高中英语外研版 (2019)必修 第二册Unit 6 Earth first授课课件ppt

这是一份高中英语外研版 (2019)必修 第二册Unit 6 Earth first授课课件ppt，共23页。PPT课件主要包含了as　，larger　，of　，what　，the size等内容，欢迎下载使用。

1. D yu supprt “green living”? 2. Hw d we prtect envirnment in ur daily lives?
Watch the vide and discuss the questins.
Pre-reading
Lk at the questins abut “green living” and tick yur answers.
While-reading
Paper shpping bags are better than plastic nes. When yu turn ff a device, it stps using pwer. Eating lcal fd is gd fr the envirnment. It’s better t take a shwer than a bath.
Read the fur subheadings in the passage, decide whether they are true r false and explain yur reasns.
Cmplete the causes f these accrding t the passage.
Devices turned ff g int stand-by mde and still use pwer.
Lcal prduce might use mre energy and prduce mre green-huse gases.
If yu spend mre than eight minutes in a shwer, yu’ll use as much water as in a bath—abut 50 litres f water.
1. Which f the “green truths” surprises yu mst? Give yur reasns. 2. Are yu aware f any ther “green truths” that are nt true? Share them with the class.3. Hw “green” are yu? Share yur “green actins” with the class.4. What can yu d t becme “greener”?
Pst-reading
Think and discuss the questins.
Step 1 Use these questins t help plan yur talk. • Which “green truth” are yu ging t talk abut? • Why d peple believe it is “green”? • Why is it nt cmpletely true? • What can yu d t becme “greener”?
Wrk in grups. Give a talk abut ne f the “green truths” in the passage.
Step 2 Organise yur talk fllwing the steps belw. • Start by stating the tpic. • Describe yur chsen “green truth” in mre detail. • Explain why it is nt cmpletely “green”. • End yur talk by encuraging yur audience t becme “greener”. Step 3 Give yur talk t the class.
Read and answer the questins.
1. What is the purpse f the letter?2. What is the existing prblem?3. What are the prpsed actins frm Class 8?
1. What is the purpse f the letter?2. What is the existing prblem?3. What are the prpsed actins frm Class 8?
The purpse f this letter is t call n everyne t take part in the Clear Yur Plate campaign.
Over 30% f the wrld’s fd is wasted, while many peple in pr areas d nt have enugh t eat.
D nt rder mre than yu need in the schl canteen; rder less and take leftver fd hme when dining in restaurants; call n family members and friends t take part in the campaign.
Discuss anther envirnmental issue abut which t write a persuasive letter and make ntes.
Write a persuasive letter. Use the expressins in the bx t help yu.
Dear Friends,We are writing this letter t raise yur awareness f the need t prtect ur planet. Yu can help simply by participating in the N Bttled Water Campaign.Peple tend t think bttled water is cleaner and mre cnvenient. Hwever, they may nt knw that accrding t scientific research, millins f tns f plastic are used wrldwide t make water bttles each year. The plastic can take hundreds f years t break dwn.If yu are wrried abut the effects f bttled water n the Earth, we wuld like t suggest yu take the fllwing steps.1. Carry yur water in a sustainable, reusable bttle. In this way, yu dn’t need t buy bttled water.2. If yu have t purchase a plastic bttled beverage, recycle the bttle after use.3. Ask yur family members and friends t take part in this campaign.Everyne is respnsible fr making ur planet cleaner and better by ding what we can. Let’s start NOW.With best wishes,Class 11
A pssible versin
句型公式：倍数表达法【教材P91】　 Hwever, making a paper bag uses fur times as much energy as making a plastic bag and up t three times the amunt f water.然而，生产纸袋的耗能为塑料袋的四倍，耗水则多达三倍。【记牢】常用的倍数表达法有：(1)倍数＋as ...。(2)倍数＋形容词/副词的比较级＋than ...。(3)倍数＋the size/height/weight/length/width/depth/amunt...＋f ...。(4)倍数＋what从句。(5) ＋as many (或 much )＋名词＋as ...。
【佳句】　This car csts twice as much mney as that ne.这辆汽车的价格是那辆的两倍。【练透】　单句语法填空①This building is five times as high __ that ne.②The number f students in ur schl is three times ______(large) than theirs.③The new square is fur times the size __ the previus ne.④Peple's average incme is almst five times ____ they earned ten years ag.【写美】　一句多译⑤我们学校是他们学校的三倍大。→Our schl is three times ___________ their schl.→Our schl is three times ___________ their schl.→Our schl is three times _________f their schl.
as large as
larger than
1. It is the prductin f fd, nt its transprt, that uses mst f the energy and prduces mst f the greenhuse gas. 本句为强调句式，基本结构为It is/was+被强调部分+that/wh+其他。 e.g. It wasn’t until I finished film studies that I pursued my career as an actress. 直到完成电影学习，我才开始从事我的演艺生涯。
强调句的基本句型：陈述句：It is/was+被强调部分+that/wh+句子其他部分。一般疑问句：Is/Was it+被强调部分+that/wh+句子其他部分。特殊疑问句：疑问词+is/was+it+that+句子其他部分。nt ... until ...结构的强调句型：It is/was nt until ... that ...。e.g. It was because it was raining that we cancelled ur picnic. 正是因为下雨我们才取消了野餐。
2. But it’s wrth checking cmmn ideas and pinins t see what’s really green. be wrth ding意为“值得做；值得做某事”。 e.g. He always tells lies, s nthing he said was wrth listening t. 他总是说谎，所以他说的话没有一句值得听。
be wrth+钱数 值……钱 be wrth+ding值得…… wrthy adj. 值得的 be wrthy f +n.值得…… be wrthy t be dne/f being dne值得…… e.g. Is it wrth visiting the city which is famus fr its histry? 这个因历史而出名的城市值得去参观吗?
Assignment
Search mre infrmatin abut the “green truths” n the Internet, decide n ne and write a shrt paragraph abut it.
► Start yur writing by stating the tpic.► Describe the “green truth” in mre detail—why peple believe it’s “green”.► Explain why it is nt cmpletely true.► End yur talk by encuraging thers t becme “greener”.