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英语选择性必修 第一册Unit 5 Revealing nature优质课件ppt
展开Unit 5 Revealing nature
内容索引
INDEX
语篇理解 精读精练 萃取文本精华
基础自测 自主学习 落实基础知识
互动探究 探究重点 互动撞击思维
Period Three Using language & Developing ideas
达标检测 当堂检测 基础达标演练
语 篇 理 解
PART 1
精读精练 萃取文本精华
Ⅰ.Read the passage and judge whether the following statements are true(T) or false(F).1.It’s said that Alexander the Great and Marco Polo had visited a talking tree.( )2.Plants can use chemicals to communicate with each other.( )3.People can hear the sounds plants are making.( )
T
T
F
Ⅱ.Read the passage carefully and choose the best answer.1.What is the main idea of the first two paragraphs?A.Marco Polo spent most of his time studying plants.B.There are some legends about talking trees.C.In the movie Avatar,trees can save people.D.New research has revealed that plants appear to communicate.
√
2.The ways plants communicate with each other are mentioned EXCEPT .A.using chemicalsB.using soundsC.using insectsD.using an amazing system
√
3.Which of the following statements is NOT true?A.When a plant gets attacked,it can release some chemicals.B.The plants can’t hear the noises from other plants.C.Some plants can spread poisons to attack other ones.D.Some big pine trees can send food to smaller ones.
√
返 回
基 础 自 测
PART 2
自主学习 落实基础知识
1. n.特征,特性2. v.减少3. v.责怪,指责;把……归咎于4. adj.原始的,低等的5. adv.遍及全世界6. adj.巨大的,特大的7. v.发现,察觉(尤指不易觉察到的事物) → n.发现①
Ⅰ.重点单词
characteristic
decline
blame
primitive
worldwide
giant
detect
detection
8. n.根9. v.把……联系起来;连接10. n.厘米
root
link
centimetre
①detect [v.发现,察觉(尤指不易觉察到的事物)]→detection (n.发现) 例:invent→invention
掌握规律 巧记单词
1. 做关于……的研究2. 最后,终于3. 是……的家园4. 相比之下5. 达到……6. 源于……的,原产于……7. 执行8. 毕竟,终究
Ⅱ.核心短语
do research on...
in the end
be home to...
by contrast
up to
be native to
carry out
after all
9. 与……交流10. 赶走……11. 在某些方面
communicate with
drive...away
in some ways
1.be+adj.+to do用主动形式表示被动意义Gregor Mendel chose to study pea plants because their characteristics ______ .格雷戈尔·孟德尔选择研究豌豆,是因为它们的特性容易控制。2.sb. is said to have done...Alexander the Great and Marco Polo such a tree in India.据说亚历山大大帝和马可波罗在印度参观过这样的树。
Ⅲ.经典句式
were
easy to control
were said to have visited
3.so that引导目的状语从句Scientists hope to learn more about this plant warning system,___________ without pesticides.科学家们希望更多地了解植物的警告系统,以便我们能利用它来种庄稼而不用杀虫剂。4.现在分词作方式状语 ,plants can share information and even food with each other.使用森林网,植物可以分享信息,甚至可以彼此分享食物。
so that we
Using the wood wide web
返 回
can use it to grow crops
互 动 探 究
PART 3
探究重点 互动撞击思维
decline v.减少;衰退;谢绝 n.减少;下降;衰退
1
※decline by...下降了……decline to do sth. 拒绝做某事※in decline在下降on the decline在下降a sharp decline in...在……方面的急剧下降
重点词汇
(1)In parts of southern California the decline was nearly 75 percent.(2019·浙江)在加州南部的部分地区这种下降接近75%。(2)I offered to give them a lift,but they declined with thanks.我邀请他们搭便车,但他们婉言谢绝了。(3)The number of tourists to the resort declined 10% last year.去年,到这个景点旅游的人数减少了10%。(4)In spite of many invitations,he would always decline (visit) Oxford.尽管多次受到邀请,他还是拒绝去牛津。
by
to visit
The extinction of the Pinta Island tortoise is blamed on humans.平塔岛龟的灭绝被归咎于人类。
2
blame v.责怪,指责;把……归咎于※blame sb. for...因……而怪罪/责备某人;把……归咎于某人blame sth. on...把责任归咎于……be to blame for该为……受责备;应为……承担责任※put/lay the blame for sth. on sb. 把某事归咎于某人take/bear the blame for...对……负责;为……承担责任
(1)She blamed her husband for the failure of their marriage.她把婚姻的失败归咎于她的丈夫。(2)It is my fault,so I am (blame) for Miller’s accident.这是我的错,我应当为米勒的事故负责任。 (3)Lots of people find it hard to get up in the morning,and put the blame ____the alarm clock.(2017·全国Ⅲ)很多人发现早晨起床很难,并且把此问题归咎于闹钟。
to blame
on
be native to源于……的,原产于……
3
be home to...是……的家园/产地/栖息地
(1)It is said that the tiger is native to India.据说,这种虎产于印度。(2)The island a variety of plants.这个岛是很多植物的家园。
is home to
When another bean plant detects the chemicals from its injured neighbour,it starts to release its own,different chemicals.当另一株豆属植物发现受伤邻居释放的化学物质时,它开始释放自己的不同的化学物质。
4
detect v.发现,察觉※detection n.探测,侦查※detective n.侦探※detector n.探测器
(1)Many forms of cancer can be cured if detected early.如果发现得早,许多癌症都可以治愈。(2)Last year the (detect) rate for car theft was just 13%.去年汽车盗窃案的侦破率仅为13%。(3)If you want to enter that house,you must hold a smoke (detect).如果你想进入那个房子,你必须拿着一个烟雾探测器。[高级表达](4)A firefighter was walking ahead of me and he was detecting the ground.(用非谓语动词改写)A firefighter was walking ahead of me, .
