高中英语人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration课文ppt课件

阅读P32教材课文，选择最佳答案

1．Why does the writer mention the Deepwater Horizon?

A．To show it has more gallons of oil.

B．To explain its influence on animals.

C．To stress the bad effect of plastic.

D．To prove it has caused serious pollution.

2．What is the main idea of the third paragraph?

A．The speed of the melting ice in Arctic.

B．The discovery of fossil fuels in Arctic.

C．The damaging resources in the Arctic.

D．The influence of climate change on the Arctic.

3．What does the first writer think of the sea?

A．It belongs to humans.

B．It is the habitat of life.

C．It is less sensitive actually.

D．It is the possessions of future generations.

4．What makes it necessary for us to explore seas?

A．The development of technology.

B．The value of minerals under the sea.

C．The rising number of population.

D．The occurrence of earthquakes.

5．What's the main idea of the passage?

A．The risks about sea exploration.

B．The benefits about sea exploration.

C．The necessities and risks about sea exploration.

D．The balance between sea exploration and protection.

[答案]　1－5　DDBCC

Words and Phrases

　mercy n．仁慈；宽恕；恩惠

[教材原句P32]　Although this was banned in 1982，some countries are still “murdering” these intelligent creatures without mercy.

尽管在1982年这就被禁止了，但一些国家仍然毫不留情地“谋杀”这些聪明的生物。

[例1]　We never show mercy to bad people.

我们对坏人是决不留情的。

[例2]　It's a mercy that the accident happened so close to the hospital.

幸亏车祸发生在离医院很近的地方。

[即学即练]　单句语法填空/一句多译

①Having lost the engine's power，the boat was now at the mercy of the wind.

②He was such a cruel man that he showed no mercy to others.

③He will be generous and merciful (mercy) to those who are weaker than himself.

④They had mercy on Tom for he suffered a lot.

＝ They showed mercy to Tom for he suffered a lot.

他们对汤姆表示同情，因为他受的苦难太多了。

[小片段填空]

The merciful merchant showed mercy to the poor father，and said，“Don't scold him，he was a mere child.”(mercy)

　possession n．个人财产；拥有；控制

[教材原句P32]　The sea is home to life，not human beings' possessions.

海洋是生命的家园，而不是人类的财产。

[例1]　He carried all his worldly possessions in an old suitcase.

他将所有的个人财物放在了一只旧手提箱里。

[例2]　Anyone in full possession of the facts would see that we are right.

任何完全了解事实的人都会明白我们是正确的。

[即学即练]　单句语法填空/一句多译

①She said that she was suddenly possessed by/with fear.

②Wolf father，whose three children went to Peking University，is possessed (possess) of great confidence.

③The company that Tom is in possession of was once in the possession of his uncle.

④It is said that a young man possesses this building．(possess v．)

＝It is said that a young man is in possession of this building．(possession n．)

＝It is said that this building is in the possession of a young man．(possession n．)

据说一个年轻人拥有这座大楼。

[名师点津]

有无冠词意义不同的短语：

in possession of表示主动，意为“拥有……；占有……”，主语通常为表示人的词语；in the possession of表示被动，意为“被……占有”，主语通常为表示物的词语。类似的还有：

①in charge of负责……，in the charge of由……负责

②in control of控制……，in the control of被……控制

　log vt.把……载入正式记录；记录n.正式记录；日志；原木

[教材原句P32]　Logging new species will improve our understanding of life on the earth.

记录新物种将提升我们对地球生命的了解。

[例1]　The road was blocked by fallen logs.

倒下的原木堵住了路面。

[例2]　He logged the ship's speed at 10 knots in his logbook.

他在航海日志中记下船速每小时十海里。

[即学即练]　单句语法填空/完成句子

①I got an error message when I tried to log in/on．

②The password allows the user to log into/onto the system.

③When you are finished，remember to log off/out for security reasons.

