资源简介

(共21张PPT)
How are plants and animals connected with us
(Section B 3a—3c)
Unit 4 Amazing Plants and Animals
人教版（2024） 八年级上册
通过本节课学习，我能够：
1. 了解蓝鲸在海洋生态系统中的重要性，从而理解
动植物对于生态系统的重要性，保护动植物。
2. 学习理解文本结构和语言特点，尝试描述其他动
物的特征及其生态角色。
3. 归纳总结各种说明文的写作要点，提升英语写作
能力。
Learning objectives
Last class we learned something about frogs. It also plays an important part in our planet’s ecosystem.
Frogs help to protect farms by _______ ________.
eating
insects
Frogs can live on _______ and in _______.
land
water
Review
Lead-in
We have learned many amazing animals. This class we are going to learn another animal. It lives in the ocean.
Let’s watch a video. Then guess what it is
Blue whale.
Free talk
How much do you know about them
Where do they live
What do they eat
How many years can they live up to
……
Pre-writing
Read the text carefully and try
to complete the table.
①
①
②
②
③
③
④
④
④
Do you know 'Whale Fall'
Underline key sentences or circle out some key words.
⑤
蓝鲸的尸体在海底可以滋养海底生物长达百年，形成一个微型生态系统。
‘They give life even in death – a final gift to the ocean’
”即便生命已逝，它们仍能赋予海洋以生机——这是一种对海洋的终极馈赠。”
Do you know why they are so amazing
Let’s watch another video, and learn more about it.
While-writing
Billy
Name：
Imagine you are a blue whale called Billy. Please design an ID card to introduce yourself.
Imagine you are a blue whale called Billy. Use the first person to rewrite the first paragraph.
Complete your passage about the blue whale based on the text in 3a.
3c
写作
指导
文本体裁
话题分析
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。
人称时态
以第一人称为主；以一般现在时为主。
While-writing
some facts about the blue whale
food
place
number/facts
Checklist Standard
Handwriting clear and neat writing without painting
Language correct language using without grammar mistakes
Content fully introduce the blue whale with given information
Imagine you are a blue whale. Use the first person to rewrite the first paragraph.
Hello everyone! My name is Billy the Blue Whale. I am ___________
____________________________________________________I’m heavy, but I _______________________________________________
__________________________________________________________
I live in ___________________________________________________
____________________________________ I can eat ___________.
the largest
and heaviest animal on earth. I weigh as much as 200 tons.
love swimming, and many people like watching me
swim. They think it’s one of the most beautiful things to see.
all oceans except the Arctic Ocean. My favourite food is
tons of these a day
some of the tiniest animals in the ocean.
around four
3b
Checklist Self-evaluation Peer-evaluation Teacher-evaluation
Clear structure
Topic sentence
More relative information
Right linking words
Right grammar
Right spelling
Great Good Try harder
Now, you can exchange your writings with your partner to check each other’s writing.
Status Analysis(现状分析)：The blue whale is endangered and there are approximately 10,000 of them remaining.(蓝鲸濒危,现存约1万头)
The threats they face include sonar interference
(声呐干扰), ship collisions(船舶撞击) and plastic pollution(塑料污染), which seriously affect the survival of blue whales.
The Current Situation and Threats of Blue Whales
Task 5 Human Trouble List 人为麻烦清单
Question：Which human activities can harm blue whales
Answer：noise, plastic, over-fishing......
The group selects a question and writes an 1 English suggestion. Template:
“We should stop using too much plastic because…”
1. Blue whales can live up to 90 years.
live up to
Language points
① 达到；符合（期望等）
He always lives up to his parents’ expectations.
他总是不辜负父母的期望。
② 活到（某一年龄、岁数等）
An elephant can live up to sixty years.
一头象能活到60岁。
同义词 reach
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 to” 替换。
Some trees can reach a height of 30 meters.
有些树能长到 30 米高 。
Some people can reach 90 years old.
有些人能活到 90 岁 。
2. Blue whales live in all oceans except the Arctic Ocean.
except
① （介词）除……之外；除了 其后接名词、代词等作
宾语，表示某人或某物不包含在某一范围内。
The restaurant is open every day except Monday.
这个饭店除了星期一每天都营业。
②（连词）除了,只是；除非
My dress is similar to yours, except mine is blue.
我的连衣裙和你的相似，只是我的是蓝色的。
I won’t go except you come with me.
除非你跟我一起去，否则我不会去。
辨析：except, besides 与 but
They all went to the party except Ann. 除了安，他们都去了聚会。
We have a lot in common besides music. 除了音乐，我们还有很多共同点。
There is no one but me. 这里除了我没有别人。
except 除……之外；除了 强调所排除的内容不包含在内，含有“减去”的意思
besides 除……之外（还有） 包括 besides 后面的内容，含有“加上”的意思
but 除……之外 与 except 用法基本相同。常用于no, nothing, anything 之后
THANK

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