Unit 7 What's the highest mountain in the world?Section B 1a~1d 课件 (共19张PPT)人教版八年级下册

(共19张PPT)
Unit 7
What's the highest mountain in the world
Section B (1a~1d)
Let's watch a video.
能说出并正确运用本课时的重点单词和短语：weigh, birth, adult, at birth, up to等。
1
2
能掌握含有倍数的比较级句式。
2
能通过听说活动，比较大熊猫和幼崽。
目标一:能掌握含有倍数的比较级句式
Activity 1
Look through 1a~1d, underline the new words and phrases,
read them with your partner and then let's check.
up to
at birth
adult
birth
weigh
1
2
3
4
5
centimeter
6
请点
我们哦！
Activity 2
How much do you know about elephants and pandas
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
Make conversation in pairs with the information above.
These expressions may help you
—How tall is the...
—How heavy is the.../How much does the...weigh
—How much does the ... eat a day
Compare facts about these two animals from height,
weight and food.
Activity 3
The elephant is taller than the panda.
The panda is shorter than the elephant.
The elephant is 200cm taller than the panda.
The panda is 200cm shorter than the panda.
350cm tall
150cm tall
Height
standing on two legs.
Weight
The elephant weighs more than the panda.
The panda weighs less than the elephant.
The elephant weighs many times more than the panda.
The panda weighs many times less than the elephant.
weighs 5,000 kilos
weighs 100 kilos
many times more than 意为“比…多很多倍”, time在此表示倍数。表示一倍用once，两倍用twice，三倍或三倍以上用“基数词+times”。例：
狗大约比猫重五倍。
A dog weighs about five times more than a cat.
eats 150 kilos
eats 10 kilos
Food
The elephant eats more than the panda.
The panda eats less than the elephant.
The elephant eats much more than the panda.
The panda eats much less than the elephant.
Practice
Compare facts about these two animals. Using the language in the box to help you make sentences.
Tiger
- is 130 cm tall
- weighs 300 kilos
- eat 40 kilos of meat a meal
Giraffe
- is 800 cm tall
- weighs 600 kilos
- eat 35 kilos of food a day
Example sentence:
This Giraffe weighs twice more than this tiger. (... cm taller/shorter, weigh much more/less, eat much more/less, eat many times more)
Languege points
倍数的表达方法
常见有三种句型：
1）A + 谓语动词 + 倍数 + as + adj + as + B 。
2）A + 谓语动词 + 倍数 + the + N. + of + B。
3）A + 谓语动词 + 倍数 + 比较级 + than + B 。
这只手表的价钱是那只表的五倍。
This watch is five times as dear as that one.
= This watch is five times the price of that one.
= This watch is five times dearer than that one.
目标二:能通过听说活动，比较大熊猫和幼崽
What's this
I'm a baby panda.
Activity 1
Does baby panda have any teeth
Can it see anything
How heavy is it
How long is it
How long can it live
Let's listen and find out the answers.
Guessing
Before listening
Activity 2
_____100 _____16 _____20 _____50
_____120 _____0.1 _____0.2 _____ 150
Can you read the numbers below
one hundred
sixteen
twenty
fifty
one hundred and twenty
zero point one
zero point two
one hundred and fifty
Listen and check (√) the numbers you hear.
1b
_____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
Teacher: Do you have any questions about baby pandas
Boy 1: Are they much smaller than an adult panda
Teacher: Yes. When they’re born, they only weigh about 0.1 to 0.2 kilos.
Boy 1: Wow, that’s small! I know an adult panda weighs many times
more than a baby.
Teacher: That’s right. And the adult pandas weigh about 100 kilos.
Boy 2: What about the size of a baby panda How small is it
Teacher: At birth, it’s only around 15 cm long, but an adult panda is
around 150 cm long.
Girl 1： Is a baby panda also black and white
Teacher: No, you would never guess! A baby panda is pink and it cannot
see. It also doesn’t have any teeth.
Girl 1： How long can pandas live
Teacher: They can live up to 20 to 30 years.
Check
Activity 3
Finish the chart below first, then take turns telling your classmates about pandas.
Pair work
Compare Adult pandas Baby pandas
color
eyesight(视力)
food
weight
height
black and white
pink
can see
can't see
bamboo
milk
100 kilos
0.1-0.2 kilos
150cm
15cm
An adult panda weighs many times more than a baby panda.
A baby panda cannot see.
No buying, no killing.
Let’s protect these endangered animals from now on !
These expressions may help you
—How tall is the...
—How heavy is the.../How much does the...weigh
—How much does the ... eat a day
(... cm taller/shorter, weigh much more/less, eat much more/less, eat many times more)
1.Talk about two animals that you like with your classmates.
2.Compare facts about these two animals.