detection
detector
detecting the ground
Some of these chemicals drive insects away.有些化学物质把昆虫赶跑。
5
drive...away赶跑;驱车离开drive off驾车离开drive sb. crazy使某人发疯
(1)After two and a half years,the mother drove the young panda away.两年半后,熊猫妈妈把小熊猫赶跑了。(2)I watched several people go by,get into their cars and drive .我看见几个人走过,上车然后开车离开了。(3)The children nearby by making fun of her.附近的孩子们取笑她,这简直让她发疯。
off
drove her crazy
This fungal network links the roots of different plants to each other.这种真菌网络把不同植物的根部相互联系起来。
6
link v.把……联系起来;连接 n.联系;连接线※a link between...and...……和……之间的联系※link...to/with...把……和……连接/联系起来
(1)Most food webs,for instance,consist of many weak links rather than a few strong ones.(2019·天津)例如,大多数食物网由很多弱的联系而不是强的联系组成。(2)Is there a link smoking lung disease?吸烟和肺病之间有联系吗?(3)A subway line will link the airport the city center.地铁将把机场和市中心连接起来。[高级表达](4)The girl likes yellow that is linked with confidence and self-respect.(用非谓语动词改写)The girl likes yellow .
between and
to
linked with confidence and self-respect
root n.根;根源 vt.&vi.(使)生根;(使)扎根※the root of the problem问题的根源 ※rooted adj.根深蒂固的;生根的(5)Tree roots can cause damage to buildings.树根会对大楼造成损害。(6)We have to get to .我们必须找到这个问题的根源。(7)His problems are deeply (root) in his childhood experience.他的问题的根源在于他的童年经历。
the root of the problem
rooted
Gregor Mendel chose to study pea plants because their characteristics were easy to control.格雷戈尔·孟德尔选择研究豌豆,是因为它们的特性容易控制。
1
※本句中的were easy to control是“be+adj.+to do”结构,是用主动形式表示被动意义。※在“主语+be+adj.+to do”结构中,不定式与句子主语构成动宾关系时,不定式仍用主动形式表示被动意义。常用于此结构的形容词有difficult,hard,easy,comfortable,pleasant,interesting,exciting等。
经典句式
(1)He found that the sentence was hard to understand.他发现这个句子很难理解。(2)It is difficult (answer) this question in a few words.这个问题三言两语很难说明白。[句型转换](3)When he turned on the computer,he found that the emails were hard to answer.→When he turned on the computer,he found .
to answer
the emails hard to answer
Using the wood wide web,plants can share information and even food with each other.使用森林网,植物可以分享信息,甚至可以彼此分享食物。
2
※本句中的Using the wood wide web是现在分词短语作方式状语。※现在分词作状语时,可表示时间、伴随、条件、原因、结果等,通常相当于一个状语从句或并列句。
(1)My father sat in the armchair,reading a magazine.=My father sat in the armchair and read a magazine.我父亲坐在扶手椅中看杂志。(表伴随)(2) (hear) the news,they got very excited.=When they heard the news,they got very excited.听到这个消息,他们很激动。(表时间)(3)Not (know) her address,I can’t write to her.=As/Because I don’t know her address,I can’t write to her.由于不知道她的地址,我无法给她写信。(表原因)
Hearing
knowing
(4)The cup dropped to the ground, (break) into pieces.=The cup dropped to the ground and broke into pieces.杯子掉到地上,摔成了碎片。(表结果)(5)Working hard,you will pass the final exam.= you work hard,you will pass the final exam.如果你努力学习,你会通过期末考试的。(表条件)[句型转换](6)The two students stood there and showed their paintings to us.→The two students stood there, .
breaking
showing their paintings to us
If
返 回
达 标 检 测
PART 4
当堂检测 基础达标演练
1.Police are blaming the accident dangerous driving.2.The minister declined (make) a comment on the situation.3.It is said that this kind of plants is native Italy.4.They are doing some research on the early (detect) of cancer.5.The brave servant rushed out and drove the young man .6.They believe that this illness is (link) to smoking.7.These memories are (root) in my heart and run deep.8.The old man made a nice kite (use) some recycled materials.
Ⅰ.单句语法填空
on
to make
to
detection
away
linked
rooted
using
1.Who this time?谁应该为这次巨大的损失承担责任?2.The sentence is too long. .这个句子太长了。确实很难理解。3.He made the boy sit there, .他让那个男孩坐在那儿,保证他们不会伤害他。4.He is sure that there is .他确信,大火和那起犯罪之间有联系。5.Their class to take part in the coming ceremony.据说他们班已经被选中参加即将到来的典礼。
Ⅱ.完成句子
is to blame for the great loss
It is really difficult to understand
promising they would not hurt him
a link between the big fire and the crime
is said to have been chosen
下面是根据课文内容写的一篇60词左右的内容概要,请根据括号内的汉语提示完成短文。New research has revealed that it appears that 1._____________________ (植物能彼此交流).2. (已经知道) plants can communicate using chemicals.Plants also use sound to communicate.Plants have a system of communication 3. (几乎把森林里的每株植物都联系起来).Plants can share information and even food with each other 4. (使用森林网).Some plants can steal food from each other and 5. (甚至袭击其他植物).
Ⅲ.课文缩写——概要写作
plants can communicate
with each other
It has been known that
linking nearly every plant in a forest
using the wood wide web
even attack other plants
返 回
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