英语必修 第二册Unit 6 Earth first课前预习ppt课件

这是一份英语必修 第二册Unit 6 Earth first课前预习ppt课件，共23页。PPT课件主要包含了Skimming，false，half true，causes，effects等内容，欢迎下载使用。
D electric cars really help the envirnment ?
Leading-in
Here are sme questins abut “green living” in Activity 1 .Chse the answers yu agree with and why?
1. Which shpping bag is mre envirnmentally friendly ? A plastic bag . A paper bag. Neither f these.
2. What shuld yu d t save energy when leaving yur hme? Turn ff a device Unplug a device Neither f these.
3. What fd is better fr the envirnment? Fd prduced near t where yu live. Fd prduced far frm where yu live. It depends.
4. Which uses less water? Taking a bath. Taking a shwer. It depends.
Read the subheadings in the passage and decide if they are true r false.
When yu turn ff a device, it stps using pwer.
Paper shpping bags are better than plastic nes.
Eating lcal fd is gd fr the envirnment.
It’s better t take a shwer than a bath.
It depends.
Learning t learn
As subheadings expand n the main heading r title, they can be slightly lnger than the main heading. Althugh nt every paragraph needs a subheading, they can be skimmed t give the reader an verall understanding f the cntent f a text.
What's the main idea f the passage?
It discusses sme cmmn _________ which have been shwn t be nly________ r even cmpletely__________
green truths
1.Accrding t cmmn truth，when shpping，we shuld take______.A.a plastic bag B.a paper bagC.a reusable bag D.a cheap bag2.When yu turn ff a device，it ff electricity B.prtect the applianceC.save t much energy D.turn int stand-by mde3.Peple chse t eat lcal fd because they think____ ’s cnvenient B.it desn’t need transprtatinC.it uses mre energy D.it is gd fr envirnment
Scanning: reading cmprehensin
4.Whether taking a shwer r taking a bath is greener depends n temperatureB.the seasnC.the timeD.the amunt f water we use5. The passage mainly tells us ________ .A we shuld raise the awareness f envirnmental prtectinB we must take care f the envirnmentC nt all the “green truths” really greenD the cmmn ideas are false
Read the effects and cmplete the causes
Turning ff a device wn't stp it frm using pwer.
Devices ________ g int stand-by mde but still use pwer because electricity cntinues t ________ the device.
Eating lcal fd isn’t always better fr the envirnment.
Lcal prduce smetimes might use mre energy and prduce mre greenhuse __________________ a lng way away—even _____________ its transprt.
gases than prduce grwn
taking int accunt
It is nt always better t take a shwer than a bath.
If yu spend mre than eight minutes n shwer, yu will use ________water_____ in a bath---abut 50 litres f water.
Please give a talk abut ne f the “green truths” in the passage
Further thinking
“Green truths”
Why is it nt cmpletely true?
What shuld we d ?
Sme peple , it is nt cmpletely true , we shuld...
Hw “green” are yu? What can yu d t becme “greener”?
Think and share
refuse t buy ver-packaged prducts
dnate the clthes yu’ve utgrwn t thers
Green actins
Use less water.
Use yur wn bags instead f a plastic bag.
Be green with transprt
Unplug the device when yu are nt using it
Recycle yur trash.
Pick up trash : plgging.
Start gardening
Reuse bttles.
Respect but with n FEAR Emply but nt t DESTROY Appreciate but away frm GREED Lve is HARMONY
T get the verall understanding f a cntext frm subheadings.
“Green truths”
T think critically.