高中英语人教版（2019）选择性必修第三册Unit 3 Environmental Protection Words and expressions 课件(44张ppt)

(共44张PPT)
选择性必修
第三册
Unit 3 Environmental protection
Words and Expressions
To learn some useful words and expressions
To learn the usage of the words and expressions
To learn more important expressions in the reading passage and try to master them.
话
题
词
汇
melt
starve
floods/flooding
Sea-level rise
droughts
greenhouse effect
重
点
词
汇
Listening to the tape and reading after the tape (Pages108-109).
Translate the words into English or Chinese.
1. emission [i m n]: n.____________________
2. ecology [i k l d i]: n.__________________
3. habitable [ h b t bl]: adj. _______________
4.sustain [s ste n]: vt.__________________
5. melt [melt]: vi. & vt.__________________
6. restrict [r str kt]: vt. _________________
7.release [r li s]: vt. & n. ______________
排放物；散发物；排放
生态；生态学
适合居住的
维持；遭受；承受住
(使)融化；熔化；软化
限制，限定；束缚
排放；释放；发布
Translate the words into English or Chinese.
8.__________________vi. & vt. (使)挨饿；饿死
9. _____________adj. 全部的；所有的；详尽的
10. _______________n. 趋势；趋向；动向
11.__________________ adv. 频繁地；经常
12. __________________adj. 和谐的
13. ______________vt. & vi. 提交；呈递；屈服14.______________adj. 适度的；中等的；温和的
starve [stɑ v]
comprehensive
trend [trend]
frequently
harmonious
submit [s b m t]
moderate
积
累
词
汇
To learn the usage of the words and expressions in unit3.
(1)melt vi.& vt. (使)融化；熔化；软化
melting adj. 融化的；熔化的
拓展：
melt down 将……熔化
melt into 溶解成；消散在……中
melt away 消失，消散；逐渐散去
Self-Learning
(2)starve vi.& vt. (使)挨饿；饿死
starvation n. 饥饿；饿死
拓展：
starve to death 饿死
starve sb out 用饥饿迫使某人屈服
starve for sth 渴望得到某物
(3)release vt.& n. 排放；释放；发布
拓展：
release from 从(某物)中释放
release of 解除，使放出
release to 向……发行
(4)trend n. 趋势；趋向；动向
trendy adj. 时髦的；赶时髦的
拓展：
trend of ……的形势
trend in ……的趋势
set a/the trend 开风气之先，带领新潮流
(5)broadcast vt.& vi. (broadcast, broadcast/broadcasted)播送；广播；传播 n. 广播节目；电视节目
拓展：
broadcast sth to sb/sth (向……)传播，乱传
broadcast on/upon 用……广播；播放……的新闻
live broadcast 现场直播
worldwide broadcast 向世界广播
(6)restrict vt. 限制；限定；束缚→restriction n. 限制规定；限制法规；约束
restrict oneself/sth to sth 把……限制/控制/保持在……
(7)seize vt. 抓住；夺取；控制
seize sth from sb 从……夺走
seize sb by sth 抓住某人某部位
seize up (身体某部分因紧张或上了年纪而)发僵，无法动弹
(8)reform vi.& vt. 改革； (使)改正；改造 n. 改革；变革；改良
reformer n. 改革者；改良者
拓展：
reform ... into ... 把……改造成……
reform sb through sth 通过……改造(某人)
reform of ……的改革
(9)moderate adj. 适度的；中等的；温和的 vi.& vt. 缓和；使适中
moderately adv. 适度；适量；适中
拓展：
moderate in 在……方面稳健的/有节制的
(10)submit vt.& vi. 提交；呈递；屈服
submission n. 屈服；归顺；提交；呈递
拓展：
submit sth to sb 向……呈交
submit to sb/sth/v. ing 服从某人/某事/做某事
(11)sensitive adj. 敏感的；善解人意的；灵敏的
sensitively adv. 敏感地；易受伤害地
拓展：
be sensitive to 对……敏感
be sensitive about 在乎，在意……
(12)restore vt. 恢复；使复原；修复
restoration n. 整修；修复；(规章制度等的)恢复
拓展：
restore to 恢复到……
restore sb/sth to sth 使某人/某物恢复原状
restore belief/faith in sth 恢复对……的信任
(13)disposal n. 去掉；清除；处理
dispose v. 去掉；清除；处理
拓展：
at sb's disposal 任某人处理；供某人任意使用；由某人自行支配
disposal of ……的处理；……的处置权
dispose of sb/sth 去掉；清除；处理
(14)fine vt. 对……处以罚款
拓展：
fine sb for sth/v. ing 因……而罚(款)
fine sb sth for sth/v. ing 因……而罚某人……
pay a fine 交罚款
(15)on behalf of 代表(代替)某人
2.Learn more important sentences in the reading passage and try to analyse them.
