（2020新版）外研版选择性必修一unit5 a journey of discovery知识点 共8张PPT.pptx

1、Unit 5 Revealing nature Understanding ideas The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”. The person who answered the call was not the captains first choice. It was a young man who had left medical school wit

2、hout completing his degree. Whats more, he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”. Despite all this, his adventures on this ship would lead to one of the most important scientific discoveries of all time. answer the cal

3、l 响应号召 answer the phone/door be a disgrace 是耻辱，丢脸的事 disgrace- shame lead to - result in of all time 有史以来 The young man in question, Charles Darwin, was a geologist and naturalist, fascinated by rocks, plants and animals. He left England on the ship, the Beagle, in 1831. The journey gave him the chan

4、ce to study various living things in their natural environments. in question 1. that is being discussed 2. in doubt；uncertain 讨论中的，所说的 有疑问，不确定 fascinated very interested or attracted fascinating extremely interesting and attractive various diverse 自然环境中的各种生物 After Darwin had spent some time in South

5、 America, his room on the ship was crowded with samples of the plants and animals he had collected. As he studied these, he asked himself the question: how did different species come to exist? be crowded with - be full of come to exist - come into existence come into being a crowd of 一群 crowd 人群，观众

6、crowd 人群，观众 avoid the crowds 避免拥挤 crowd in/into 大批涌入，进入 At that time, people believed that all species had appeared on Earth at the same time, and had not changed since. But Darwin began to think differently. He noticed that some species of animals were very similar to each other. Maybe animals evol

7、ved as they adapted to their changing environments? It was just an idea, but enough to inspire Darwin to look for more evidence. be similar to in similarity and difference similarly adapt - adjust adapt to sth 适应 adapt oneself to sth 使某人适应 be adapted from 根据改编 When the Beagle reached the Gal pagos I

8、slands in 1835, Darwin saw a variety of new species, but it was the birds that interested him the most. Darwin noticed that there was a difference between the finches on each of the islands. It seemed their beaks had evolved according to what food was available on that particular island. a variety o

9、f 种类繁多的，各种各样的 according to 据（所说），依照，根据 available 可获得的，可用的，有空的 eg.My bicycle is not available now, because it is being repaired. Sorry, but he is not available now. He is in conference. readily/freely/publicly/generally available 可以容易、免费、让公众、普遍得到的 Darwin suspected that the finches had evolved from a

10、common ancestor, which had arrived on the islands a long time before. Over time, it had slowly evolved into many new species. And that was the answer to how new species of plants and animals came to exist: they evolved from earlier ancestors. suspect vt. 认为，怀疑 n.嫌疑犯 suspect sb of doing sth 怀疑某人做某事 s

11、uspect sb to be 怀疑某人是 be suspected of 涉嫌 doubt whether/if It was a completely new ideaa theory of evolution. Darwin explained this theory in his book, On the Origin of Species. It was not published until 1859 and immediately caused a storm. Many people refused to believe that living things, includin

12、g humans, had evolved from lower forms of life. They were shocked. But Darwins scientific studies were so convincing that more and more people started to believe his theory. notuntil be shocked - be very surprised be a shock to sb 让某人着实一惊 be shocked at/by 因为而震惊 convincing 令人信服的，有说服力的 be convinced of 相信 convince sb of sth 使某人相信 convince sb to do sth 说服某人