优课高中英语人教版BOOK9 UNIT 4 EXPLORING PLANTS READING 课件 .ppt

1、1._vt.vi.发展；进展；进化_n.演变；进化2._vt.缚上；系上；附加3._adj.芬芳的；香的4._adj.典型的，有代表的_adv.5._adj.精巧的；脆弱的；微妙的6._n.气味；香味；臭味_adj.没有气味的；无嗅的7._adj.不鲜明的；阴暗的8._adj.发霉的；有霉味的9._adj.果味的；（酒）有葡萄味的10._vt.对授粉_n.虫媒Answers:1.evolve,evolution 2.attach 3.fragrant 4.typical,typically 5.delicate 6.odour,odourless7.dull 8.musty 9.fruity

2、10.pollinate,pollinator11._贴上；附上12._发出(气味、热等);分发Answers:11.attach to 12.give outchrysanthemum pollinatepollinator petalDo you know any animal pollinators?beeflywasp(黄蜂)hummingbirdbutterflymoth At the end of this class,students will be able to1.know something about flowers and their animal pollinator

3、s by skimming and answering the questions.2.know something about nature and love nature.1.Before you read the text on Page 38,have a quick glance at it.What is the text about?_The text is about flowers and their animal pollinators.Company LogoSkimming:structure of the text2show different kinds of an

4、imal pollinators and their flowers1some knowledge about flowers and their animal pollinators3Lists animal pollinators and the characteristics of the flowers they pollinatethree paragraphspictureschartPara.1-3:Q2:Why do some plants need animals?Q1:What is the advantage for animals of visiting flowers

5、?Animals get food called nectar from the flowers.Some plants need animals to pollinate them.Q3.How does an animal pollinate a flower?An animal pollinates a flower by collecting pollen（花粉）from a flower and passing it on to another flower.Q4.What kinds of animals are most flowers pollinated by?Most fl

6、owers are pollinated by bees,moths and butterflies.Q5.what features of a flower are important in attracting animal pollinators?The features of a flower that are important in attracting animal pollinators are its color,shape,size and smell.Q6.The word“evolve”means _.A.develop B.rely on C.influence D.

7、affect1.Bees follow colored lines to the nectar inside the flower.2.Flowers that are white or pale can be seen by night pollinators.3.Butterflies are attracted to sweet-smelling flowers.TFChart:True or FalseT4.Bats pollinate flowers at night.5.Flower color is not important to hummingbirds.6.All poll

8、inators need to land on the flower if they are to find the nectar.TFF1.So pollination takes place,therefore increasing the chances of the survival of the plant species.Part III.Long and difficult sentences:therefore/thus doing sth现在分词作结果状语这样通过授粉就增加了植物物种生存的机会。His parents died,leaving him an orphan.他父

9、母死了，他成了孤儿。2.Pollen becomes attached to the animal during its visit to a flower and is then passed on to another plants blossom on its next visit.attach to 把附加、系上或缚在上动物接触一朵花后，花粉就附着在它的身上，动物接触下一种植物的花时就把这些花粉传到花朵上。He attached a label to each piece of luggage.他把每件行李都贴上标签。3.Through evolution,most flowers h

10、ave adapted to attract specific types of pollinators.通过进化，大部分花朵变得适于吸引特殊种类的花粉传播者。adapt to 使适应，改编The spokesman adapts his speech to suit the interests of his audience.这个发言人把讲演修改了一下，以适应听众的趣味。He has adapted to the climate there.他已经习惯于那里的气候了。Find other nouns in the chart that mean the sameas“smell”.List

11、adjectives from the chart that are used to describe different kinds of smells.Nouns that mean“smell”:_.Adjectives that describe smells:_.odour,perfumedelicate,fragrant,odourless,strong,sweet,musty,fruitycactus flowers(仙人掌花)kktsbats,mothsIn groups,look at the pictures and decide what kinds of pollina

12、tors these plants might have.Give reasons for your answers.fuchsias fju(倒挂金钟属植物)hummingbirdsperuvian lilies(秘鲁百合)pru:vinbeestrumpet flower(喇叭花)trmpithummingbirdsbutterflies chrysanthemum(菊花)butterflieshibiscus(木槿)haibisksbutterflieshummingbirdswild ginger flowerflies dind细辛花johnny jump ups(三色堇)BeesWrite a short passage about flowers and their animal pollinators according to what we have learned in this class.