（1）There is little doubt that Earth is getting warmer and warmer.毫无疑问，地球正变得越来越温暖。
there is no/little doubt...这一句式常用于表达对某件事百分之百确定，其后常接that引起的从句。在肯定句中，doubt后面有时可跟whether引导的从句。
例如：
1.There is no/little doubt that he is telling a lie.毫无疑问，他在说谎。
2.There is some doubt whether we can complete the task before the deadline.我们是否能在截止日 期前完成任务值得怀疑。
（2）A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.海洋和大气变暖，以及冰层融化、海平面上升，都为 全球气候急剧变化提供了依据。
这句话的主语是 A warming ocean and atmosphere, 而 along with melting ice and rising sea levels 是伴随状语。
provide evidence of意为“证明；证实了；提供 的证据"，此处evidence为不可数名词。
例如：
Fossils provide evidence of how animals have evolved to survive in their environment.化石为动物 在环境中进化生存的过程提供了证据。
（3）An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died. 一位长期研究北极熊的专家说，从尸体的姿势 看，这头北极熊像是饿死的。
appear to have starved中starve这个动作发生在appear这个动作之前，所以要用完成式的形式 来表达。此句可以转化为 it appeared that the bear had starved and diedo
appear后可以接不定式的一般式、进行式或完成式，表示时间先后关系。
例如：
(1 ) 一般式:It appears to rain this afternoon.今天下午看起来要下雨。
(2 )进行式：He appears to be making fast progress in his research,看起来他在研究方面正取得 快速进展。
(3 )完成式：She appeared to have known the truth.她看起来好像已经知道真相了。
（4）Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth's climate warm and habitable.大气层中甲烷、二氧化碳等温室气体困住了部 分热量，从而使地球保持气候温暖、适宜居住。
trap意为“诱捕；使陷入困境；留住”。例如：
Hunters live by trapping animals.猎人们靠捕猎动物为生。
Sand and leaves trapped the water in the stream.沙石和树叶淤住了溪流。
keeping Earth's climate warm and habitable在这里是现在分词作结果状语，修饰trap这个动词。
（5）Water pollution levels increased, with more household and commercial waste ending up in the river.越来越多的生活和商业垃圾最终流入江中，加重了水污染程度。
with more household and commercial waste ending up in the river在句中充当状语，是 with 的复 合宾语结构。ending up in the river 的逻辑主语是 more household and commercial wasteo 类似的结 构在英语中很常见，
With time going by, I gradually learnt how to cope with stress in my life.随着时间的流逝，我逐 渐学会了如何应对生活中的压力。
with的复合宾语结构组成多为“with+宾语+形容词/副词/介词短语/现在分词（短语）/过去 分词（短语）/不定式（短语）”
例如：
The teacher came in, with a book in his hand.老师进来了，手里拿着一本书。
I sat in my room for a few minutes with my eyes fixed on the ceiling.我在房间坐了一会儿’眼睛 盯着天花板。
With so much work to do, I can't go out with you,有这么多工作要做，我不能和你出去。
Step6 practice
1.Write down the correct words individually using the knowledge of word formation.
(1)melt vi.& vt. (使)融化；熔化；软化→　　　　　 adj. 融化的；熔化的
(2)starve vi.& vt. (使)挨饿；饿死→　　　　　 n. 饥饿；饿死
(3)trend n. 趋势；趋向；动向→　　　　　 adj. 时髦的；赶时髦的
(4)restrict vt. 限制；限定；束缚→　　　　　 n. 限制规定；限制法规；约束
(5)reform vi.& vt. 改革； (使)改正；改造 n. 改革；变革；改良→　　　n. 改革者；改良者
(6)moderate adj. 适度的；温和的 vi.& vt. 缓和；使适中→　　　　　adv. 适度；适量；适中
(7)submit vt.& vi. 提交；呈递；屈服→　　　　　 n. 屈服；归顺；提交；呈递
(8)sensitive adj. 敏感的；善解人意的；灵敏的→　　　　　adv. 敏感地；易受伤害地
(9)restore vt. 恢复；使复原；修复→　　　　　n. 整修；修复；(规章制度等的)恢复
(10)disposal n. 去掉；清除；处理→　　　　　 v. 去掉；清除；处理
Step6 practice
1.Write down the correct words individually using the knowledge of word formation.
