资源简介

(共18张PPT)
Unit 4
Amazing Plants and Animals
Section B (3a~3c)
能回顾并运用形容词最高级的构成及句型（如 “the + 最高级 + in/of + 范围”），结合蓝鲸相关信息完成写作；
01
能激发对海洋生物的兴趣，树立保护濒危动物的意识，体会用英语介绍自然生物的成就感。
02
学习目标
What do you know about the blue whale
Is it big What makes it special
Lead-in
Read the text and complete the table.
What’s the text mainly
talk about
It talks about the blue whale.
We can predict the main content of the article through the title and pictures.
Pre-writing
3a
The blue whale is the largest and heaviest animal on earth. It can weigh as much as 200 tons. Many people like watching blue whales swim, and they think it is one of the most beautiful things to see. Blue whales live in all oceans except the Arctic Ocean. They eat a lot, but they eat some of the tiniest animals in the ocean. A blue whale can eat around four tons of these a day.
Blue whales can live up to 90 years. When a blue whale dies at sea, it becomes food for many kinds of animals living in and around the sea. This food lasts for over a year and it helps to create a lively and healthy ecosystem. Blue whales play an important role in our world, so we must protect them.
/ n/ n. 大海；海洋
/ k sept/ prep. 除……之外；除了
tiny / ta ni/ adj. 极小的；微小的
lively / la vli/ adj. 精力充沛的；生机勃勃的
在地球上
多达，达到…… 之多
live up to 达到；符合
一个生机勃勃和健康的生态系统
扮演一个重要的角色
Pre-writing
Blue whale facts Weight
Where they live
Food
How long they live
Importance in nature
as much as 200 tons
all oceans except the Arctic Ocean
tiniest ocean animals
up to 90 years
food for other animals, create a lively and healthy ecosystem
Read the text and complete the table.
3a
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 love___________________________________________ ____ ___. I live in ________________________________________________
My favourite food is___________________________I can eat __________________________________________.
While-writing
3b
人称：第一人称叙事
时态：一般现在时为主
语言风格：生动活泼
文体：自身特性介绍，说明文。
可在事实基础上进行创意发挥
Hello everyone! My name is Billy the Blue Whale. I am _________________________________I’m heavy, but I love___________________________________________________
___. I live in ______________________________.
My favourite food is_________________________________I can eat ___________________________.
the largest and heaviest animal on earth.
swimming in the ocean. Many people like watching me swim,
and they think I am one of the most beautiful things to see
all oceans except the Arctic Ocean.
some of the tiniest animals in the ocean.
around four tons of them a day.
Complete your passage about the blue whale based on the text in 3a.
I can live up to 90 years. When I die, I become food for many kinds
of animals living in and around the sea, This food lasts for over a
year and it helps to create a lively and healthy ecosystem. So I play
an important role in the ocean's ecosystem.Please protect me.
3c
评价内容 评 价 标 准
框架结构(Structure) 能够详略得当地安排段落
具体内容(Content) 能够具体、清晰地用已知数据描述蓝鲸
语言表达(Language) 能够使用简明的、准确的、活泼的语言表达
书写质量(Handwriting) 书写规范、字母大小写、标点符号、涂改规范等
Exchange your post with your partner and finish the checklist.
Post-writing
Presentation and Sharing
I can live up to 90 years. When I die, I become food for many kinds of animals living in and around the sea...
1.Blue whales live in all oceans except the Arctic Ocean.蓝鲸生活在除北冰洋以外的所有海洋中。
辨析:except,except for,but与besides
except 除……之外(没有…)，着重强调在同类人或物中除去 一个或几个人或物,表示一种排除关系,有“减去”之意。
except for 除……之外，表示对整体主要部分的肯定和对局部的否定,起部分修正作用
but 除……之外，和except的用法基本相同,但着重强调整句的内容,习惯上用于no,nothing,anything等词之后
besides除……之外(还有…)，指在整体中加入一部分,表示一种累加关系,有“加上”之意
Language points
except We are all here except/but Tom.除汤姆之外,我们都在这里了。(不包括 Tom)
except for He is a good man except for his bad temper.
除了脾气有点儿差之外,他是一个好人。
but She could do nothing but cry.她除了哭什么都做不了。
besides Besides milk, we need vegetables.除了牛奶,我们还需要蔬菜。(也需要牛奶)
2.This food lasts for over a year and it helps to create a lively and healthy ecosystem.这些食物能维持一年多，有助于创造一个生机勃勃、健康的生态系统。
last
①【不及物动词】持续,延续，常与时间段连用。
How long will the bad weather last 这种坏天气会持续多久
Our summer vacation lasts long , for nearly two months.
我们的暑假持续时间很长将近两个月。
②【形容词】上一个的;刚过去的;最后的
last week上周
the last bus 末班公共汽车
③【副词】最后;上一次;最后一次
e.g. When did you last see him 你上一次见到他是什么时候
④【名词 &代词】最后的人或事物
e.g. He was the first to arrive and the last to leave.
他到得最早，离开得最晚。
Writing skill:
Use the first person to rewrite the second paragraph
(1) 人称: 由第三人称变成第一人称
(2) 语言: 个别句子需要变化结构
(3) 内容要点: 要点不能省略或者遗漏。
课堂总结
Homework
抄写本课时重点词汇和短语（每个 3 遍），并运用这些词汇和短语各造一个句子;
修改作文并补充一个蓝鲸冷知识（用最高级表达）。

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