(共36张PPT)
Unit 3 Environmental Protection
climate changes
There is little doubt that...
along with
provide evidence
a dramatic change
Para. 1
1.气候变化
2. 毫无疑问...
3. 和;连同
4. 提供证据
5. 一个巨大的变化
1. There is little doubt that Earth is getting warmer and warmer.
There is little/no doubt that... 几乎没有疑问的是……
There is some doubt whether ... 是否…是有疑问的
that引导同位语从句,解释说明doubt的具体内容
注意:doubt前有否定意义的词修饰时,由that引导(否定句);
doubt前有肯定意义的词修饰时,whether或if引导(肯定句)。
1. There is little doubt that smoking is extremely harmful to our health.
2. There is no doubt that he is a reliable person.
3. There is some doubt whether he will come to help us.
4. I doubt if /whether it was what he wanted.
练习
1.If you have any doubts ______your health, you’d better consult your doctor .
2.There is no doubt______enough concern must be paid to the problem of air pollution.
3.You can complain, but I doubt __________it will make any difference.
about
that
whether/if
along with … 意为“连同;以及;和…一起 ”。连接前后两个主语时,谓语动词应和前面的那个主语保持一致。
例:1. She came to dinner along with her friends.
2. Jim, along with his classmates, has seen the film.
。
练习
The woman, along with two children, (come) here every day.
comes
就前一致的词有哪些?
with; together with; along with; as well as;
besides; apart from; except...
be shocked by
appear to do =seem to do
the alarming case
have an impact/effect/influence on…
1. 被...震惊
2. 似乎
3. 令人惊恐的案例
4.对...产生影响
Para. 2
e.g. Thousands of people will starve if food doesn't reach there.
The schools are starving for funds.
starve to death 饿死
starve for 缺乏/急需……
【语境应用】翻译句子。
1) 那次饥荒 (famine) 中有许多人饿死了。
2) 给我准备些吃的!我快饿死了!
Many people starved to death because of the famine.
Please prepare some food for me. I’m starving!
Para.3
global average surface temperature
a key climate process
greenhouse effect
man-made
refer to (referred-referring )
as short-wave radiation
release...into...
keep earth’s climate warm and habitable
sustain life
huge amounts of
be trapped in
1. 全球平均表面温度
2. 一个关键气候过程
3. 温室效应
4. 人造的
5. 指的是
6. 以短波辐射的形式
7. 释放到
8. 地球温度保持温暖并适于居住
9. 维持生命
10. 大量的
11. 被困在
提及;谈到
参考;查阅
谈到;提到
refer to
1. His report refers to the situation in the Middle East.
2. The writer often refers to a dictionary.
3. The book referred to is not in the library.
The "natural" greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation.
4. Climate scientists often mention a key climate process called the “greenhouse effect”, which has two common meanings: the “natural” greenhouse effect and the “man-made” greenhouse effect.
过去分词作后置定语,修饰名词process
which引导的非限制性定语从句,修饰the “greenhouse effect”
句意:气候学家经常提到一个被称为“温室效应”的关键气候过程,它有两个常见的含义:“自然”温室效应和“人为”温室效应。
5. The heat is released back into space at longer wave lengths.
release vt. : to let a substance flow out 排放;释放
release sth. into sth.
eg Oil was released into the sea.
Coal power stations release sulphur dioxide (二氧化硫) into the atmosphere.
release vt. : to let news or official information be known and printed 发布
eg The latest news has just been released to the media.
release n. 排放;释放;发布
eg The accident caused the release of radioactivity(放射性物质) into the atmosphere.
There are strict rules on the release of official information.
【语境应用】完成句子。
The prisoner has served his sentence and _______________ (release) tomorrow.
When she was alone, she burst into tears, ______________ (release) all her emotions.
will be released
releasing
6. Without this process, Earth could not sustain life.
sustain v. to make something continue to exist or happen for a period of time 保持,维持,使持续
eg She found it difficult to sustain the children's interest.
sustain v. to suffer damage, an injury, or loss of money 遭受,经受
eg Two of the fire-fighters sustained serious injuries.
【拓展】
sustainable adj. 可持续的,合理利用的
sustainable economic growth 经济的可持续增长
【语境应用】完成句子
1) The ice was too thin to _________________ (承受体重) of the goat.
2) The typhoon left, and the city had __________________ (遭受巨大破坏).
3) The aim of the meeting was to promote ______________________ (可持续发展) in that area.
sustain the weight
sustained great damage
sustainable development
7. When people produce huge amounts of extra greenhouse gases by burning fossil fuels…
huge amounts of + 不可数名词 大量,许多
修饰名词作主语时,谓语动词用复数形式
a huge amount of +不可数名词 大量,许多
修饰名词作主语时,谓语动词用单数形式
eg A huge amount of money has been spent on this project.
eg Huge amounts of damage have been done in a short time.
(1) 一般只用来修饰可数名词复数形式的有:
a great / good many, a great / large / good number of, quite a few等。
(2) 一般只用来修饰不可数名词的有:
quite a little, a great deal of, a large amount of, large amounts of 等。
【归纳】
表示“许多,大量”的短语:
(3) 既可修饰可数名词复数形式,又可修饰不可数名词的有:
plenty of, a lot of, lots of, a mass of, masses of等,这时谓语动词的单复数形式取决于它们后面所接的名词的形式。
(4) a large quantity of和large quantities of后既可接可数名词复数形式,又可接不可数名词,这时谓语动词的单复数形式要由quantity的单复数形式来决定。
【语境应用】从括号内选择适当的词填空。
1) It’s reported that a good amount of money _____ (was / were) spent to prevent and control desertification (荒漠化).
