外研版（2019）选择性必修 第二册Unit 5 A delicate world Developing ideas &Presenting ideas & Reflection课件(共36张PPT)

(共36张PPT)
Unit 5
A delicate world
Period Ⅲ
Developing ideas &Presenting ideas & Reflection
敲黑板
1.语言知识：comparison, endangered, on behalf of，“介词+关系代词”引导定语从句，that引导名词性从句等。
2.语言技能：了解演讲稿的文章结构，在分析文章的过程中学习作者在阐述原因时所体现的语言逻辑。
必刷词汇
1.prosper v.____________
兴旺，发达
2.thrive v.__________
茁壮成长
3.vertebrate n.__________
脊椎动物
4.beehive n.____________
蜂房，蜂箱
5.______ n.地位；身份
status
6._________ n.（pl._______ ） 标准，准则
criterion
criteria
7._____ adj.巨大的；广大的
vast
8.______ n.化石 拓展 ______ _____ 化石燃料
fossil
fossil
fuel
9.___________ n.比较 联想 _________ v.比较
comparison
compare
10.visual adj.________ 联想 ①_______ n.视力；视野②______ n.景色；观点 ③_______ adj.看得见的④
_________ adj.看不见的
视觉的
vision
view
visible
invisible
11.session n.__________ 易混 _______ n.部分
一段时间
section
12.herbal adj.____________________ 联想 _____ n.香草；药草
用香（药）草制成的
herb
13.___________ adj.神秘的 联想 ①________ n.神秘②______ n.神话
mysterious
mystery
myth
14._____ adj.稀有的,罕见的 派 ______ adv.很少；不常
rare
rarely
15.__________ adj.生物的，与生物有关的 联想 ①________ n.生物学 ②_________ n.生物学家
biological
biology
biologist
16.__________ adv.据说;看来,似乎 联想 _________ adj.显然的
apparently
apparent
17.________ n.海拔（高度） 易混 ________ n.态度
altitude
attitude
18.variation n.____________联想 ①_____ v.改变；使多样化②________ adj.各种各样的 ③_______ adj.
不相同的 ④_______ n.种类；多变性 a _______ of / _________ of 各种各样的
差异；变化
vary
various
varied
variety
variety
varieties
19.floral adj.______联想 _______ n.花
花的
flower
20.___________ adj.濒临灭绝的 联想 _________ vt.使遭危险；危及
endangered
endanger
21.__________ adv.在别处 联想 ①___________ adv.在某处②_________ adv.无处 ③
___________________ adv.到处
elsewhere
somewhere
nowhere
anywhere/everywhere
22._________ n.涌入;侵犯；入侵 联想 ①_______ v.大量涌入;侵犯②________ n.侵略者
invasion
invade
invader
23.coexist v.____________ 联想 ①______ v.存在②_________ n.存在 ③________ adj.现存的
共存，共处
exist
existence
existing
24._______ adj.稳固的;安全的 派 ________ n.安全工作
secure
security
25.________ n.问候,招呼 联想 ______ vt.问候
greeting
greet
26.on behalf of ______
代表
核心词汇
Data, examples and comparisons are then used to support the main ideas.然后使用数据、例子和对比来支持主要观点。
教材P74
1 comparison n.比较；对比
&1& make/draw a comparison做比较
in comparison with / to... 和……相比
by comparison (with...) （和……）相比（之下）
The researchers calculated how much water trees were getting in comparison with how much they needed.研究人员计算出树木实际吸收的水分，并与它们所需的水分进行对比。
By comparison with other European countries, car prices in the UK are very high.和其他欧洲国家相比，英国的汽车价格非常高。［《朗文当代》］
&2& compare v.比较；对比；把……比作
compared with / to... 和……相比（一般在句中作状语）
compare A with B 把A和B做比较
compare A to B 把A比作B
Profits have risen by 15 percent compared with the corresponding period last year. 与去年同期相比利润增长了15%。
Compare your homework with other students', and you'll find the mistakes you've made. 把你的作业和其他同学的比较一下，你就会发现你犯的错误。
Poets have compared death to sleep. 诗人把死亡比作睡眠。
But every once in a while, you find someone who's iridescent.And when you do, nothing will ever compare.但有天你会遇到一个彩虹般绚烂的人。当你遇到这个人时，其他一切都不重要了。
——《怦然心动》
定向练1
在空白处填入1个适当的单词或括号内单词的正确形式。
1.I'll just cite some figures for ___________ （compare）.
comparison
2.Don't compare your strengths _____ others' weaknesses, which is meaningless.
with
3.It is an interesting play, but it pales in ___________ （compare） with other plays.
comparison
4.__________ （compare） with our opponent, we have a slight advantage.
