仁爱版九上英语Unit 2 Topic2 All these problems are very serious.课件.ppt

Unit 2 Saving the Earth,Topic2 All these problems are very serious.,Section A,sand sandstormdesertalthough = thoughreducecompletelychange into = turn intohuman being,沙沙暴沙漠；舍弃，遗弃虽然，尽管，即使减少，减轻彻底地，完整地转换成，变成人,sandstorms,come into being,n. 沙尘暴,形成，产生,many trees,cut down,There used to be many trees.,People have cut down too many trees.,forests gone,wash the earth away,The forests have gone.,Water has washed the earth away.,change into desert,A lot of rich land has changed into desert.,Sandstorms come into being.,come into being,The boy and girls are talking about .different types of sandstorms the reasons for sandstorms sandstorms in different cities,1b Listen to 1a and choose the best answer.,1C 树的作用,Trees can stop the wind from blowing the earth away. 树可以防风固土。

2. A lot of water can be saved by forests.森林可以贮存大量的水分3. Trees can also stop the water from washing the earth away. 树也能防止水土流失2 Complete the sentences with the correct forms of the given phrases in the box.,as a result, change into, do something, stopfrom, blowaway,1.People have cut down such a large number of trees that the land _desert. 2.There are fewer trees left, so the wind always _ the earth _. 3.Air pollution has become a serious problem, so we must _ to reduce it. 4.we should try our best to _ people _ cutting down the trees. 5.In the future, human beings can protect the trees well. _, animals will live a happy life in the forest.,has changed into,blows,away,do something,stop,from,As a result,The wind outside is blowing strongly.The wind is so strong!What bad weather!While I was walking down the street just now, I couldnt see anything.What causes these sandstorms?As a result, a lot of rich land has changed into desert.,外面的风刮得很厉害.风很大!多么糟糕的天气!刚才我在街上走的时候，我什么也看不见。

是什么引起这些风暴?结果，很多肥沃的土地变成了沙漠How can that affect the weather?Trees can stop the wind from blowing the earth away.A lot of water can be saved by forests.Trees can also stop the water from washing the earth away.Cutting down trees is harmful to human beings, animals and plants.Although we have built “ The Green Great Wall”, we still need to do something to protect the environment.,那怎样能影响天气？树可以防风固土森林可以贮存大量的水分树也能防止水土流失砍伐树木对人类、动物和植物有害尽管我们已经建起了“绿色长城”，但是我们仍需要采取措施保护环境blow stronglyWhat bad weather!as a resultchange into = turn intoaffect the weatherstop from doing. =prevent . from doingblow awaywash awaycan be savedhuman beingsprotect the environmentbuild- built-built,刮得厉害多么坏的天气！结果变成2影响天气阻止做 2把刮走把冲走可以被贮存人类保护环境build-过去式-过去分词,4 A. Listen to the passage and circle the phrases you hear.,become weakerdestroy the environmentdisappear rapidlyon the earthenough bamboo to eat,4 B. Listen again and fill in the blanks.,1. Now some kinds of animals are becoming _ _ _.2. Some animals are_ _ _dying out completely.3. In the past, pandas lived a quiet life and had _ _food.4. Humans have _ _ _ the importance of protecting animals.5. We should _ _ _to protect them.,do our best,in danger of,plenty of,come to understand,fewer and fewer,in dangerin danger ofdie outin danger of dying outplenty ofcome to understandthe importance of,在危险中处于的危险中灭绝处于灭绝的危险中许多，大量的开始理解，开始明白的重要性,a number of+名复+are 大量的是 the number of+名复+is 的数量是,somebody, someone, something, somewhere anybody, anyone, anything, anywhere nobody, no one, nothing, nowhere everybody, everyone, everything, everywhere,some-开头的，用于肯定句或表示请求建议的疑问句。

any-开头的，用于否定句和疑问句,no-开头的，表否定含义,every-开头的，可用于各种句式,不定代词和不定副词,1.I have _ to tell you.A. important something B. important anythingC. something important D. anything important,C,1、形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之后2.Everybody _ ready for the match. A. is B. are C. be D. were,A,2、不定代词作主语时，谓语动词要用单数不定代词和不定副词的用法,不定代词/不定副词+形容词,不定代词+动词单数,Stopping smoking can _ the risk of heart diseases. A. cause B. reduce C. protect D. create2. She made one big mistake(错误), and, _, lose her job. A. of course B. as well C. at least D. as a result3.What a bad sandstorm! It will blow the _ into our eyes.A. air B. sand C. water D. fire4. The number of workers in that factory _ over 200. A small number of them _ women workers. A. is; is B. are; are C. is ; are D.are; is5. It was so dark outside. I couldnt see _. A. something B. anything C. everything D. nothing6. I have _ to tell you.A. important something B. important anythingC. something important D. anything important,课堂检测,Humans have come to understand the _ (important) of protecting animals.Some animals are in danger of _(die) out _ (complete).A number of visitors _(be) from England every year. The number of visitors _(be) about 30 million._(cut) down trees _(be) harful to us.Trees can stop the wind from _(blow) the earth away.A lot of water can be _(save) by forests.The wind outside is blowing _(strong)!I couldnt see _(something) when I was waling on the street.We should do something _(protect) the environment. Nobody _(like) pollution.,importance,dying,completly,are,is,Cutting,is,blowing,saved,strongly,anything,to protect,likes,课堂检测,Lily, would you like _ to drink? Cindy is very busy now. She needs _ to。