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1、Unit 4 Exploring plants第四课时Aim:To make students understand the textFlowers and their animal pollinatorsContents:L Questions:1) What is the text about?2) What do the pictures show you?3) What is the chart about?4) What is the advantage for animal of visiting flowers?5) Who do some plants need animals
2、?6) How does an animal pollinate a flower?7) What is nectar?8) What kinds of animals are most flowers pollinated by?IL Language pointsover time随着时间的推移over the weekend整个周末里over these years在这些年里reward sb. w汕sth.用回报某人1. attach.to 依附于bpass on to把往下传2. adapt to使适应The spokesman adapts his speech to suit t
3、he interests of his audience.He has adapted to the climate here.3. describe . as把描述成guide sb. to s.p.把.领至U4. land on 登陆provide sb. with sth.向提供provide sth. for sb.provide for养活，规定Difficult sentences1) Pollen becomes attached to the animals during its visit to a flower and is then passed on to another planfs blossom on its next visit,动物接触一朵花后,花粉就 附着在它身上，动物接触下一种植物的花时就把这些花粉传到花朵上。2) Through evolution, most flowers have become adapted to attract specific types of pollinators.通过进化，大局部花朵变得适于吸引特殊种类的花粉传播者。