④I have also decided to keep a log of what I do and when I do it.

我也决定将我所做的一切及做事的时间记录下来。

　arrest n．逮捕；拘留；中止vt.逮捕；拘留；阻止；吸引(注意力)

[教材原句P34]　A $5 million reward has been announced for information leading to the arrest of those responsible for the murder.

已宣布悬赏500万美元以获取缉拿谋杀犯的线索。

[例1]　He was walking in the street when a bird arrested his attention.

他正在街上走着，这时一只鸟吸引了他的注意力。

[例2] He is said to be under arrest for spreading online rumors.

据说他由于散播网络谣言被捕了。

[即学即练]　单句语法填空/完成句子

①The young man was arrested for having stolen his neighbor's computers.

②During the strike，a great many young people got arrested．

在罢工期间，很多年轻人被逮捕了。

③The police made several arrests during the football match.

警方在足球赛期间逮捕了一些人。

Sentence Patterns

　so that引导目的状语从句

[教材原句P32]　We need to understand what is happening to our planet so that we can take action.

我们需要了解我们的星球正在发生什么，这样我们才能采取行动。

句式分析：句中so that“为了，以便，目的是”，引导目的状语从句，相当于in order that(为了)。

[例1]　I set up the computer so that they could work from home.

我把电脑安装好，这样他们就可以在家办公了。

[例2]　 He encouraged his son to make friends with those around him so that he could adapt himself to the new surroundings easily.

他鼓励儿子跟周围的人交朋友，这样，他就能很容易适应新环境了。

[即学即练]　完成句子/一句多译

①We turned on the light so that we might see what it was.

我们把灯打开，以便看看它是什么。

②In order that we can get there on time，we should set out early.

为了及时赶到那里，我们应该早些出发。

③He raised his voice so that/in order that he could make himself heard．

＝He raised his voice so as to/in order to make himself heard．

＝He raised his voice to make himself heard．

他提高了嗓门，以便大家都能听到。

　动词­ing形式短语作主语

[教材原句P32]　 Understanding more about the sea will also help us manage its resources better.

更多地了解海洋也将帮助我们更好地管理它的资源。

句式分析：Understanding more about the sea是动词­ing形式短语作主语。动词­ing形式(短语)作主语往往表示经常性、习惯性的动作，谓语动词通常用单数形式。

[例]　Playing with fire is dangerous.

玩火是危险的。

[即学即练]　完成句子

①Reading English aloud in the morning will do you a lot of good.

早晨朗读英文会给你带来许多好处。

②It is no use telling him not to worry．

告诉他不要担心是没有用的。

③Their coming to help was a great encouragement to us.

他们来帮忙对我们是一个很大的鼓励。

主旨大意题

说明文、记叙文、议论文三种文体涉及的多种话题如社会文化类、人物故事类、科普说明类，都会考查文章大意类题。设问形式常有：

(1)What is the main theme/topic/idea of this/the passage/the text?

(2)What does the text/passage mainly focus on?

(3)The passage is mainly about        ．

(4)The general/main idea of the passage is        ．

(5)The passage mainly focuses on        ．

解题技巧—— “主题句定位”寻主旨

文章是由段落组成的。段落的主题就是段落的中心思想，具体段落的中心思想又是为文章整体中心思想服务的。理解整篇文章的中心思想的方法是建立在理解具体段落中心的基础上的。找出每小段的主题句，各段的主题句常在该段的首句或尾句，各段主题句的整体归纳便是文章的中心思想。有的文章无明显主题句，主题句隐含在段意之中，这就需要进一步加工概括。观察全文的结构安排，理解文章的“重心”和支撑性细节。

找主题句的四个小窍门

1．段落中出现表示转折的词语(如however，but，in fact，actually等)时，该句很可能是主题句。

2．首段出现疑问句时，对该问题的回答很可能就是文章的主旨。

3．作者有意识地重复的观点，通常是主旨；反复出现的词语，一般为体现文章主旨的关键词。

4．表示总结或结论的句子常包含therefore，thus，in short，conclude，conclusion等词。

[例文]

A month before my first marathon，one of my ankles was injured and this meant not running for two weeks，leaving me only two weeks to train.Yet，I was determined to go ahead.

