(共41张PPT)
Unit8 Our Blue Planet
Grammar in use
（仁爱版 2024）七年级
下
0
2
Presentation
Practice
4
Consolidation
6
Summary
Assessment
Homework
1
3
5
7
Learning objectives
Lead in
By the end of the lesson, I will be able to...
1
2
3
correctly read and write large numbers and master the comma - separation rule;
understand and use the affirmative and negative forms of imperative sentences to give environmental protection instructions;
describe geographical phenomena through actual data to enhance scientific literacy.
Learning objectives
00
Lead in
01
Watch a video.
Lead in
01
Ocean Whiz Quiz.
How long is the body length of an average adult dolphin
A. 2 - 4 meters
B. 20 – 40 meters
Lead in
01
Ocean Whiz Quiz.
2.How many tentacles does a moon jellyfish usually have
A. About 4 - 5 tentacles
B. About 40 - 50 tentacles
Lead in
01
Ocean Whiz Quiz.
3.How far can a seahorse swim in about an hour
A. About 100 - 200 meters.
B. About 10 - 20 meters
Lead in
01
Ocean Whiz Quiz.
4. How deep can a sperm whale usually dive underwater
A. 100 - 200 meters.
B. 1000 - 2000 meters.
Look at the pictures and guess its name according to the descriptions.
Presentation
02
Activity 1 Look and guess.
Look at the pictures and guess its name according to the descriptions.
How big is it
Presentation
02
Activity 1 Look and guess.
Where is it
The ____________ is about
_____________square kilometers.
Qinghai Lake
4,600
four thousand six hundred
Look at the pictures and guess its name according to the descriptions.
How long is it
Presentation
02
Activity 1 Look and guess.
Where is it
The ________________ is about ________________ kilometers.
Changjiang River
6,300
six thousand three hundred
Look at the pictures and guess its name according to the descriptions.
How long is it
Presentation
02
Activity 1 Look and guess.
Where is it
The coastline of ______________ is about ________ kilometers long.
the Arctic Ocean
45,390
Forty-five thousand three hundred ninety
Look at the pictures and guess its name according to the descriptions.
How long is it
Presentation
02
Activity 1 Look and guess.
Where is it
The _____________covers more than
_____________ square kilometers.
Atlantic Ocean
93,000,000
ninety - three million
Activity 1 Look and read the sentences.
Pay attention to the numbers.
The Qinghai Lake
covers about 4,600 square kilometers.
The Changjiang River is about 6,300 kilometers.
The coastline of the Arctic Ocean is about 45,390 kilometers long.
The Atlantic Ocean covers more than 93,000,000 square kilometers.
Presentation
02
four thousand six hundred
six thousand three hundred
Forty-five thousand three hundred ninety
ninety - three million
Activity 1 Look and read the sentences.
Pay attention to the numbers.
Presentation
02
four thousand six hundred
six thousand three hundred
Forty-five thousand three hundred ninety
ninety - three million
We use a comma every 3 digits from the right when the number is greater than 999.
4,600
6,300
45,390
93,000,000
1, 425, 657, 565
Let’s learn!
Presentation
02
hundred
five hundred and sixty-five
thousand
six hundred
and fifty-seven thousand
million
four hundred and twenty-five million
billion
one billion
Activity 2 Read and complete the table.
4,186 four thousand, one hundred and eighty-six
45,390 forty-five _________, three __________ and ninety
6,363,000 six million, three hundred and sixty-three thousand
1,386,000,000 one billion, three hundred and eighty-six ____________
909,090,009,900 nine hundred and nine __________, ninety ____________, nine __________, nine hundred
thousand
hundred
million
billion
million
thousand
Presentation
02
1.Antarctica is about ________________________________________________
(14,200,000) square kilometers in size, and ice covers about 98 percent of the land.
2.The Sea of Marmara is about __________________________________
(11,350) square kilometers.
3.Oceans cover about_______________________________(360,000,000) square kilometers of the earth.
4.There are about _____________________________ (307,000,000) lakes in the world.
Activity 3 Complete the sentences.
fourteen million and two hundred thousand
eleven thousand, three hundred and fifty
three hundred and sixty million
three hundred and seven million
Presentation
02
Presentation
02
Play a game.
Read and say the numbers.
234
1,234
43,251
143,251
6,143,251
46,143,251
846,143,251
2,846,143,251
Xiao Ya is knocking on the door.
Presentation
02
Look at the picture and guess.
