（2019新教材）外研版高中英语选择性必修一Unit 5 Developing ideas 同步ppt课件.pptx

1、Unit 5 Revealing Nature Period 3 Developing ideas Pre-reading Look at the pictures and tick what plants can do. pattack pbreathe peat psleep pmove pspeak psteal pthink Now talk about what else you think plants can do and give examples. Activity 2: Read the passage and find out the ways in which plan

2、ts communicate. Plants can communicate with each other by using chemicals, sound and “wood wide web”. Reading comprehension: 1.The recent scientific studies have shown that plants can_. A. communicate with other living things in a chemical way when being eaten by an insect B. hardly react to the che

3、micals the neighbour released C. can release some chemicals from the leaves that are being eaten to drive the insects away D. call the wasps to kill the insects that are eating their leaves 2. What can we infer from Paragraph 4? A. People cant hear the noise created by the plants because we cant use

4、 sound to communicate with them. B. All the plants can make noises with their roots. C. Only chilli plants can tell if a neighbour plant is helpful or unfriendly. D. When some plants make clicking noises, perhaps it suggests drought is coming. Reading A D Reading comprehension: 3. How do you think t

5、he plants link with each other in a forest? A. They can keep linked by cables and satellites like the Internet we use. B. They have an amazing system of communication called “wood wide web”. C. They are linked underground by their roots. D. They use the fungal network to share information and food b

6、ut they cant attack others like our own Internet. 4. What might be the authors purpose in writing the text? A. To tell us the importance of talking plants. B. To convince people that talking plants are only a thing of myths and legends. C. To introduce some ways in which plants communcate. D. To tel

7、l the readers how to communicate with plants. 5.The text is likely to appear in _. A. a newspaper advertisement B. a diary C.a science magazine D. a guidebook Reading B C C Activity 3: Organise information from the passage and complete the diagram. Reading Modern research is showing that plants can

8、1._ Using chemicals The plant releases chemicals 2._that are being eaten. When another plant detects the chemicals, it starts to 3._ Using sound Some plants make noises 4._ A chilli plant can 5._ Some trees make 6 ._ Using the “wood wide web” This fungal network links7 ._ Plants can 8._with each oth

9、er. Plants can 9._ to attack other plants. Maybe one day we will be able to “talk” with plants. municate with each other 2. from the leaves 3.release its own, different chemicals 4.with their roots 5.tell if a neighbouring plant is helpful, or unfriendly 6.clicking noises when there is not enough wa

10、ter, indicating drought is arriving 7.the roots of different plants to each other 8.share information and even food 9.steal food from each other, or spread poisons Summary: 根据课文内容写一篇60词左右的概要。 参考答案1： Modern research is showing that plants can talk. (要点1) Some plants use chemicals to communicate with

11、each other.(要点2) Some plants make noise to communicate. (要点3) Using the wood wide web, plants can share information and food with each other. (要点4) Scientists may know enough about plant communication to talk with plants. (要点5) 参考答案2： Recent research has shown that plants can talk. Some plants use c

12、hemicals to communicate with each other while some use sound. Most surprisingly, plants can share information and even food according to the wood wide web linked by fungi. With scientists keeping learning more about the secret method for plants to talk, it may be possible for people to know how to t

13、alk with plants. Analyze sentences: 1.Alexander the Great and Marco Polo were said to have visited such a tree in India. Paraphrase: It is said that Alexander the Great and Marco Polo had gone to see a tree like that in India. sb be said to do= It is said that sb. = people say sb.即“据说某人做了某事”。 例如: It

14、 is said that Darwin is the writer of the book On the Origin of Species. (据 说Darwin是物种起源一书的作者。 ) sb. be said to do.据说某人做据说某人做. sb. be said to be doing.据说某人正在做据说某人正在做. sb. be said to have done.据说某人曾做过据说某人曾做过. 练习：练习：Regulators _(据说正在调查据说正在调查)how the accident occurred. are said to be examining Analyze

15、sentences: 2.On each stem are two leaves, which are long and narrow with a waxy texture. Translate: 每根茎上有两片叶子，又长又窄，有蜡质的质地。 为使描写更生动或为使上下文衔接更紧密，句子可以使用完全倒装。此句中 完全倒装结构为：表示地点的介词短语+系动词+主语；但前提是主语为名词； 句子谓语为be动词或表示存在/移动的不及物动词(如lie/live/sit/stand等) 注意：注意：1.主语为代词时，不用倒装语序。主语为代词时，不用倒装语序。 2.完全倒装结构注意主谓一致：谓语的单复数要看后

16、面的主语。完全倒装结构注意主谓一致：谓语的单复数要看后面的主语。 练习：练习： _(学校的中心坐落着学校的中心坐落着) our library, which is between the garden and the teaching building. In the center of our school lies/is 课文语法填空 1._has been believed for a long time that talking plants are fantasy. But new research has revealed that they really can communic

17、ate with each other. Some plants are believed to communicate with each other through chemicals. When 2._ ( attack) by insects, they release tiny amounts of chemicals to call for help as wellas warn their neighbouring plants 3_ the insects. When other plants detect 4._warnings, they release their own

18、 chemicals to drive away the insects. Some of the chemicals also attract wasps to kill these insects. More 5._ ( surprising), some plants also use sound 6._ (communicate) with each other though people cant hear the sound. Some plants make noises with their roots. Some plants listen to tell if theirn

19、eighbouring plants are 7._( help) or unfriendly. Some plants make clicking noises, 8._(indicate) that drought is coming. Most surprisingly of all, plants can form the wood wide web to share information or even food with each other. 9._ (scientist) will learn more about the way in 10._ plants communicate with each other. It attacked the of surprisinglyto communicate helpfulindicating Scientistswhich