Compared
5.___________ （compare） your textbook with mine, I know mine is out of date.
Comparing
[解析] compare与其逻辑主语I之间是主动关系，故用现在分词。
2 endangered adj.濒临灭绝的
According to the World Wildlife Fund, the global black rhino population has dropped as low as 5500, giving the rhinos a “critically endangered” status.根据世界野生动物基金会（的数据），全球黑犀牛数量已减少至5500只，它们已处于“极度濒危”状态。［2021全国甲］
&3& ①endanger vt.使遭危险；危及
If unemployment continues to rise, social stability may be endangered如果失业率持续增长，社会稳定性可能会受到威胁。
②danger n.［U］危险；风险 ［C］危险因素；威胁 ［C,U］（坏事发生的）可能性，危险
Although endangered elsewhere in China due to the invasion of foreign species, the bees of Shennongjia have coexisted with the local people for centuries.虽然由于外来物种的涌入，神农架的这些蜜蜂品种在中国其他地方已经濒临灭绝，但它们却与当地居民共存了数百年。
教材P76
in danger 在危险中
be in danger of （doing） sth 有（做）某事的危险
be a danger to... 对……是个危险因素/威胁
be out of danger 脱离危险
I had a sudden feeling that Tom was in danger. 我突然感觉汤姆有危险。
I don't want to put you in danger. 我不想把你置于危险的境地。
Rose is in danger of losing her job. 罗丝有丢掉工作的危险。
The patient is now out of danger. 病人现在已经脱离危险。
③dangerous adj.危险的；有危害的；可能引起麻烦的
It's dangerous. .for a driver to drive fast at night. 司机在夜间高速行驶是危险的。
定向练2
一、在空白处填入1个适当的单词或括号内单词的正确形式。
1.Older people often try to economise on heating, thus ____________ （endanger） their health.
endangering
[解析] 句意为：老年人常常想方设法节约用暖气，结果损害了他们的健康。设空处作结果状语，应用现在分词。
2.What he did has led others to protect the habitat of this ___________ （endanger） species.
endangered
[解析] 句意为：他的所作所为促使其他人开始保护这种濒危物种的栖息地。
3.The busy street is ___ danger to children's safety.
a
4.Schoolchildren must be taught how to deal with __________ （danger） circumstances.
dangerous
二、翻译句子。
1.熊猫不再是濒危物种。
______________________________________
Panda is no longer an endangered species.
2.在战争中，每个人都有失去生命的危险。
______________________________________________
In war, everyone is in danger of losing their lives.
1
【句意】还是因为该园区是以传说中的中草药之父神农的名字命名的？
教材P74
&4& “介词+关系代词”引导定语从句
从语法角度来看，由于介词后面的成分是宾语，因此在其后使用的关系词也要有充当宾语的功能，先行词指人时关系词用whom，先行词指物时关系词用which。“介词+关系代词”结构用来引导从句时，不能单独成为一个完整的句子。
从介词使用的角度来看，“介词+关系代词”引导的定语从句在选用介词时需要符合下列三种情况的其中一种：
①与从句中的形容词或动词进行搭配。
This is the man to whom I referred. 我指的就是这个人。
The manager mentioned the task about which I felt confused. 经理提到了那项我没有弄明白的事务。
②与先行词能够搭配成合适的短语。
I'll never forget the time during which I spent my childhood in the country. 我永远不会忘记孩童时代我在乡村度过的时光。
③根据定语从句的意义来确定介词。
He is wearing thick glasses, without which he will walk like a blind man. 他戴着厚厚的眼镜，不戴的话他走起路来就像盲人一样。
特别注意不是所有的“介词+关系代词”结构都可以替换成where, when等关系副词。有时使用“介词+关系代词”要比单独使用关系副词在表意上更具体，这时不可替换，例如：
He came to the square on which a huge monument stood. 他来到了广场，那里矗立着一座纪念碑。（on which可以换成where，表意相近）
He climbed up the top of the mountain, beyond which came a beautiful rainbow. 他爬上了山顶，远处出现了一道彩虹。（beyond which不能换成where，因为where本身不能体现beyond的含义）
定向练1
一、在空白处填入1个适当的单词。
1.The survivors were rescued by firemen, with _______ they went through the barriers in the burning
building.