Presentation
02
Look at the picture. Guess what they are talking about.
What’s this
What does it say on the picture
It’s a poster about saving the ocean.
Read the conversation. Pay attention to the imperative sentences.
Come in, please
Oh, don’t put it here. Please put it on that big chair.
Miss Wang, here is the poster about saving the ocean. Can I put it on the table
Presentation
02
Activity 1 Pair work.
Activity 2 Complete the table and learn how to use imperative sentences.
Positive Negative
_______ every drop of water. Don’t _______ waste into the lakes.
_______ enough water. _______ waste water.
Save water, save our planet! No ___________ in that lake.
_______ your step! The floor is wet. Never _______ the water running.
Let’s ______ a poster about saving water. Let’s not _______ here!
Save
Drink
Mind
make
throw
Don’t
swimming
keep
speak
Presentation
02
建议
提醒
邀请
要求
命令
主语“You”通常被省略，一般以动词原形开头。
祈使句的概念:
1用于表达_________________________________等的句子。
2 主语__________________________________________。
3 可在句首或句末加上__________表示礼貌。
4 句末用______________，用__________来读。
Let’s learn!
Presentation
02
建议
提醒
邀请
要求
命令
“You”通常被省略，一般以动词原形开头。
Please
感叹号或者问号
降调
Presentation
02
Let’s learn!
肯定祈使句
(1) _______________________
(2) _______________________
(3)________________________
Positive
_______ every drop of water.
_______ enough water.
Save water, save our planet!
_______ your step! The floor is wet.
Let’s ______ a poster about saving water.
Save
Drink
Mind
make
Do型:动词原形开头
Be型:Be十名词
Let型:Let+宾语+动词原形
Be quiet.
Presentation
02
Let’s learn!
Negative
Don’t _______ waste into the lakes.
_______ waste water.
No ___________ in that lake.
Never _______ the water running.
Let’s not _______ here!
throw
Don’t
swimming
keep
speak
否定祈使句
(1) ____________________________
(2) ____________________________
Do型和Be型:句首加Don’t或never
No型: “No + 名词 / 动名词”
(3) ____________________________
Let型:Let十宾语十not十动原
Match the pictures with the words or phrases.
litter
take a shower
swim
turn off
collect
fish
Practice
03
Activity 3 Match the pictures.
Turn off the tap while brushing teeth.
Don’t litter around.
…
Practice
03
Make imperative sentences.
Activity 3 Match the pictures.
litter
take a shower
swim
turn off
collect
fish
Look and say.
Practice
03
No littering!
Keep off the grass!
Look and say.
Practice
03
Don't make a noise!
Wait in line!
Look and say.
Practice
03
Don't be late for class!
Keep the classroom clean!
以 “Our Blue Planet and Water Conservation” 为主题，制作一份简单的海报。
Production
04
Group work.
1, 425, 657, 565
hundred
thousand
million
billion
Do型:动词原形开头
Be型:Be十名词
Let型:Let+宾语+动词原形
1.至少三个用英语表达的数字信息。
2.至少五个祈使句。
否定句首加Don’t或never
No + 名词 / 动名词
Let十宾语十not十动原
Summary
05
The grammar we have learned
单项选择
( )1. 45,390 正确的读法是：
A. forty - five thousand, three hundred and ninety
B. forty - five hundreds, three hundreds and ninety
C. forty - five thousand, three and ninety
( )2.表示 “909,090,009,900” 中第二个 “9” 的数位的英文单词是：
A. billion B. million C. thousand
A
B
Summary
05
The grammar we have learned
单项选择
( )1.从括号内选择合适的单词完成句子：
____________ (Save/Collect) every drop of water.
A. Save B. Collect
( )2.选出与 “Don't waste water.” 意思相近的句子：
A. No wasting water. B. Save water. C. Let's not waste water.
A
C
Assessment
06
Self-assessment Marks
I can correctly read and write large numbers and master the comma - separation rule. 1 2 3 4 5
I can understand and use the affirmative and negative forms of imperative sentences to give environmental protection instructions. 1 2 3 4 5
I can describe geographical phenomena through actual data to enhance scientific literacy. 1 2 3 4 5
基础：抄写数字表达和祈使句的相关例句，背诵重点数字和祈使句。
Homework
07
提升：用英语描述自己家附近的地理事物，如河流长度、公园面积等，至少使用 5 个数字。
拓展：分组制作一份英语环保手抄报，包含数字信息和祈使句环保标语，在班级展示并介绍。
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