I remember back to my 7th year in school.In my first P．E.class，the teacher required us to run laps and then hit a softball.I didn't do either well.He later informed me that I was “not athletic”．

The idea that I was “not athletic” stuck with me for years.When I started running in my 30s，I realized running was a battle against myself，not about competition or whether or not I was athletic.It was all about the battle against my own body and mind.A test of wills!

The night before my marathon，I dreamt that I couldn't even find the finish line.I woke up sweating and nervously，but ready to prove something to myself.

Shortly after crossing the start line，my shoe laces(鞋带) became untied.So I stopped to readjust.Not the start I wanted!

At mile 3，I passed a sign：“GO FOR IT，RUNNERS！”

By mile 17，I became out of breath and the once injured ankle hurt badly.Despite the pain，I stayed the course walking a bit and then running again.

By mile 21，I was starving!

As I approached mile 23，I could see my wife waving a sign.She is my biggest fan.She never minded the alarm clock sounding at 4 a．m.or questioned my expenses on running.

I was one of the final runners to finish.But I finished! And I got a medal.In fact，I got the same medal as the one that the guy who came in first place had.

Determined to be myself，move forward，free of shame and worldly labels(世俗标签)，I can now call myself a “marathon winner”．

★What does the story mainly tell us?

A．A man owes his success to his family support.

B．A winner is one with a great effort of will.

C．Failure is the mother of success.

D．One is never too old to learn.

B　[通读全文可知，作者在讲述自己跑马拉松的经历，根据第三段最后两句和最后一段“Determined to be myself，move forward，free of shame and worldly labels，I can now call myself a ‘marathon winner’．”可知，作者成功跑完马拉松源于自己的强大意志力。故选B。]

[即学即练]

Boys & Girls Clubs of King County is proud to announce Cassy，a member of Wallingford Boys & Girls Club，has won the title of our Youth of the Year.

In total，12 extraordinary teens from Clubs across the county competed for the title.Each candidate was judged on the following：leadership and service to their Club and community；their life goals and values；moral character；academic success and their public speaking skills during an interview.

Cassy walked away with the winning title and a $2，000 education scholarship.She said，“When there was no one else to reach out to，I knew I could turn to the staff at the Boys & Girls Club.Without the Club，I wouldn't have had the strength to continue my studies while I was homeless.I have come to think of the Boys & Girls Club as not only a place to go to after school，but a shelter and a home.”

“Cassy is incredibly hard­working and driven，” said Meghan Sweet，Director of Wallingford Boys & Girls Club.“She won't let her challenges get in the way of her success.The Club has provided her with a second home，while she in return has helped make the Club a warm and welcoming place we strive to provide for all our members.The world needs more young women like Cassy，who has proved that anyone who is given a place and an opportunity to develop their potential can become a community leader.”

Cassy values the voices of individuals who are homeless.She herself has experienced homelessness，and wants to share real stories of the homeless to promote people's understanding of them.She co­founded a student organization where she and other students interview homeless individuals and share their stories on a Facebook page called “The Unheard Voices of Seattle”．

★What is the passage mainly talking about?

A．The Unheard Voices of Seattle.

B．The winner of the Youth of the Year.

C．Boys & Girls Clubs of King County.

D．The moving stories of homeless kids.

B　[主旨大意题。本文围绕Cassy获得Boys & Girls Clubs of King County的“Youth of the Year”称号展开了叙述，然后讲述了该称号的评选条件、Cassy获奖后的感受、他人对Cassy的评价以及Cassy为让人们更加了解无家可归的人而作出的努力等。故选B。]