北师大版（2019）必修第三册 Unit 8 Green livingTopic talk语言点课件(共16张PPT)

(共16张PPT)
UNIT 8 GREEN LIVING
TOPIC TALK
1. extinction n. 灭绝
(1)Some languages are now close to extinction.
(2)An operation is beginning to try to save a species of crocodile from extinction.
(1)be close to extinction 濒临灭绝
(2)save...from extinction 挽救……以防止其灭绝
(3)词语积累 extinct adj. 已灭绝的，绝种的
go/become extinct 绝种
an extinct species 已灭绝的物种
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◆单句语法填空
（1） The pace of the language’s ____________ (extinct) is becoming faster than ever before.
（2） They are trying to save the ancient language _________ extinction.
extinction
from 　
2.solution n. 解决，解决办法
(1)They offered us a practical solution to this problem.
(2)In my opinion，the problem is not easy to solve.
(3)Believing in yourself is the key to success.
(1)a/the solution to... ……的解决办法
(2)solve vt. 解决；解答 solve a problem 解决问题
(3)the key to... ……的钥匙/ 关键
the answer to... ……的答案
the entrance to... ……的入口
the approach to... ……的办法
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（1） The school adviser won’t give you any direct __________（solve）to your problems.
（2） There are still many problems 　 　　　 　 （ solve）before we are ready for a long
stay on the Moon.
（3） I have tried very hard to find a solution 　　　　 　 the problem，but in vain.
solution
to be solved 　
to 　
3.recycle v. 再利用，回收利用
The cardboard bed parts will be recycled into paper products after the Olympic Games.
奥运会结束后，纸板床零件将被回收制成纸制品。
(1)recycle paper/glass/waste回收纸 / 玻璃 / 废弃物
(2)recycling n. 回收利用
(3)recyclable adj. 可回收利用的
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(1)The garbage is then taken away and，if possible _________ (recycle).
(2)The cups also have plastic to prevent leaking， which makes them hard 　　　　 　（recycle）.
◆完成句子
（3）Paper bags 　　　　　　　 　　　（很容易被回收利用） but require more energy to produce and transport.
recycled 　
to recycle
are easily recycled 　
4.balance n. 平衡；天平，秤/v（使）保持平衡；均衡；权衡
(1)I struggled to keep my balance on my new skates.
(2)On balance，the company has had a successful year.
(3)She balanced the cup on her knee.
(1)keep one’s balance 保持平衡
lose one’s balance 失去平衡
(2)on balance 总的说来
(3)balance （sth） on sth（使……）在……上保持平衡
(4)balanced adj. 平衡的，均衡的　　　　
a balanced diet 均衡饮食
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(1)An A-team may require 　　　 　 balance—not just A players，but a few generous B players as well.
(2)It is difficult for a working woman to keep 　　　 　 balance between her family and her work.
(3) 　　　　 　 balance，their performance was a great success.
(4) A 　 　　　 　（balance） diet and regular exercise are both important to keep fit.
a 　
a 　
On 　
balanced
5.not to leave the tap running不要让水龙头开着
(1)Helen always leaves the light burning all night long.
(2)I’m sorry. I have left some of your questions unanswered.
(3) We must leave the children to solve their affairs themselves.
leave + 宾语 + 宾补 　使……处于某种状态
（1）leave+ 宾语+ 现在分词（表示主动或正在进行）
（2）leave+ 宾语+ 过去分词（表示被动或已经完成）
（3）leave+ 宾语+ 不定式
（4）leave+ 宾语+ 形容词/ 副词/ 名词/ 介词短语
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(1)His words left me 　 　　　 　（wonder） how to deal with the difficult problem.
(2)His letter left me 　　　　 　（feel） very disappointed.
(3)Her parents left her 　　 　　 　（choose） her own friends from an early age.
(4)那位伟大的作家去世了，他的书还没有写完。
The great writer died， 　　　 　　　　　　　　　.
(5)他们都走开了，让我一个人站在那里。
They all walked off and _________________________________________.
wondering
feeling 　
to choose 　
leaving his book unfinished 　
left me standing there all by myself
6.not to leave the house with lights still on 不要亮着灯离开房子
(1)Mr Brown was walking along the river with his dog following him.
(2)With the task finished，we left the company earlier than usual.
(3)With so much work to do，I can’t go on holiday.
with复合结构--with+ 宾语 + 宾补
(1)with + 宾语 + 现在分词（表示主动或正在进行）
(2)with + 宾语 + 过去分词（表示被动或已经完成）
(3)with+ 宾语 + 动词不定式（表示尚未发生）
(4)with + 宾语 + 形容词/ 副词/ 介词短语
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(1)With the experienced guide 　　　　 　（lead） the way，we had no difficulty getting through the forest.
(2)I think that I’ll do well in the exam with Mrs Chen 　　　　 　（teach）me.
(3)With a lot of problems 　　　 　（settle）， I can’t go skating with you.
(4)With all the work 　　　　（finish），they hurried back home for lunch.
(5)The manager came in with his assistant 　　　　 　（follow） him.
(6)The living room is clean and tidy，with a dining table already ________ (lay) for a meal to be cooked.
leading 　
teaching 　
to settle
finished
following 　
laid 　
教材原句p.29 We are using resources as if we had two planets， not one.
我们在使用资源，就好像我们有两个地球，而不是一个。
【句式分析】本句中的 as if 引导的是方式状语从句，从句使用了虚 拟语气，表示与现在事实相反的情况。
as if 引导方式状语从句
as if 引导的方式状语从句常用虚拟语气，表示所述的情况与事实相反。
Mrs Lee treats the orphan as if he were her own son.
Martin behaved as if he had won a big prize.
Paul opened his mouth as if he would say something.
◆单句语法填空
(1)Don’t handle the vase as if it 　　　　 　（be） made of steel.
(2)Eliza remembers everything exactly as if it 　　　　 　（happen） yesterday.
(3)Your uncle talks about Rome as if he 　 　　 　 （ be） there before.
(4)The black clouds are gathering. It looks as if it 　　 　（be） going to rain.
(5)The meat over there tastes as if it 　　 　　 　 （ go） bad，so you’d better throw it away.
(6)Lucy looked at her watch from time to time as if she 　　　　 　（be） waiting for someone.
were
happened
had been 　
is 　
has gone 　
was 　
Thanks