Unit 7 What's the highest mountain in the world? Section B (1a~1d) 课件（32张PPT） 2023-2024学年人教版英语八年级下册

(共32张PPT)
Unit 7
What's the highest mountain in the world
Section B (1a~1d)
新课导入
Guessing game
Guess what animals they like best.
They are cute.
They are kind of shy.
They are black and white.
They like eating bamboo.
They are known as the national treasure of China.
pandas
They are big and heavy.
They brown or white.
They have large ears and ivory.
They have long noses.
They are Thailand's symbols.
elephants
2
1
能熟悉并正确运用本课时的重点单词和短语
能正确表达倍数和比较程度
3
能通过听说活动，了解大熊猫及其幼崽
预习检测
1. Cony's toys are ______ more than Susan's.
A.many time B.many times
C.much time D.more time
2. The world's population is growing ______ and there is less land and water for farming.
A.more B.much C.few D.larger
3. My pet dog feels like standing ______ his two legs.
A.in B.by C.on D.of
B
D
C
4. You are not a child but _____ adult.
A.a B.an
C./ D.the
5. _____ birth, Lily kept on crying.
A.On B.In
C.At D.Of
C
B
知识梳理
Language points
1.This elephant weighs many times more than this panda.
这只大象比这只大熊猫重很多倍。
weigh既可作及物动词，表“称重”，也可作连系动词，表“有……重”；
对重量提问时，常用句型有：“How much do / does / did + 主语 + weigh ”
或“How heavy be + 主语 ”。
其名词形式为weight。常用短语：in weight在体重方面。
e.g. I weighed the box. It weighs 20 kg. 我称了这个盒子，它重20公斤。
The boy weighs 20 kg.＝The boy is 20 kg in weight.这个男孩重20公斤。
2. At birth, a baby panda is about 0.1 to 0.2 kilos.
birth v. 出生 at birth 出生时
e.g. Man’s nature at birth is good.人之初，性本善。
give birth to… 生（孩子）；产生
e.g. My aunt gave birth to a beautiful baby girl yesterday.
昨天我婶婶生下一个漂亮的小女孩。
3. A panda can live up to 20 to 30 years.
up to 到达（某数量、程度等）；至多有；不多于。其中to为介词，
后接名词作宾语。
e.g. There are up to 2,000 students in our school.
我们学校有多达两千名学生。
The old man can live up to ninety years.
这位老人能活到九十岁。
【注意】：up to还可表示“（体力或智力上）能胜任；适于（做某事）”，
后可接名词或动词作宾语。常用于否定句。
重点探究
倍数和比较程度的表达
大象是现存世界最大的陆栖动物，主要外部特征为柔韧而肌肉发达的长鼻和扇大的耳朵，具缠卷的功能，是象自卫和取食的有力工具。象肩高约2米，体重3～7吨。非洲象耳大，体型较大，体重较重。亚洲象耳小，身体较小，体重较轻。
属于食肉目、熊科、大熊猫亚科和大熊猫属唯一的哺乳动物，头躯长1.2-1.8米，尾长10-12厘米。体重80-120千克，最重可达180千克，体色为黑白两色，它有着圆圆的脸颊，大大的黑眼圈，胖嘟嘟的身体，标志性的内八字的行走方式，也有解剖刀般锋利的爪子。
Group work
make conversation in pairs with the information above.
Elephant
is 350 cm tall
weighs 5,000 kilos
eats 150 kilos of food a day
Panda
is 150 cm tall
(standing on two legs)
weighs 100 kilos
eats 10 kilos of food a day
For example:
How tall is this elephant
This elephant is 350 cm tall.
How heavy is this panda
It weighs 100 kilos.
小组展示
1 组
2 组
3 组
4 组
pare facts about these two animals. Using the language in the box to help you make sentences.
Example sentence:
This elephant weighs many times more than this panda. (200 cm taller/shorter, weigh much more/less, eat much more/less, eat many times more)
A+ be/ v + （much/ a little.../倍数） +比较级+ than +B.
200 cm taller/shorter
This elephant is 200 cm
taller than this panda.
This panda is 200 cm
shorter than this elephant.
eat much more/less
This elephant eats much more than this panda.
This panda eats much less than this elephant.
This elephant eats many times more than this panda.
This panda eats many times less than this elephant.
eat many times more/less
Group work
以小组为单位，归纳倍数的表达方式，每组派一位代表发言。
小组展示
1 组
2 组
3 组
4 组
英语中“倍数”的表达方式：
①.表示 “A 比 B 长（宽、高、大、重等）N 倍”时，其结构为“A ＋ be ＋ 基数词（N＋1）＋times ＋ 形容词比较级 ＋ than ＋ B ”。
e.g. This hall is five times bigger than our classroom.
