceKey sentences：(1)The ri

2、ver was dirty.Even the bottom of the river was full of rubbish.(2)It used to be so clean.(3)People are throwing litter into the river.(4)Everyone in this town should play a part in cleaning it up!(5)I used to be able to

3、see stars in the sky.Skills：能聽懂關(guān)于污染的問題和環(huán)境保護(hù)的話題；并初步學(xué)會用重點(diǎn)句型談?wù)撐廴竞铜h(huán)保的話題。Emotion：通過聽說訓(xùn)練學(xué)會談?wù)撐廴竞铜h(huán)保的話題，使學(xué)生認(rèn)識到污染的嚴(yán)重性，從而培養(yǎng)學(xué)生養(yǎng)成愛護(hù)環(huán)境，保護(hù)環(huán)境的習(xí)慣。The guidance of learning methods 【學(xué)法指導(dǎo)】聽說法；小組合作。Learning important and difficult points 【學(xué)習(xí)

4、重難點(diǎn)】1．能聽懂關(guān)于污染的問題和環(huán)境保護(hù)的話題；并初步學(xué)會用重點(diǎn)句型談?wù)撐廴竞铜h(huán)保的話題。2．掌握并運(yùn)用 Key sentences 中的重點(diǎn)句型。Teaching Steps 【教學(xué)過程】Autonomous Learning Scheme【自主學(xué)習(xí)方案】?預(yù)習(xí)指導(dǎo)與檢測(一)預(yù)習(xí)指導(dǎo)Jason：The air has become really polluted around here.I'm getting very w

5、orried.Susan：Yes，I used to be able to see stars in the sky.Jason：The problem is that…【探究六】小組合作完成 2d。1．學(xué)生自讀，找出疑惑。2．老師解疑并教讀對話。3．師生、生生分角色扮演對話?！局R點(diǎn)撥】1．The air has become really polluted around here.這兒的空氣已經(jīng)被污染了。辨析：turn，get 與

6、become(1)become 多指身份、職位等的變化，它強(qiáng)調(diào)變化的過程已經(jīng)完成，后面可接名詞或形容詞。如：He becomes a teacher.他成了一名老師。(2)get 多用于口語，表示一種變化過程，強(qiáng)調(diào)的是“漸漸變得”，后常接形容詞的比較級形式。如：In winter the days get shorter.冬季白天變得較短。(3)turn 指在顏色和性質(zhì)等方面與以前的完全不同，強(qiáng)調(diào)變化的結(jié)果。如：Leaves turne

7、d brown in the mountains.山里的樹葉已變成了棕色?！拘≡嚺５丁坑?turn，get 和 become 填空。①Her mother ________ angry when she heard the news.②It's ________ darker and darker outside.③The milk has ________ bad.(Keys：①became；②getting；③turned)

8、2．To cut down air pollution，we should take the bus or subway instead of driving.為了減少空氣污染，我們應(yīng)該乘坐公共汽車或者地鐵，而不是開車。cut down 意為“減少”，是“動詞＋副詞”結(jié)構(gòu)的短語，所帶的賓語為名詞時，賓語可位于 down 的前面或后面；為代詞時，只能位于 down 前面。如：You'd better cut the article