whom
2.This is a competition ______ which we can benefit a lot.
from
二、根据汉语意思完成句子。
1.格林家有5个孩子，其中最大的已经19岁了。
There are five children in the Greens, _________ _______ the oldest is 19 years old.
among / of
whom
2.这是令我骄傲的家乡。
This is my hometown _________ I am proud.
of which
I still think we have the capability to change the manner in which we're wasting resources, in which we're poisoning our oceans, and we can look to a future with healthy oceans.我仍然认为我们有能力去改变我们浪费资源、毒害海洋的行为，这样我们就能期待一个有着健康海洋的未来。
——《蓝色星球2》
2
【句意】这种蜂蜜的特别之处在于它是由中国最早期的蜜蜂品种酿制的。
教材P76
&5& that引导名词性从句
that引导名词性从句时不表示任何含义，只起连接作用，不充当从句中的任何成分。
That failure is the mother of success is what some people disagree with.失败是成功之母，有些人不同意这种说法。（That引导主语从句，在从句中既无含义又不作成分；what引导表语从句，充当从句中with的宾语，意为“……的事物”）
特别注意that在名词性从句中的使用要注意以下两点：①主语从句、表语从句和同位语从句中不得省略；②宾语从句中，引导第一个宾语从句的that可省略，与之平行的第二个及第二个以后的that不可省。例如：
The exciting thing is that the teacher has just told us the news that our team has finally won the competition.令人激动的是，方才老师告知我们一个消息：我们队终于赢得了比赛。（此句中前后两个that分别引导表语从句和同位语从句，故不能省略）
Our headmaster declared （that） there would be more extracurricular activities established in our school next semester, and that students would feel free to choose their preferences.我们校长宣称，我校下学期将会开设更多课外活动，学生将可以自由选择自己喜欢的活动。（此句含有两个并列的宾语从句，引导第一个从句的that可以省略，第二个that不可省）
定向练2
一、在空白处填入1个适当的单词。
1._____ he has appeared in the latest film is on everyone's lips.
That
2.He believed that nothing would prevent him from moving on, and _____ each failed attempt is worth
learning from.
