《Keep our city clean》PPT(第二课时)
第一部分内容：Introduce
What makes the air dirty? ……makes……
What can we do to keep our city clean? We can ……
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Keep our city cleanPPT，第二部分内容：Expressions
What makes the air dirty？
什么使空气变脏?
“What makes”意思是“什么使···变得” 。
当特殊疑问词做主语成分时，后面的动词要加“s”或“es”。
eg：Who makes us laugh happily?
谁使我们笑得如此开心？
小练习 : There are some _____(sign) of our school.
What ______(make) our house clean?
What can you do _______(help) your friends?
Li Yang can_____(speak) English very quickly.
What can we do to keep our school clean?
我们可以做什么让我们的学校更干净？
情态动词 can意思是“可以,能够” ,表示一种能力。
它的用法是后面接动词原形。
否定形式是 cannot,可以缩写为can’t,意思为“不能,不可以”。
eg: We can take taxi to the cinema.
我们可以乘出租车去电影院。
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Keep our city cleanPPT，第三部分内容：Expand
二十四节气 The 24 Solar Terms
立春：spring begins
雨水：the rains
惊蛰：insects awaken
春分：vernal Equinox
清明：clear and bright
谷雨：grain rain
立夏：summer begins
小满：grain buds
芒种：grain in ear
夏至：summer solstice
小暑：slight heat
大暑：great hear
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Keep our city cleanPPT，第四部分内容：Exercise
( )1.Rubbish makes the park_______.
A. beautiful B. dirty C. clean
( )2.We_______put the rubbish on the floor.
A. can B. should C. can’t
( )3.We can plant more trees_______the air clean.
A. to keep B. keeps C. keep
( )4.Let’s move the box_______from the desk.
A. to B. away C. around
5.Can we keep our city clean?（改为陈述句）
We can keep our city clean.
6.It means “No swimming”.（改为同义句）
It means you shouldn’t swim here.
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Keep our city cleanPPT，第五部分内容：Homework
Make up a conversation.
Using:
What makes the air dirty? ···makes···
What can we do to keep our city clean? We can ···
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