这个大厅比我们的教室大四倍。
He runs three times faster than his brother.
他跑得比他弟弟快三倍。
【注意】：“两倍”可用twice表示。
②.表示“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”，可用 “A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B”结构。
e.g. 这棵树是那棵树的三倍高。
This tree is three times as tall as that one.
他父亲的年纪有他两倍大。
His father is twice as old as he.
③表示“A的高度/重量/长度……是B的多少倍”。“A+谓语动词+倍数+the height / weight / length …+of + B ”
e.g. His father is twice the age of he.
他父亲的年纪有他两倍大。
This tree is three times the length of that one.
这棵树是那棵树的三倍高。
活动小结
通过以上活动，我们学习了倍数的三种表达方法：
表示“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”，可用：__________________________________________________________
表示“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”,可用：
—————————————————————————————
表示“A的高度/重量/长度……是B的多少倍”，可用：
—————————————————————————————
当堂检测见DCF课件
“A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B”
“A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B”
“A+谓语动词+倍数+the height / weight / length …+of + B”
重点探究
大熊猫和大熊猫幼崽的对比
an adult panda
a baby panda
Pre-listening
Can you compare a baby panda with an adult panda
Do you want to know more about them
While-listening
1b. Listen and check (√) the numbers you hear.
_____100 _____16 _____20 _____50
_____120 _____0.1 _____0.2 _____ 150
√
√
√
√
√
1c. Listen again and complete the sentences.
1. At birth, a baby panda is about _______ to ________ kilos.
2. At birth, a baby panda is about _______ cm long.
3. A baby panda is not black. It is _______ and it has no _______.
4. A panda can live up to ________ to ________ years.
0.1
0.2
15
pink
teeth
20
30
Post-listening
fill in the blanks.
Teacher:Do you have any questions about____________
Boy 1:Are they much　　　　than an adult panda
Teacher:Yes.When they’re　　　　,they only weigh about 0.1 to 0.2 _________.
Boy 1:Wow,that’s small!I know an________ panda weighs many times more than a　　　　.
Teacher:That’s right.And the adult pandas weigh around　　　　 kilos.
baby pandas
smaller
born
kilos
adult
baby
100
Boy 2:What about the size of a baby panda How small is it
Teacher:At _______,it’s only around 15 cm______,but an adult panda is around_______ cm long.
Girl:Is a baby panda also_______and_______
Teacher:No,you would never guess! A baby panda is pink and it cannot _______.It also doesn’t have any _________.
Girl:How long can pandas live
Teacher:They can _______ up to 20 to 30 years.
see
teeth
live
long
black
white
birth
150
Pair work
1d. Take turns telling your classmates about pandas.
A baby panda cannot see.
An adult panda weighs many times more than a baby panda.
活动小结
通过以上活动，我们知道：At birth, a baby panda is about 1._______to 2._______kilos and 3._______ cm long. A baby panda is not black. It is 4.________and it has no 5._______. A panda can live up to 6.________to 7._______years.
当堂检测见DCF课件
0.1
0.2
15
pink
teeth
20
30
当堂检测
完成句子。
1.她每天都称重,想减肥。
She _________ herself every day and wants to _________ __________.
2.他跑得比他弟弟快三倍。
He runs __________ ___________ _________than his brother.
3.出生时，这个婴儿非常虚弱。
　_________ __________ ， the baby was very weak.
4.成年大熊猫比熊猫宝宝重很多倍。
An adult panda _________ ________ ________more than a baby panda.
5.我们学校有多达两千名学生。
There are __________ _________ 2,000 students in our school.
weighs lose weight
three times faster
At birth
weighs many times
up to
课堂总结
Unit 7
Section B (1a~1d)
重点单词、短语：
__________________________________
__________________________________
__________________________________
weigh
birth
adult
at birth
many times
up to
kilos of
standing on two legs
倍数的三种表达方法：
表示“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”，可用：____________________________________________________________
表示“A 的长度（宽度，高度，大小，重量等）是 B 的 N 倍”,可用：
____________________________________________________________
表示“A的高度/重量/长度……是B的多少倍”，可用：
____________________________________________________________
“A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B”
“A ＋ be ＋ 基数词（N）＋times ＋ as ＋ 形容词原级 ＋ as ＋ B”
“A+谓语动词+倍数+the height / weight / length …+of + B ”