牛津译林版（2019） 必修 第三册Unit 1 Nature in the balance 单元复习课件(共22张PPT)

(共22张PPT)
必修3
Unit 1 Nature in the balance
Revision
1.wildlife n.野生动植物，野生生物2.beneath prep.在……下面，在……下方；配不上3.impact n.影响，作用；撞击，冲撞vt. & vi.有影响；冲击4.damage vt. & n.损害，伤害；损坏，破坏5.process n.过程，进程；步骤，流程vt.加工，处理
6.official n.官员，要员adj.公务的；正式的，官方的
7.overseas adv.向(在)海外，向(在)国外adj.海外的，国外的
8.recycle vt.回收利用，再利用
9.species n.种，物种
10.oxygen n.氧气
11.resident n.居民，住户
12.carbon n.碳
13.continent n.大陆，陆地；洲
mittee n.委员会
15.policy n.政策，方针；原则
1.do(cause) harm to/be harmful to...对……有害2.in length 在长度上3.a variety of/varieties of 各种各样的4.have/make a great/deep impact on 对……有重大/深远影响5.as a consequence(result) of/in consequence of 由于6.maintain the balance of the ecosystem 维持生态系统的平衡7.an extinct species 一个已灭绝的物种8.protest against sth抗议某事9.make/earn a profit 盈利10.an economic crisis 经济危机
1.judge...from/by从……判断2.be home to是……的所在地/出产地/聚集地3.in turn依次地；转而4.break down使分解(为)，使变化(成)5.build up逐渐增加，扩大6.get rid of摆脱；丢弃；扔掉7.take measures采取措施8.give rise to使发生(或存在)9.breathe life into给……带来起色，注入活力10.alive with 充满，到处都是11.play a significant role 发挥重要作用12.maintain the fine balance 维持良好的平衡13.the towering ancient hardwoods 高耸的古老的阔叶树14.close to extinction 濒临灭绝
Fill in the blanks.
The Amazon rainforest, the largest rainforest in the world, crosses into eight countries, including Brazil and Peru, and one overseas region of France, all on the South American continent. It covers 1. _________ area of around 6 million square kilometers. It is named after the Amazon River,
2. _________ is close to 6,400 kilometers in length, 3.________ _(support) many different ecosystems, which give this area the richest biodiversity on the Earth, one tenth known species in the world living in it.
an
which
supporting
There are 4. _________ (variety) of plants in the Amazon rainforest. Of the 390, 000 plant species known to us, over 40, 000 can be found there. The forest's different levels support an 5. ____ _____(believe ) variety of wildlife. Each level of the forest forms its own little world, home to different kinds of living things. There are more than l, 300 species of birds and over 400 species of mammals living there. Among them 6. _________ (be) the jaguar, which can survive here.
varieties
unbelievable
is
The Amazon rainforest is not only home to numerous species of animals and plants but also known as the "lungs of the planet", because it breathes life 7. _________ the planet by fixing carbon and producing over 20 per cent of all the Earth's oxygen. But over the past 50 years, 17 per cent of the rainforest 8. ____ ______(disappear) due to human activities. And some species are also in danger of 9. _____ ___ (extinct). 10. ________ is time for us to do something to protect it.
into
has disappeared
extinction
It
Step 2 Finish the task according to the rules.1.据说新体育馆的面积是原来的3倍大。It is said that the size of the new gymnasium ______ _ _______ _ _ the old one.It is said that the new gymnasium _______ ________ the old one.It is said that the new gymnasium ______ __ the old one __ ___ ____.
倍数表达法：
is twice bigger
than/ is three times as big as
is three times the size of
is three times what
was/used to be
A＋be＋倍数＋形容词比较级＋than＋B；
A＋be＋倍数＋as＋形容词原级＋as＋B，
A＋be＋倍数＋theweight/height/length/width/size...＋of B
A＋be＋倍数＋(as…as)＋what引导的名词性从句
2.我有28本书，其中一半是由著名作家冰心写的。(介词+关系代词)I have 28 books, ________ __ ____ the famous writer Bing Xin.
half of which are written by
3.愿我是一条游在海里的鱼。(虚拟语气)I wish ______ __ swimming in the sea.
虚拟语气(Subjunctive mood)：
I were a fish
对现在的虚拟 从句谓语动词形式：过去式(连系动词be用were)
对将来的虚拟 从句谓语动词形式：would/could/might+动词原形
对过去的虚拟 从句谓语动词形式：had+过去分词
4.刚做完核酸检测，我就想吐。我多么希望我们能回到没有新冠病毒的日子。No sooner had I finished doing the nucleic acid testing than I felt like throwing up(呕吐). _______ _________ go back to the days without COVID-19.
补：我真希望在你昨天离开之前有机会和你谈谈我的作品。
I wish ______ __ about my work before you left yesterday.
How I wish we could
I had got a chance to talk with you
5. 凯特参加了昨天那个聚会，凯瑟琳也参加了。 Kate attended the party yesterday， Catherine.
so did
句式：
(肯定)so+助动词/情态动词/系动词be+主语
(否定)neither/nor+助动词/情态动词/系动词be+主语
6.如果你不支持那项计划，我也不支持。If you don’t support the plan, ___________.
so will I
主将从现
补：如果你不支持那项计划，我也不支持。If you don’t support the plan, ________________.
neither will I
M3U1
Nature in the balance
Environment
Economy
Which is the more important
Debate
The economy or the environment--
must we choose
Examples
Environment is more important because...
Without economy, people will...
In our country, ...
Compared to ..., developing economy is more necessary.
...
Open the floor for discussion.
Show time
Homework
1.Polish your writing.
2.Finish off the exercises.