資源簡介

Unit 8 Our Blue Planet
Grammar in Use教案
一、教學內容分析
本課時所學習語法分為兩部分，包括千位數以上基數詞和祈使句兩個部分。千位數以上基數詞部分，通過補全信息和閱讀句子的活動，在語篇中感知千位數以上基數詞的表達形式。然后，借助翻譯訓練、補全句子等活動，理解和體會千位數以上基數詞的讀法。最后，在特定的語境中引導學生正確使用千位數以上基數詞。祈使句部分，通過對話感知祈使句的肯定句與否定句的表達形式。然后，觀察、歸納祈使句的形式、意義，并完成相關表格。要求學生在語境中體會、理解祈使句用于表達命令、請求、勸告、警告、禁止等語氣的表意功能。最后，開展遷移創新活動。
二、學情分析
通過以往的學習，學生已經能夠表達0-999的數字，但對于較大數字如百萬、十億級別的數字，數字位數多且英文表達復雜，學生在認讀和書寫上可能存在困難，尤其是對英文中數字每隔三位用逗號隔開及相應的讀法規則，需要建立一定的腳手架并配上練習來鞏固。通過前幾課的學習，學生有稍微涉及接觸到一些祈使句的表達，但對于祈使句的含義、其肯定和否定形式的區分及準確運用，學生還不了解，需要配合練習詳細講解。
三、教學目標
通過本節課的學習，學生能夠： 在語篇中感知千位數以上基數詞的形式、意義和用法； 觀察、歸納祈使句肯定句和否定句的形式、意義和用法，體會、理解祈使句的語氣； 初步具有運用千位數以上基數詞和祈使句的能力，運用所學語法知識，描述節水行動。
四、教學重難點
【重點】 在語篇中感知千位數以上基數詞的形式、意義和用法； 觀察、歸納祈使句肯定句和否定句的形式、意義和用法，體會、理解祈使句的語氣。 【難點】 初步具有運用千位數以上基數詞和祈使句的能力，運用所學語法知識，描述節水行動。
五、教學活動設計
環節一：話題導入，激活已知。（5 mins） 教師展示圖片，讓學生回答有關海洋的問題。
教學活動 活動層次 效果評價
Students look at the picture and answer the question. Students look at the pictures and fill in the blanks. 學習理解之感知與注意 觀察學生的作答表現，評價其融入課堂的情況。
環節設計意圖：通過真實數據激發興趣，引入大數字的學習。
環節二：在語境中學習千位數以上基數詞的用法。（12 mins） 教師引導學生在語境中，學習歸納千位數以上基數詞的用法。
教學活動 活動層次 效果評價
Students read the sentences and pay attention to the numbers. Students review the numbers. Students think about how they express the numbers in English. Students read the numbers and complete the table. 學習理解之獲取與梳理 應用實踐之內化與運用、分析與判斷 觀察學生的表現,了解其是否掌握千位數以上基數詞的用法。
環節設計意圖: 在語境中呈現千位數以上基數詞的寫法，幫助學生進一步了解世界水景知識，并掌握該語法形式。通過討論，引導學生自主發現并總結千位數以上基數詞的用法。
環節三：通過練習，鞏固千位數以上基數詞的用法（5 mins） 學生完成相關練習，幫助學生鞏固千位數以上基數詞的寫法和讀法。
教學活動 活動層次 效果評價
Students complete the sentences with the numbers in the brackets. 應用實踐之內化與運用 觀察學生完成句子的情況，判斷其是否能理解該語法的形式和意義并在語境中正確使用。
環節設計意圖: 學生通過完成句子的練習活動，鞏固千位數以上基數詞的寫法和讀法，在語境中準確表達該類基數詞。
環節四：在語境中學習祈使句的用法。（13 mins） 教師引導學生在語境中梳理總結祈使句的語法規則。
教學活動 活動層次 效果評價
Students observe the picture and guess what they are talking about. Students read the conversation and pay attention to the sentences in bold. Students read the sentences and complete the table. Students observe the sentences and fill in the chart. 學習理解之感知與注意，獲取與梳理 觀察學生的活動表現，了解其對祈使句的內化情況，及時給予鼓勵和指導。
環節設計意圖: 通過朗讀、觀察、討論、分析，引起學生的興趣，激活學生的思維。通過表格理解和運用祈使句肯定句和否定句，幫助學生正確使用祈使句來表達意義。
環節五：通過練習，鞏固祈使句的用法。（10 mins） 教師引導學生完成相應的練習，并通過造句的形式鞏固祈使句的用法。
教學活動 活動層次 效果評價
Students match the pictures with the words or phrases. 13. Students make imperative sentences based on the pictures and expressions. 14. Students work in groups to talk about how to save water by using imperative sentences. Then they write them down. 應用實踐之內化與運用 遷移創新之想象與創造 觀察學生學習活動的表現，評價學生綜合運用所學語法知識的情況。
環節設計意圖: 在真實語境中，引導學生正確使用祈使句談論節水措施，幫助學生準確、恰當、得體地使用祈使句肯定句與否定句的語言形式，引導學生發展英語語法意識和能力。
作業與拓展 Read the number in Activity 2 on page 28. Make a poster. Write at least 5 imperative sentences about protecting the environment in English.