that
二、根据汉语意思完成句子。
1.李明被北京大学录取了，这个消息是真实的。
_____ ______ _____ Li Ming has been admitted by Peking University is true.
The
news
that
2.人类的智慧能创造奇迹已经为历史所证明。
_____ _______ __________________________can work wonders has been proved by history.
That
human
intelligence / wisdom / ingenuity
写作仿 写演讲稿（介绍或推荐某物）
文体分析
1.文体介绍
演讲稿是演讲者进行演讲的依据，是对演讲内容和形式的规范和提示，以整体性、针对性、可讲性、口语性、临场性和互动性为特点。教材在“Drafting a lecture”部分展示了如何通过演讲来介绍风景名胜，此演讲稿的结构同推荐信或介绍信较为类似。
2.篇章结构
Para.1 Opening:
（1）简单问候；
（2）说明演讲背景（比如：某事物目前受到广泛关注或欢迎等）；
（3）阐明演讲目的（介绍/推荐某物）。
Para.2 Reasons （for introduction / recommendation）:
（1）阐述介绍/推荐的理由（某物本身具有的特性）；
（2）阐述该特性会为听众带来的好处或影响。
（注意：每写完一个介绍/推荐的理由，就要在其后面对应地阐述其为听众带来的好处或影响。）
Para.3 Conclusion:
（1）总结上文介绍/推荐的理由；
（2）表达作者对听众的期待。
素材储备
1.开头语的常用表达
Good morning / afternoon / evening，everyone.I'm honoured to be here to... 大家早上 / 下午 / 晚上好，我很荣幸在这里……
It's my great honour / I feel it a great honour to share my speech on the topic of... 很荣幸能够分享我关于……话题的演讲。
I really appreciate this opportunity to give a speech on... 我十分感谢这次能够就……进行演讲的机会。
2.引出话题的常用表达
Noticing /Aware of the universal acceptance of... , I would recommend... 留意到人们对……的广泛认可，我将推荐……
The recent popularity of... has encouraged me to introduce/recommend... as... 最近掀起的……的热潮促使我向大家介绍 / 推荐……作为……
In view of people's ongoing enthusiasm / preference for... , I would like to share my speech on the topic of... , which has drawn the focus of the public. 鉴于人们对……持续的热情 / 喜爱，我很愿意分享主题为……的演讲，该话题已经引起了公众的关注。
It's noticeable / noteworthy that people have realised / acknowledged... 值得注意的是，人们已经意识到 / 承认……
3.阐述内容或理由的常用表达
Sth features... , which will bring people... 某物以……为特征，将为人们带来……
Sth is characteristic of its... , making it a（n）... to do sth. 某物以……为特征，使其在做某事方面成为……
It is also noteworthy that... , which... （不用于第一个原因）同样值得注意的是……，这样……
Of equal / similar importance / significance， ... , where people can... （不用于第一个原因）同样重要的是，……,其中人们可以……
Another noteworthy characteristic belongs to... , whose advantages will range from... to... （不用于第一个原因）另一个值得注意的特点是……，其好处包括……和……
4.语言过渡的常用表达
To begin with / First of all, I'd like to talk about... 首先，我想谈论……
Besides / What's more, ... 此外，……
Last but not least, ... 最后但同样重要的（一点）是……
Most of all / Above all, ... 最重要的是……
5.表示呼吁、展望或总结的常用表达
What I want to stress is that... 我想强调的是……
In short/In conclusion / All in all / To sum up, ... 总之,……
Let's make joint efforts to ensure... 让我们共同努力，以确保……
Only in this way can we... 只有这样，我们才能够……
6.用作结束语的常用表达
Many thanks for your listening. 感谢您的聆听。
Thank you all for being so attentive. 谢谢大家的认真倾听。
句子仿写
1.很荣幸能够分享我关于该话题的观点。
①__________________________________________________（it作形式主语）
It's my great honour to share my opinions on the topic.
②_____________________________________________________（it作形式宾语）
I feel it a great honour to share my opinions on the topic.
2.该情况已经引起公众关注。
____________________________________________
The situation has drawn the focus of the public.
3.值得注意的是，环境污染越来越严重了。（noticeable）（it作形式主语）
_____________________________________________________________________
It is noticeable that environmental pollution becomes more and more serious.
4.用非限制性定语从句合并句2和句3。
____________________________________________________________________________________________
______________
It is noticeable that environmental pollution becomes more and more serious, which has drawn the focus of the public.
模拟演练
读书使人明智，你班英语课上即将开展主题为“我为大家推荐一本好书”的演讲活动。请你准备一篇英语演讲稿，内容包括：
1.介绍你向同学推荐的书;
2.阐述你推荐该书的理由。
注意:1.词数100左右；
2.首句和结束语已为你写好，不计入总词数。
Good morning，everyone!
___________________________________________________________________________________________
That's all.Thanks for your listening!
【思路引导】
【参考范文】
Good morning, everyone！
Today I want to recommend a book titled Reunion.The book was written by a young girl Sun Yue and dictated by her father Sun Haiyang.It mainly tells Sun Haiyang's life experience before and after the loss of his son Sun Zhuo.The writing is delicate and smooth.While reading the book, you can feel the hardships Sun Haiyang has gone through.The purpose of the book is not to make readers cry but to bring power to those who have similar experiences as Sun Haiyang.
It is such a moving story that it is worth reading again and again.
That's all.Thanks for your listening!
请总结你学到的有用表达：
【高级词汇】
_________________________________________________________________________________________
【高级句式】
_________________________________________________________________________________________