(1)melt vi.& vt. (使)融化；熔化；软化→　　　　　 adj. 融化的；熔化的
(2)starve vi.& vt. (使)挨饿；饿死→　　　　　 n. 饥饿；饿死
(3)trend n. 趋势；趋向；动向→　　　　　 adj. 时髦的；赶时髦的
(4)restrict vt. 限制；限定；束缚→　　　　　 n. 限制规定；限制法规；约束
(5)reform vi.& vt. 改革； (使)改正；改造 n. 改革；变革；改良→　　　n. 改革者；改良者
(6)moderate adj. 适度的；温和的 vi.& vt. 缓和；使适中→　 adv. 适度；适量；适中
(7)submit vt.& vi. 提交；呈递；屈服→　　　　　 n. 屈服；归顺；提交；呈递
(8)sensitive adj. 敏感的；善解人意的；灵敏的→　　　　　adv. 敏感地；易受伤害地
(9)restore vt. 恢复；使复原；修复→　　　　　n. 整修；修复；(规章制度等的)恢复
(10)disposal n. 去掉；清除；处理→　　　　　 v. 去掉；清除；处理
melting
starvation
trendy
restriction
reformer
moderately
submission
sensitively
restoration
dispose
2.Try to spell the new words
1.At that time people would s　　　　 if food was difficult to find.
2.Flora Landscape acts as an important role of society and 　　　　　(生态) in the urban landscape.
3.Before 　　　　　(释放),the sea lions are fitted with electronic tracking devices.
4.Plants absorb c　　　　 dioxide from the air and moisture from the soil.
5.The love and support of his family 　 (　　　维持) him during his hard times.
2.Try to spell the new words
6.Would you please keep silent The weather report is being b　　　　 and I want to listen.
7.The cramped living conditions severely 　　　　　__________(限制) the children’s freedom to play.
8.Jane was quick to s　　　　　 the meaning of what the teacher said at the meeting.
9.Our government is trying to 　　　　　(采取措施)to prevent and control pollution.
10.As far as I’m concerned,concentration on your studies will 　　　　　(导致,以…为结局)good grades.
Try to spell the new words
1.At that time people would 　　　　 if food was difficult to find.
2.Flora Landscape acts as an important role of society and 　　　　　(生态) in the urban landscape.
3.Before 　　　　　(释放),the sea lions are fitted with electronic tracking devices.
4.Plants absorb c　　　　 dioxide from the air and moisture from the soil.
5.The love and support of his family 　 (　　　维持) him during his hard times.
starve
ecology
release
carbon
sustained
Try to spell the new words
6.Would you please keep silent The weather report is being 　　　　 and I want to listen.
7.The cramped living conditions severely 　　　　　　　　　　 　　　　　______(限制) the children’s freedom to play.
8.Jane was quick to 　　　　　 the meaning of what the teacher said at the meeting.
9.Our government is trying to 　　　　　(采取措施)to prevent and control pollution.
10.As far as I’m concerned,concentration on your studies will 　　　　　(导致,以…为结局)good grades.
broadcast
restricted
seize
take measures
result in
Learn more important expressions in the reading passage and try to master them.
(1)Experts claimed that low sea ice levels caused by climate change meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food.(教材P26)
专家称，气候变化导致了海冰面变低，这意味着北极熊不能像以前那样捕猎海豹，所以它必须长途跋涉才能找到食物。
Enjoy some useful sentences.
(2)There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives.(教材P27)
有充分而全面的证据表明，温度的上升已导致世界范围内极端天气的产生和自然灾害的增加，这不仅会造成严重破坏，而且会危及人类生命。
(3)Continued greenhouse gas emissions will result in further warming and long lasting changes to the global climate．(教材P27)
持续的温室气体排放将导致进一步的气候变暖和持续的全球气候变化。
(4)This report looks at the problem of water pollution and some actions that have been taken to deal with it.(教材P32)
本报告着眼于水污染问题以及已经采取的一些措施。
(5)With these measures, it is believed that the beauty of the Li River will be preserved for generations to come.(教材P33)
有了这些措施，人们相信漓江的美丽将会被保存下来留给后代。
Homework
1. Finish workbook using words and expressions on Page 75.
2. Find out the language points in the text.