4 / 4(共22張PPT)
Our Blue Planet
Unit 8
Grammar in Use
英語仁愛版七年級下冊
重點
重點
通過本課時學習，學生能夠：
1. 在語篇中感知千位數以上基數詞的形式、意義和用法；
2. 觀察、歸納祈使句肯定句和否定句的形式、意義和用法，
體會、理解祈使句的語氣；
3. 初步具有運用千位數以上基數詞和祈使句的能力，運用
所學語法知識，描述節水行動。
Learning objectives
How many oceans are there in the world What are they
Look and answer
Look and fill
Look at the pictures and fill in the blanks.
1. The coastline of ________________
is about 45,390 kilometers long.
the Arctic Ocean
n. 海岸線；沿海地帶
/ k stla n/
2. _________________ covers more than 93,000,000 square kilometers.
The Atlantic Ocean
v. 覆蓋；遮蓋
/ k v (r)/
3. _________________ is about 4,600 square kilometers.
The Qinghai Lake
4. ____________________ is about 6,300 kilometers.
The Changjiang River
Read and learn
Read the following sentences and 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.
We use a comma every 3 digits from the right when the number
is greater than 999.
Let’s review
Review the following numbers.
100
101
185
315
999
nine hundred and ninety-nine
one hundred
one hundred and one
one hundred and eighty-five
three hundred and fifteen
一千 1,000
一百萬 1,000,000
十億 1,000,000,000
one thousand
one million
one billion
拓展
Think and say
1. The Qinghai Lake covers about 4,600 square kilometers.
2. The Changjiang River is about 6,300 kilometers.
3. The coastline of the Arctic Ocean is about 45,390 kilometers long.
4. The Atlantic Ocean covers more than 93,000,000 square kilometers.
four thousand and six hundred
six thousand and three hundred
forty-five thousand, three hundred and ninety
ninety-three million
How can we express the following numbers in English
Read the numbers 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
Read and complete
第一個逗號“,”前為thousand
第二個逗號“,”前為million
第三個逗號“,”前為billion
Antarctica is about ____________________________________ (14,200,000) square kilometers in size, and ice covers about 98 percent of the land.
The Sea of Marmara is about __________________________________ (11,350) square kilometers.
Oceans cover about ___________________________ (360,000,000) square kilometers of the earth.
There are about ____________________________ (307,000,000) lakes in
the world.
fourteen million and two hundred thousand
eleven thousand, three hundred and fifty
three hundred and sixty million
three hundred and seven million
Complete the sentences with the numbers in the brackets.
Read and complete
Observe the picture and guess what they are talking about.
Observe and guess
(Xiao Ya is knocking on the door.)
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 this table
Read the conversation and pay attention to the sentences in bold.
Read and answer
What kind of sentences are they
Imperative sentences.
Read the sentences and complete the table.
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
Read and complete
Imperative sentences are often used to express the speaker’s advice, instructions, requests, or commands.
Positive Negative
Save every drop of water. Don’t throw waste into the lakes.
Drink enough water. Don’t waste water.
Save water, save our planet! No swimming in that lake.
Mind your step! The floor is wet. Never keep the water running.
Let’s make a poster about saving water. Let’s not speak here!
Observe and fill
肯定形式 否定形式
Do 形 1. __________ +賓語+其他. 2. ____________ +動詞原形+賓語
+其他.
動詞原形
Don’t/Never
Positive Negative
Save every drop of water. Don’t throw waste into the lakes.
Drink enough water. Don’t waste water.
Save water, save our planet! No swimming in that lake.
Mind your step! The floor is wet. Never keep the water running.
Let’s make a poster about saving water. Let’s not speak here!
Observe and fill
肯定形式 否定形式
Let 形 3. _____ +賓語+動詞原形 +其他. 4. Let+賓語+ _____ +動詞原形+其他.
5. Don’t+let+賓語+動詞原形+其他.
Let
not
Positive Negative
Save every drop of water. Don’t throw waste into the lakes.
Drink enough water. Don’t waste water.
Save water, save our planet! No swimming in that lake.
Mind your step! The floor is wet. Never keep the water running.
Let’s make a poster about saving water. Let’s not speak here!
Observe and fill
肯定形式 否定形式
No 形 6. No + _____________.
(表示禁止，常用于公共場合的標語)
名詞/動名詞
litter
take a shower
swim
turn off
collect
fish
Match the pictures with the words or phrases.
Look and match
Make sentences
Make imperative sentences based on the pictures and expressions.
1. Turn off the tap while brushing teeth.
2. Don’t litter around.
3. Take a quick shower.
4. No swimming. / Don’t swim in the river.
5. Collect rainwater.
6. No fishing. / Don’t fish here.
litter
take a shower
swim
turn off
collect
fish
Work in groups to talk about how to save water by using imperative sentences. Then write them down.
Talk and write
1. ___________________________________________
2. ___________________________________________
3. ___________________________________________
4. ___________________________________________
Summary
build up the awareness of saving water.
know the rules of reading and writing the numbers and use the imperative sentences.
2
1
After learning this lesson, I can
1. A: Let's go and see the monkeys. They' re my favourite animals. B: Why do you like them
A: Because they' re clever and funny.
2. A: Oh, look! A baby wolf and its mother! Do you like wolves B: No, I don't. They' re very dang
Homework
1. Read the number in Activity 2 on page 28.
2. Make a poster. Write at least 5 imperative sentences about protecting the environment in English.
Bye-bye!

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