英语必修 第二册Unit 6 Earth first公开课课件ppt

这是一份英语必修 第二册Unit 6 Earth first公开课课件ppt，共24页。PPT课件主要包含了打扰打断，采取措施，no wind，chemicals，Student A，Student B等内容，欢迎下载使用。

Unit 6Earth first
T learn sme listening skills t get useful infrmatin.T knw hw t slve the envirnmental prblems.
Are there any envirnmental prblems in yur living areas?air pllutinnise pllutinwater pllutinsil pllutinglbal warming / climate changewaste dispsallss f bidiversity (生物多样性)defrestatin (森林砍伐)…
What d yu knw abut “smg”? Can yu say smething abut its causes, its dangerus effects? Hw t prevent it? When the smg cming, hw t prtect urselves? View a vide abut smg.
Smg cmes frm the wrds “smke” and “fg”, and it is used t describe the air pllutin in cities caused mainly by traffic and factries. Smg can be dangerus because it causes severe breathing prblems and infectins.
Did yu knw?
Envirnmental prblems t be slved
adj.(问题、伤势、传染病)很严重的
Listen t the lecture and chse the tpics that are cvered.
What the wrd “smg” means.When the wrd “smg” appeared.What caused smg in the past.What causes smg nw.The effects f smg n the envirnment.Hw gvernments try t reduce smg.What will happen if we dn’t reduce smg.
n. ( 尤指大学里的)讲座，讲课，演讲
听力原文Lecturer: Gd evening, everyne, and thank yu fr cming t tday’s talk. I’m Dr Brwn and I’m ging t talk abut air pllutin in cities- what we all knw as “smg”. Please feel free t stp me if yu have any questins. S, first f all, a bit f histry. The term “smg” was first used in the 1800s in cities that had prblems with smke and fg.
Student A: Srry fr interrupting, but I believe it was in the 1900s.Lecturer: Srry, I made a mistake. Yu are right. It was in the 1900s. Thank yu. Lndn was ne f the cities where smg caused big prblems. In December 1952, it suffered frm “The Great Smg”. It was a very cld winter, s a lt f cal was burned at hme and in the factries. The prblem was that there was n wind, s thick smg cvered the city. Nwadays…
Student B: Excuse me, but can I just ask- did the smg cause any deaths?Lecturer: I’m afraid s. Accrding t research, abut 4,000 peple are knwn t have died as a result f the smg, but that number culd be much higher. It was terrible! Nwadays, smg still exists, but is prduced by chemicals cming frm traffic and factries. Hwever, gvernments are taking measures t reduce smg as much as pssible. Nw, let’s lk at what smg des t ur health…
Student A: If I culd just stp yu again… Can yu give us examples f these measures?Lecturer: Well, fr example, factries must fllw rules abut what chemicals they use. In sme cities, when there’s smg, peple have t pay t drive in the centre. Nw, let’s mve n t the impact f smg n ur health…
Listen again and cmplete the slides.
Smg in the pastTerm created in: _______Big prblem in Lndn: ________________ in December 1952Causes f the prblem: burning t much cal and ___________
The Great Smg
Smg in the presentCauses f the prblem: ___________________________Measures: rules abut using __________ in factries and ______________________ _________ in the city centre.
chemicals cming frm traffic
requirements f paying tdrive
What ther measures can be taken bth by gvernment r by us individuals t prevent smg besides the nes talked in the listening text?
Hw t interrupt thers plitely? Can yu list sme examples? What’s the functin f using them?
Srry fr interrupting, but …Excuse me, but can I just ask …If I culd just stp yu …May I ask yu smething abut…If it is OK t yu, can I …Srry, but let me interrupt fr a minute, please.Srry t cut in, but…Can I say smething?May I please interject?I’m srry t barge in like this, but…I’m srry t cut yu ff, but…　　　　
Wrk in pairs and talk abut recycling.
Tell Student B abut recycling using the infrmatin n Page 84. Be prepared t be crrected by Student B.
Useful expressins
Please feel free t stp me if yu have any questins.Srry, I’ve made a mistake.Yu’re right,…I’m afraid…Well, …
Listen t Student A talking abut recycling. Interrupt plitely t crrect him/her using the infrmatin n Page 87.
Srry t interrupt, but…Excuse me, but can I just ask…?Culd I just stp yu again t check…?D yu mind if I ask anther questin?Srry, but I was wndering whether…Is it OK if I jump in fr a secnd?
A plite interruptin is usually framed as a request fr permissin t interrupt smene, ften starting with If…, May I…? Or Can I…? This may be preceded (先于) with an aplgy such as Srry, … r Excuse me, … Usually we interrupt smene when they pause fr breath, r during the slight pause between spken clauses.
Here is smething yu shuld pay attentin t when yu need t interrupt thers.
Learning t learn
Wrk in pairs. Talk abut anther envirnmental prblem and have a similar cnversatin.
Tips: 1. students can be divided int small grups and given a new envirnmental subject (fr example, hw t treat water pllutin r the present f a natural reserve) t make a dialgue. 2. Sme grups can make a presentatin t the whle class.
Water shrtage is a glbal prblem nwadays. It is an essential questin fr us t think abut hw t save water. Can yu give sme measures abut water-saving? List as many as yu can.