选择性必修 第一册Unit 5 Revealing nature课文配套ppt课件

这是一份选择性必修 第一册Unit 5 Revealing nature课文配套ppt课件，共27页。PPT课件主要包含了seed，sample，ancestor，decline，blame，primitive，root，link，centimetre，are linked等内容，欢迎下载使用。

1．____ n．种子，籽2．______ n．样本3．________ n．(动物的)原种，祖先4．_______ v．减少5．_____ v．责怪，指责；把……归咎于
课时练案 单元词汇表(Wrds and expressins)
6．gat n．____ 7．_________ adj．原始的， 低等的8．____ n．根9．____ v．把……联系起来；连接10．__________ n．厘米
1． The hearts f the peple f all the natinalities __________ (link) t each ther．2．The difference between the tw _______ (sample) was nt statistically significant．3．If yu lse yur jb，yu'll nly have yurself ________ (blame)．4．The number f staff ____________ (decline) frm 217，000 t 114，000．5．Scientific evidence suggests that sea levels here will rise by at least 30 ___________ (centimetre) by 2030．6．Sme festivals are held t hnur the dead r t satisfy the ________ (ancestr)．
has declined
centimetres
1．distant adj．遥远的→ ________ n．距离2．gelgy n．地理学→ _________ n．地质学家3．evlve v．进化→ _________ n．进化(论) → _______ adj．进化的4．suspect v．猜想，怀疑，觉得 n．嫌疑人，可疑分子→ _________ n．怀疑，疑心，嫌疑→ __________ adj．怀疑的，可疑的
5．generate v．产生，创造→ __________ n．一代；产生6．character n．特点；角色；人物→ ______________ n．特征，特性7．detect v．发现，察觉(尤指不易觉察到的事物)→ _________ n．侦探，警探→ __________ n．侦查；探测→ ________ n．探测器
characteristic
1．Thugh there is a lng ________ between Tm and his family, they dn't feel _______．(distant)2．The plice _________ that tw f the ________ caught yesterday were cnnected with anther case．They were mre ______________．(suspect)3．There are five __________ in this play, but they have their wn _______________．(character)
characteristics
4．Small quantities f pisn were ________ in the dead man's stmach．The _________ f crime is nt always easy．(detect)5．The keynte speech is abut the _________ (evlve) f the cmputer．6．The singer is regarded as a representative f the yuth f her __________ (generate)．
1．___________ 有史以来2．_______________ 挤满，充满3．_____________ 是耻辱，是丢脸的事4．_____________ 开始存在，产生5．___________ 有问题的，讨论中的
be crwded with
be a disgrace
cme t exist
6．________ 适应7．____________ 源于……的，原产于……8．___________________ 把……归咎于……9．____________ 各种各样的10． __________________ 赶走……11．_______________ 少量的
be native t
blame．．．n．．．
a variety f
drive．．．away
tiny amunts f
1．Many cuntries have adpted birds that _____________ the cuntry r which migrate thrugh the regin．2．The plice vehicle __________ quickly with its lights flashing．3．The by wndered hw the universe first _____________．4．Thugh nt very big, the restaurant is ppular in ur area．It __ always ____________ custmers at mealtimes．5．The wrld will be different，and we will have t be prepared t________ the change．
are native t
came t exist
crwded with
词汇联想 由新知联想已知
⑥pianist 钢琴家⑦bilgist 生物学家⑧typist 打字员2．answer the call 响应号召[联想]　 “响应号召”的其他表达①reply the call ②respnd t the call
1．gelgist n．地质学家[联想]　 含“-ist(人)”词根的名词①nvelist 小说家②dentist 牙医③physicist 物理学家④receptinist 接待员⑤chemist 化学家
①distant cuntries yet little knwn遥远而不知名的国家②answer the call响应号召③ne's first chice某人的首选④what's mre再者，而且⑤ne f the mst imprtant scientific discveries f all time有史以来最重要的科学发现之一
课下预习 第一篇课文(Understanding ideas)
⑥in questin被提及的，讨论中的，相关的⑦Charles Darwin查尔斯·达尔文(1809年2月12日至1882年4月19日)，英国生物学家，进化论的奠基人，出版《物种起源》。⑧(be) fascinated by对……入迷；被……迷住⑨be crwded with挤满……⑩cme t exist开始存在⑪at the same time同时⑫be similar t和……相似
⑬adapt t their changing envirnments适应它们变化的环境⑭Galápags Islands加拉帕戈斯群岛⑮a variety f new species多种多样的新物种⑯accrding t根据，按照⑰ver time随着时间的推移⑱the answer t...……的答案⑲a thery f evlutin进化论⑳be regarded as被认为是
