Unit 5 Section Ⅳ（课件PPT）-【精讲精练】2026-2027学年高中英语选择性必修第一册（外研版）

该高中英语课件聚焦植物观察日记写作，通过“文体指导（人称、时态、顺序）—常用表达—选词造句—句式升级—连句成篇”的脉络，以大蒜种植、向日葵生长等实例导入，搭建从基础规范到综合应用的学习支架。 其亮点在于融合语言能力（科学细节描写）、思维品质（时间顺序分析生长过程）和学习能力（提供句式升级如定语从句合并、倒装句改写实例）。典型例析按Week1-8分阶段连句成篇，学生能提升逻辑表达与观察能力，教师可直接使用系统教学步骤和实例，高效开展写作教学。

Section Ⅳ　Writing UNIT 5　Revealing nature UNIT 5　Revealing nature 1 写作培优•妙笔生花 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 in the center of has been added were put in a spot to protect the seeds from burning UNIT 5　Revealing nature 1 has been watered daily which are long and narrow with at least 6 hours of indirect sunlight UNIT 5　Revealing nature 1 will burn has a number of have been transplanted from pots to open soil UNIT 5　Revealing nature 1 On the stem are several leaves，which are long and narrow. Water has been added and the pots were put in a spot with 12－16 hours of indirect sunlight，the purpose of which is to protect the seeds from burning. UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 UNIT 5　Revealing nature 1 谢谢观看 UNIT 5　Revealing nature 1 写观察日志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。本单元所要求写作的植物观察日志要求学生能够用具体且科学的语言描绘植物的生长过程。 写植物观察日志要注意以下三点： 正确的人称 观察日记是记录植物的生长变化的书面材料，故一般用第三人称。 正确的时态 观察日记一般记叙已经发生了的事，因此多用现在完成时和一般过去时。但如果谈论个人感悟或客观事实等，也可用现在时态。 正确的顺序 根据事物的不同情况，采取合理的观察方法。如果你观察的是静物，或者其他变化不明显的物体，可以按照从整体到局部的顺序进行观察并描述。如果你观察的事物是变化比较明显的，可以按时间顺序进行观察和叙述。 1．开头直接切入话题 (1)I once lived in the countryside，during which I planted some garlic in the garden. (2)One day I buried some seeds of sunflowers into a basin，where there was some rich soil.After pouring some water into it，I began to observe it with great patience. 2．按照时间发展顺序详细介绍观察的过程 (1)I used the cultivator to loosen the soil all around the hole to make it easier for the roots to spread. (2)Seeing that the soil was a little dry，I added some water to it again. (3)Gradually the beans were coming into leaf.Now and then I sprinkled water on them so that they grew well. (4)As time goes on，more leaves grow from the stem，making it possible for the plant to receive more sunlight. (5)Another few days passed the flower bud became visible at the tip of the sunflower stem. (6)About a month later，yellow flowers came out，which meant young peanuts were being produced in the soil. 3．结尾描述自己对观察到的景象的感受或认识 (1)How amazing it is to watch a seed become a tall plant! (2)I can't wait to show my grandparents the fruit trees I have planted. (3)Seeing the flowers，I was too excited to express my feelings. (4)It is from this experience that I learned/realized that “No pain，no gain”． 仔细观察下列有关竹子种植的图画，写一篇有关竹子成长的观察日记。 ________________________________________________________ ________________________________________________________ ________________________________________________________ [审题构思] 1．确定体裁：观察日记 2．确定人称：第三人称 3．确定时态：一般现在时和现在完成时 4．确定内容： 首段：竹子的前段生长周期所见或所做； 中段：竹子的中段生长周期所见或所做； 尾段：竹子的后段生长周期所见或所做。 [遣词造句] 1．在每个花盆的中央种上一粒种子。 A single seed has been planted_________________ each pot. 2．加水，把花盆放置在间接日照12～16小时的地方。 Water_______________ and the pots __________________ with 12－16 hours of indirect sunlight. 3．这样做的目的是防止种子被晒伤。 The purpose of it is__________________________________． 4．每个花盆每天都浇水。 Each pot ______________________． 5．茎上有几片叶子，叶子又长又窄。 Several leaves on the stem，_________________________． 6．花盆被放置在间接日照至少6小时的地方。 The pots have been placed in a location ________________________ __________． 7．直接照射的阳光会灼伤竹子幼苗。 Direct sun _________ the bamboo seedlings. 8．它的茎已经长到大约30厘米高，每个茎上都有许多绿叶。 The stems have grown to around 30 centimetres tall and each _______________ green leaves. 9．竹子已经从花盆中移植到开阔的土壤中。 The bamboo plants ________________________________________． [句式升级] 10．用定语从句把句2、句3合并成一个句子 ________________________________________________________________________________________________________________________________________ 11．把句5改写成一个倒装句 _____________________________________________________ [连句成篇] Week 1 A single seed has been planted in the center of each pot.Water has been added and the pots were put in a spot with 12—16 hours of indirect sunlight，the purpose of which is to protect the seeds from burning.Each pot has been watered daily.Before long，the sprouts start to pop out of the soil. Week 5 To my delight，on the stem are several leaves，which are long and narrow.The pots have been placed in a location with at least 6 hours of indirect sunlight.Direct sun will burn the bamboo seedlings，so make sure that the plants get about half sun，half shade. Week 8 The stems have grown to around 30 centimetres tall and each has a number of green leaves.The bamboo plants have been transplanted from pots to open soil.And the new bamboo plants are watered 2—3 times a week. $