资源简介

(共24张PPT)
Unit 4
Amazing Plants and Animals
Section B （3a-3c）
Learning objectives
Lead-in
What do you know about the blue whale
Is it big What makes it special
While-reading
Read the text and complete the table.
Pre-writing
3a
Blue whale facts Weight
Where they live
Food
How long they live
Role in ecosystem
While-reading
Read the text and complete the table.
Pre-writing
3a
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.
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
Pre-writing
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
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
2
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 _____________________________________________________________.
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.
3b
cool→
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 alively and healthy ecosystem. So I play
an important role in the ocean's ecosystem.Please protect me.
3c
Post-writing
Peer Review同伴互评
内容完整性（是否涵盖所有要点，事件描述是否详细）
结构合理性（开头、中间和结尾是否清晰，段落之间过渡是否自然）
语言准确性（语法错误、词汇拼写错误的数量）
语言丰富性（是否使用了多样化的词汇和句型）
情感表达（是否真实、真挚地表达了自己的感受）
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...
Langage points
1.Many people like watching blue whales swim, and they think it is one of the most beautiful things to see.许多人喜欢观赏蓝鲸游泳，他们认为这是最美丽的景象之一。
辨析:watch sb do sth与watch sb doing sth
watch sb do sth观看某人做某事,强调看到动作发生的全过程
watch sb doing sth观看某人正在做某事,强调看到动作正在进行
e.g. I watched him get into the room.我看到他进了那个房间。
e.g. He watched them eating.他看见他们正在吃东西。
Langage points
2.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
Langage points
except We are all here except/butTom.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)
Langage points
except We are all here except/butTom.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)
Langage points
3.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 nearlytwo months.
我们的暑假持续时间很长将近两个月。
Langage points
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。
Langage points
4. How long they live 它们的寿命
辨析:how long,how often, how soon 与how far
how long 多长时间;(物体)多长,用来询问时间的长短或物体的长度
how often 多久一次,用来提问动作发生的频率，常用表示频率的词或短语作答
how soon 多久以后,用来询问将来的时间，指时间还有多久，多提问“in +时间段”
how far 多远,用来询问距离，指路程的远近
Langage points
4. How long they live 它们的寿命
e.g. How long is the ruler 这把尺子有多长
e.g. —How often do you exercise 你多久锻炼一次
—Three times a week.一周三次。
e.g. —How soon will they come back 他们多久以后回来
—In two weeks.两周后。
e.g. —How far is it from here to the park
这儿离公园有多远
Exercises
(福建中考)
—— have you been a member of the Helpers’ Club
——For two years.
A. How soon B. How long C. How often
B
Exercises
解析
我们可用“问答一致法”解答此题。how soon“多久之后”,对“in+一段时间”提问;how long“(时间)多久,(物体)多长”,对时间段或物体长度提问;how often“多久一次”，对频率提问。由答语“For two years.(两年)”为时间段可知,应用 bow long 提问。
答案 B
Summary
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。
Homework
1.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;
2.修改作文并补充一个蓝鲸冷知识（用最高级表达）。
Thank you！

展开更多......

收起↑