2) A large number of houses ______ (was / were) destroyed in the earthquake.
3) I think that large amounts of time _____ (is / are) wasted in watching TV series.
4) A large quantity of flowers _____ (has / have) been planted in our school.
was
were
are
has
be trapped in …意是“被困在; 陷入困境; 陷入” 。
Linda must be trapped in this storm. If so, she must be in danger.
be caught in 表示“陷入,卷入”;
be stuck in 表示“受困于,被困在…中, 陷入,卡住不动”。
1. We were caught in the storm and got wet all over.
2. We don’t want to be stuck in the market all the day.
拓展链接:
strong and comprehensive evidence
extreme weather
natural disasters
cause damage
5.cost human lives
6. take appropriate action
7. the warming trend
8. frequently broadcast
9. extreme rainstorms and heatwaves
10. economic losses
Para.4
1. 确凿且全面的证据
2. 极端天气
3. 自然灾害
4. 造成损害
5. 造成生命损失
6. 采取适当的行动
7. 变暖的趋势
8. 频繁地报道
9. 极端暴雨和热浪
10. 经济损失
8. 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.
主句
剩余的部分是that引导的同位语从句,解释evidence的具体内容。
not only…, but also…是两个并列的现在分词短语作结果状语
9. In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.
现在分词短语作后置定语,修饰rainstorms and heatwaves
broadcast v. to send out radio or television programmes 广播; 播送
eg The interview was broadcast live across China.
broadcast v. to tell sth. to a lot of people使广为传播,散布
eg Don’t broadcast the fact that he lost his job.
broadcast n. a programme on the radio or on television
广播节目; 电视节目
a news broadcast 一档新闻节目
a live broadcast of the concert 音乐会的现场直播
【点拨】
a live broadcast (n.)
broadcast (v.) live
现场直播
Para. 5
result in=lead to=contribute to=result from v.
as a result of =because of=due to=
2. consider making policies
3.restrict the amount of carbon dioxide
4. It is our responsibility to do
5. seize the opportunity to do(seize sb. by the+n.)
1. 导致,由...造成
由于
2. 考虑制定政策
3. 限制二氧化碳的量
4. 做...是我们的责任
5. 抓住机会做某事
10. Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate.
result in: to make something happen 导致,造成
eg The accident resulted in the death of two passengers.
Our efforts resulted in success.
【拓展】
result from... 由……造成; 因……而产生
as a result of... 由于……的结果
as a result 结果 (在句中常用作插入语, 相当于一个副词)
eg His failure resulted from not working hard enough.
He is unable to go to school as a result of the fall from his horse.
He saved the life of the boss’ daughter. As a result, he was given an excellent job.
【语境应用】翻译下面句子。
1) 他的粗心导致了他的失败。
2) 他犯了一个大错误,因此失去了工作。
3) 疾病通常是由缺乏睡眠引起的。
His carelessness resulted in his failure.
He made one big mistake, and as a result he lost his job. / He lost his job as a result of one big mistake.
Sickness often results from lack of sleep.
11. We as individuals can also reduce our “carbon footprint” by restricting the amount of carbon dioxide our lifestyles produce.
restrict vt. to limit or control the size, amount, or range of something 限制;限定
eg In future we will restrict class sizes to 20 students.
I'm restricting myself to a piece of candy a day.
省略了that/which的定语从句,修饰先行词carbon dioxide
restrict名词形式是restriction
搭配:
restrictions on
restrict oneself to (doing) sth
拓展
restriction n. a rule or law that limits or controls what people can do 限制规定;限制法规;约束
eg The park is open to the public without restriction.
It is a club with strict restrictions on its membership.
1. The earliest studies have suggested a link between calorie __________ (restrict) and slowing aging.
2. We make no restrictions ______ the kinds of films we show — as long as a film’s quality meets our standards.
3. Don’t restrict yourself to _________ (make) friends — it will help increase your knowledge.
即学即用
restriction
on
making
12. It is our responsibility to seize every opportunity to educate everyone about global warming,…
seize vt. to take hold of something suddenly and violently 抓住
seize a chance / an opportunity :
to quickly and eagerly do something when you have the chance to 抓住机会/时机
eg Seize the chance, otherwise you’ll regret it.
I seized his arm and made him turn to look at me.
seize vt. to take control of a place suddenly and quickly, using military force 夺取
eg The soldiers seized the city after a hard fight.
seize vt. (of a strong feeling, desire, etc) affect (sb) suddenly and overwhelmingly (指强烈的感情、愿望等)突然影响或控制(某人)
eg I was seized with a sudden desire to laugh out loud.
When she saw his face, she was seized by fear.
【语境应用】根据汉语翻译补全句子。
The young man _________________ and made some money.
这个年轻人抓住机会赚了一些钱。
2) They _________________ in a surprise attack.
他们突袭攻占了机场。
3) I was suddenly _________________________ great insecurity and loneliness.
我突然感到很没有安全感,很孤独。
seized by/with a feeling of
seized the chance
seized the airport
I am really sorry to have given you so much trouble.
He was believed to have been a reporter.
I expect to have read the book by the weekend.
I meant to have called you last night.
Compare and Find
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,这只北极熊像是饿死的。
动词不定式完成时