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1、Unit 2 Protecting our environmentWhile you read1 Group discussion.Question 1Some people say,“Trees are natural air conditioners.”Do you know why?Trees can clean the air.Trees can cool the air.Question 4What can we get from trees?What can we usually make from trees?Question 3What can they do when the
2、y join their roots together?They pass each other food and water.They warn each when insects attack them.2 Do we need more or fewer trees in Guangzhou?Talk in groups and tell your classmates why you think so.More?Fewer?Question 5Are trees in danger?People cut down trees.People burn forests.We are des
3、troying our best pollution fighters.3 Before you read the interview on page 18,try this quiz about trees.1.How long do they live?Match the items on the left with the average ages on the right.abcedmicetreestortoiseswhalespeopleiiiIiiivv70 years150 years40 years4,000 years3 yearsPollution？：making thi
4、ngs dirty and unhealthy.1.Which of pollution do trees help to fight?aair pollutionb water pollutioncnoise pollutiond all of the above2.Which of the following come from trees?anutsb beanscclothd oileteafrubber4 Before you read the interview,look at the title,the introduction and the pictures.Then say
5、 whether the following statements are T(True)or F(False).1.The“pollution fighters”are probably2.scientists.()3.2.Many useful things come from trees.()4.3.Trees give out harmful gases.()5.4.Trees can pass information to one another.()FTFT1 RITA We get some useful things from trees.Is that right?MAY_.
6、Two examples are _.2 RITA Trees do two main things to the air.Is that true?MAY_.They_.Yeswood and rubberYescool the air and clean it3 RITA One tree has the power of 15 air conditioners.Is that right?MAY _.One tree has the power of _.Nofive air conditioners4 RITA Do scientists know a lot about trees?
7、MAY _.They are _.5 RITA Can trees communicate with one another?MAY _.For example,if insects _ _.Noonly now beginning to understand themYesattack a tree,it can warn the other trees around it6 RITA Can trees help one another?MAY _.For example,they can _ _.7 RITA Every year,there are fewer and fewer tr
8、ees in the world.Is that true?MAY _.People _ every year.Yesjoin their roots underground,and pass each other food and waterYescut down and burn millionsExpressions1.be interested in.2.living things3.be useful for.4.on Emunicate with.6.one another7.in danger8.cut down对对感兴趣感兴趣生物生物对对有用处有用处在地球上在地球上与与交流交流
9、互相互相处于危险中处于危险中砍掉砍掉each other与one anothereach other 强调两者之间的“互相”，one another强调三个以上事物的“互相”。如：李明和陈平在学习上常常互相帮助。Li Ming and Chen Ping often help each other in study.我们的老师经常教导我们要互相学习。Our teacher often tells us to learn from one another.选择each other 或one another填空。1.Li Jie and Simon write to _ every month.2
10、.The football players passed the ball to _ to reach the final goal.each otherone another2.Are trees in danger?树木处在危险中吗？（树木处在危险中吗？（P18）in danger意为“处于危险中”，“in+表示状态 的名词”时，表示“处于状态 中”，在句子 中作状语。又如，in trouble“处于困难中”。根据中文意思完成句子。根据中文意思完成句子。1.由于环境污染由于环境污染,很多植物处在危险中。很多植物处在危险中。Many plants _ _ _ because of envir
11、onmental pollution.are in danger2 What can we do to protect our pollution fighters?Discuss with your classmates and write some suggestions.homework同步辅导U2 ReadingA P16-18页背诵readingA课文选择适当的短语填空，注意其适当形式。选择适当的短语填空，注意其适当形式。1.Sally _ Mickey Mouse.She likes collecting photos of him.2.A good dictionary _ En
12、glish learners.3.It is said that ants can _ one another by touching their feelers（触角）.is interested inis useful forcommunicate withcommunicate with,be interested in,be useful for根据中文意思完成句子。根据中文意思完成句子。1.这棵树枯萎了，所以我不得不把它砍掉。The tree died,so I had to _ it _.2.孩子们常相互开玩笑。The children often play jokes on _ _.3.地球上有数以百万计的生物。There are millions of _ _ _ _.4.当人们处于极度危险中时，通常会尖叫。People usually scream when they _ _ great _.cut downone another living things on Earth are in danger2.她知道自己处于危险中于是报警。她知道自己处于危险中于是报警。She knew she _ _ _,so she called the police.