人教版（2024）八年级上册（2024）Unit 4 Amazing Plants and Animals Section B教学课件ppt

这是一份人教版（2024）八年级上册（2024）Unit 4 Amazing Plants and Animals Section B教学课件ppt，共25页。PPT课件主要包含了Example等内容，欢迎下载使用。
Learning Objectives
In this lessn, yu will:
【学习理解】Extract key scientific facts abut blue whales and rganize them systematically in a table.【应用实践】Rewrite the expsitry text int a first-persn self-intrductin, accurately cnverting scientific facts.【迁移创新】Learn abut marine ecsystems and blue whales' rle; enhance awareness f cean prtectin.
Watch the vide
What des this vide talk abut?
What d yu knw abut the blue whale?
Pre-reading
Read the text and cmplete the table.
The blue whale is the largest and heaviest animal n earth. It can weigh as much as 200 tns. Many peple like watching blue whales swim, and they think it is ne f the mst beautiful things t see. Blue whales live in all ceans except the Arctic Ocean. They eat a lt, but they eat sme f the tiniest animals in the cean. A blue whale can eat arund fur tns f these a day.
prep. 除……之外；除了
adj. 极小的；微小的
Blue whales can live up t 90 years. When a blue whale dies at sea, it becmes fd fr many kinds f animals living in and arund the sea. This fd lasts fr ver a year and it helps t create a lively and healthy ecsystem. Blue whales play an imprtant rle in ur wrld, s we must prtect them.
live up t活到……岁；达到……的寿命
adj. 精力充沛的；生机勃勃的
as much as 200 tns
in all ceans except the Arctic Ocean
sme f the tiniest animals in the cean
up t 90 years
When a blue whale dies, it becmes fd fr many animals and it helps t create a lively and healthy ecsystem.
When a whale dies and sinks, it becmes a whale fall – like an underwater buffet(自助餐) fr deep-sea creatures!
Think and Share
Hw d yu feel abut the whale fall?
What can yu learn frm the whale fall?
Amazing, magic, unbelievable, sad but hpeful...
Whales eat tns f fd when alive, but their bdies feed the deep sea after death. That’s nature’s perfect balance!
Imagine yu are a blue whale. Use the first persn t rewrite the first paragraph.
Hell everyne! My name is Billy the Blue Whale. I am __________________________________________________________________I'm heavy, but I ________________________________________________________________________________________________I live in_____________________________I can eat ___________________________________________.
largest and heaviest animal n earth. I can weigh up t 200 tns.
lve swimming in the cean freely.
all ceans except the Arctic Ocean.
arund fur tns f fd a day.
Humans ften say watching me swim is ne f the mst beautiful sights in the cean.
Cmplete yur passage abut the blue whale based n the text in 3a.
要求完成段落的改写，主要改写内容为3a第二段的内容，涉及到蓝鲸的寿命和对生态环境的重要性等内容。
本文将第三人称的段落内容，改写为第一人称的段落内容。分析原文章属于介绍类文章，改写后，还是自身特性介绍，因此是说明文。
以第一人称为主；以一般现在时为主。
What shuld we mainly pay attentin t when rewriting an article?
人称: 由第三人称变成第一人称
内容要点: 要点不能省略或者遗漏。
语言: 个别句子需要变化结构
living area
preference（喜好）
Observe and think
Hw t use the first persn t rewrite the secnd paragraph?
rle /functin
Write yur article accrding t the infrmatin mentined abve. Pay attentin t yur spelling and structure.
Nw, yu can exchange yur writings with yur partner t check each ther’s writing.
I can live up t 90 years. When I die at sea, I becme fd fr many kinds f animals living in and arund the sea. This fd lasts fr ver a year and it helps t create a lively and healthy ecsystem. I play an imprtant rle in ur wrld, s yu must prtect me.
Language Pints
1. Blue whales can live up t 90 years. 蓝鲸的寿命可达 90 年 。live up t 达到；符合（期望等）；活到（某一年龄、岁数等）例如：He always lives up t his parents' expectatins. 他总是不辜负父母的期望。【拓展】同义词reach 达到（某一数量、程度、年龄等 ）；在表示活到某一年龄时，可与 “live up t” 替换。Sme trees can reach a height f 30 meters. 有些树能长到 30 米高 。Sme peple can reach 90 years ld. 有些人能活到 90 岁 。
2. When a blue whale dies at sea, it becmes fd fr many kinds f animals living in and arund the sea. 当一头蓝鲸在海洋中死去时，它会成为生活在海洋里及海洋周边的多种动物的食物。living in and arund the sea 整体是现在分词短语作后置定语，修饰前面的 animals。相当于一个定语从句 which/that live in and arund the sea。例如：The by standing there is my brther. 站在那儿的男孩是我弟弟 standing there修饰 the by，可转换为 The by wh/that is standing there is my brther.
Why shuld we prtect animals and plants?Because they are ur friends and they help keep the balance f nature.
一、完成句子1.他一直努力达到父母的期望。He is always trying his best t _____ ____ _____ his parents' expectatins(期盼).2. 二十四节气在中国文化中起重要作用。The 24 slar terms _____ ____ _________ _________ _____ Chinese culture.3.假如鸟吃了有病的或死的鱼，它们可能会相继死去。If the birds eat the sick r dead fish, they may ________ ________.
live up t
play an imprtant part/rle in
die ff
4.这个有趣的部分才持续了半个小时。时间真短啊!This interesting part nly ________ ________ half an hur. ________ ________ it was!5.有了灯泡，人们可以在夜里做和白天一样多的事情。With light bulbs, peple can d _____ ______ ______ in the evenings ________ they can in the daytime.
lasted fr
Hw shrt
as many things
I am a blue whale. I am the largest and 1. _______ (heavy) animal n earth. I can weigh as 2. _______ (much) as 200 tns. Many peple like watching me 3. _______ (swim), and they think I am ne f the 4. _____________ (beautiful) things t see. I live in all ceans except the Arctic Ocean. I eat a lt, but I eat sme f the 5. _______ (tiny) animals in the cean. I can eat arund fur tns f these a day. I can live up 6. _____ 90 years. When I 7. _______ (die) at sea, I becme fd fr many kinds f animals 8. ______ (live) in and arund the sea. This fd lasts fr ver a year and it helps create a lively and 9. ______ (health) ecsystem. I play 10. _____ imprtant rle in yur wrld, s yu must prtect me.
mst beautiful