Unit 5 Revealing nature Developing ideas 课件-2024-2025学年高中英语外研版（2019）选择性必修第一册

Unit 5 Revealing nature Writing 1 Part One Comprehension and practice To read and understand the passage. To deal with the phrases in the passage. To master how to write an observational journal. To learn to recommend a nature documentary. Learning aims Read the observational journal and answer the questions. 1. How were the daffodil bulbs planted? 2. In what environment did the leaves grow? 3. What do the flowers look like? Reading comprehension They were planted side by side in soil, with the pointed ends facing up. The leaves grew in a sunny, but cool place. The flowers are yellow and white,and shaped like trumpets. 1. 观察日记 _____________________ 2. 并排 _____________________ 3. 从……喷出，涌出 _____________________ 4. 具有蜡状质地 _____________________ 5. 形状像 _____________________ Important phrases an observational journal side by side sprout from with a waxy texture be shaped like Work in pairs. Look at the pictures and talk about how the sunflower grows. Writing practice Now write your observational journal about the sunflower. Pay attention to the following parts: Handwriting Expressions Writing practice An observational journal about the sunflower 1 June Covered with 1-2 cm of moist soil, the sunflower seed takes a few days to come up after being planted. Water has been added regularly and the hard seed coat softens in the damp soil to allow the first root to pierce downwards and the first leaves to push to the soil surface. One possible version An observational journal about the sunflower 6 July The root continues to grow downwards. The single stem grows hollow and smooth, revealing large spade-shaped leaves from the growing tip. Gradually, the plant’s growing tip reveals the first hints of development of the flower bud. The plant stem becomes more woody. One possible version An observational journal about the sunflower 26 July About three weeks after the flower bud first becomes visible at the tip of the sunflower stem, it enlarges and begins to reveal a flattened disc. Over the course of one week, the yellow ray florets, the disc florets bloom across the core of the sunflower blossom. It is yellow, looking beautiful. One possible version Part Two Writing 观察日记的写作不仅能培养学生的观察能力，也能锻炼学生描写具体细节的写作能力。观察的对象可以是人、动物、植物或其他物品。本单元所要求写作的植物观察日记要求学生能够用具体且科学的语言描绘植物的生长过程。 写作指导——如何写植物观察日记 写植物观察日记要注意以下四点： 1. 观察日记要体现时间上的逻辑性。在写植物类观察日记时，一般将植物的生长过程分为不同的阶段。因此在写作的过程中要恰当使用表达时间顺序的词、短语或句子。 2. 语言要准确。观察日记有很强的科学性，因此措辞要准确。 3. 观察的内容要细致全面，抓住植物生长不同阶段的主要特征，并在细节处加以描写。这样可以使表达的内容更加丰富。 4. 主体人称是第三人称，主体时态是一般现在时。   写作指导——写作注意事项 常用表达 1. 种植及发芽阶段 …. has/have been planted in soil (a pot /flowerpot /flowerbed/….) .….need(s) watering regularly. I water it every three days. It is necessary to keep the soil damp/put them in the shade/put them in a cool place/…. The seed sprouts two days after...   写作指导——常用表达 常用表达 2. 生长发育阶段 I’ll cover it when the weather is cold. New leaves sprout from the stem. A flower bud is growing at the top of the stem. ...come(s) out. A bud gradually becomes a flower. The roots grow deeper into the soil.   写作指导——常用表达 常用表达 3. 成熟、结果阶段 ….grow(s) into.... Each stem produces a single flower. As time goes by, it goes/runs to seed. .….grow(s) taller and stronger... ....flower(s) the following day. The white flowers have fallen from the stem.     写作指导——常用表达 请根据下面所给图片，用英语写一篇观察日记，描述花生(peanut)的生长过程。要点包括： 1. 播种及发芽阶段(播种时间：4月初)。 2. 生长及发育阶段（5一6月)。 3. 成熟及结果阶段(7-8月)。 注意：1.词数100左右； 2.可适当增加细节，以使行文连贯。 写作训练 花生(peanut)的生长过程 写作训练 It is the right time to sow peanuts in early April every year. First, we shell the peanuts before sowing the seeds in the soil. Since it rains a lot in April, there is no need to water the seeds. About one week later, we can see sprouts grow out of the soil. One possible version The tender sprouts keep growing up. Soon, they grow into leaves. As time goes on, more leaves grow from the stem in May, which can receive more sunlight to help the plants grow up. About a month later, yellow flowers come out, which means young peanuts are being produced in the soil. One possible version In July and August, the young peanuts become mature in the soil when the flowers fall. When the nuts become mature enough, farmers dig them out and make them into all kinds of delicious foods. One possible version Part Three Presenting ideas Presenting ideas Look at the information about the nature documentaries and answer questions. 1. Can you guess what secrets of nature are revealed in these documentaries? 2. What other nature documentaries have you watched? Which one do you like most? Presenting ideas The answer may vary. Presenting ideas Choose one nature documentary you like and complete the notes. Title: _______________________. Main theme: _________________________________________________. Reasons you recommend it: _____________________________________. Born in China The life of three kinds of unique animals born in China Zero negative comments; Moving stories Presenting ideas Practise presenting information about your documentary. Consider the following: 1. the structure of your presentation 2. useful words, expressions and structures 1 ….whose topic ranges from…to…is well worth watching. 2. Unique features of…is closely watched at. 3. The reason why I strongly recommend it is that… 4. You are bound to love it. Useful expressions Give your presentation to the class. Practice $$