A Jurney f Discvery The captain f the ship，the Beagle，wanted smene wh wuld “prfit by the pprtunity f visiting distant cuntries yet little knwn①”．The persn wh answered the call② was nt the captain's first chice③．It was a yung man wh had left medical schl withut cmpleting his degree．What's mre④，he had recently received a letter frm his father predicting that he wuld be “a disgrace t yurself and all yur family”． [1]Despite all this，his adventures n this ship wuld lead t ne f the mst imprtant scientific discveries f all time⑤．
[1]句中的predicting...是动词-ing形式短语作定语，修饰a letter。
The yung man in questin⑥，Charles Darwin⑦，was a gelgist and naturalist，fascinated by⑧ rcks，plants and animals．He left England n the ship，the Beagle，in 1831．The jurney gave him the chance t study varius living things in their natural envirnments．After Darwin had spent sme time in Suth America，his rm n the ship was crwded with⑨ samples f the plants and animals he had cllected．As he studied these，he asked himself the questin：hw did different species cme t exist⑩？
At that time，peple believed that all species had appeared n Earth at the same time⑪，and had nt changed since．But Darwin began t think differently．He nticed that sme species f animals were very similar t⑫ each ther．Maybe animals evlved as they adapted t their changing envirnments⑬？It was just an idea，but enugh t inspire Darwin t lk fr mre evidence．
When the Beagle reached the Galápags Islands⑭ in 1835，Darwin saw a variety f new species⑮，but it was the birds that interested him the mst[2]．Darwin nticed that there was a difference between the finches n each f the islands．It seemed their beaks had evlved accrding t⑯ what fd was available n that particular island．[3]
[2]此处为“It was．．．that．．．”强调句型，强调主语the birds。[3]句中的what引导宾语从句，作介词t的宾语。
Darwin suspected that the finches had evlved frm a cmmn ancestr，which had arrived n the islands a lng time befre． [4]Over time⑰，it had slwly evlved int many new species．And that was the answer t⑱ hw new species f plants and animals came t exist：they evlved frm earlier ancestrs．
[4]that引导宾语从句，which引导非限制性定语从句，修饰先行词a cmmn ancestr。
It was a cmpletely new idea—a thery f evlutin⑲．Darwin explained this thery in his bk，On the Origin f Species[5]．It was nt published until 1859 and immediately caused a strm．Many peple refused t believe that living things，including humans，had evlved frm lwer frms f life．They were shcked．But Darwin's scientific studies were s cnvincing that mre and mre peple started t believe his thery． [6]
[5]On the Origin f Species是his bk的同位语。[6]s．．．that．．．如此……以至于；that引导结果状语从句。
Tday，On the Origin f Species is regarded as⑳ ne f the mst imprtant wrks ever written [7]．It has changed ideas abut life n Earth frever．And it all began with the jurney n the Beagle．
[7]ever written为过去分词短语作后置定语，修饰wrks，相当于定语从句that were ever written。
发现之旅贝格尔号的船长想要招募这样一名船员，这名船员将能“借此机会访问遥远而鲜为人知的国度并从中受益”。然而来应聘的人并不是船长心中的理想人选。这个年轻人从医学院肄业，并且在他刚收到的家书中，父亲预言他将会成为“自己和全家人的耻辱”。尽管如此，他的这次乘船探险之旅将带来有史以来最重要的一项科学发现。
我们提到的这个年轻人就是地质学家和博物学家查尔斯·达尔文，他对岩石和动植物有着浓厚的兴趣。1831年，他搭乘贝格尔号从英格兰启程。这趟旅程给了他研究自然环境中各种生物的契机。在南美洲度过一段时间后，他的船舱里堆满了收集到的动植物样本。当他研究这些样本时，他产生了疑问：这些不同的物种是如何产生的？
当时，人们认为所有的物种都是同时出现在地球上的，并从此再无变化。但达尔文开始有了不同的想法。他注意到，有些不同物种的动物彼此间很相似。也许动物为了适应不断变化的环境会逐渐进化？虽然这只是一个设想，但足够鼓舞达尔文去寻求更多证据。1835年，当贝格尔号抵达加拉帕戈斯群岛的时候，达尔文发现了各种各样的新物种，但是其中最令他感兴趣的是鸟类。达尔文注意到，在群岛中的每一个小岛上，雀鸟之间有所不同。它们的喙似乎是根据所在岛屿上可觅得的食物进化而来的。
达尔文猜想，这里所有的雀鸟都由共同的祖先进化而来。很久以前，雀鸟的祖先来到这片群岛，随着时间推移，慢慢进化成许多新的种类。于是，关于动植物的新种类是如何产生的这个问题就有了答案：它们是从早期的祖先进化而来的。这是一个全新的观点——进化论。达尔文在他的《物种起源》一书中对此进行了解释。这本书直到1859年才出版，出版后立即引起轰动。很多人拒绝相信包括人在内的所有生命都是从更低级的生命形式进化而来的。他们对此感到震惊。然而达尔文的科学研究很有说服力，越来越多的人开始接受他的理论。