Unit 2 Topic 2 Section A课件仁爱版英语九年级上册.pptx

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1、Unit 2 Saving the Earth Topic 2 All these problems are very serious.Section A,Language goals,By the end of the class, you will be able to1.Master the following words ,phrases and sentences:Words： sand, although Phrases: change into, human being Sentences：As a result, a lot of rich land has changed i

2、nto desert. Trees can stop the wind from blowing the earth away.2. Know how sandstorms come into being.,Lead in,Its a kind of storm caused by sand.,rainstorm,What kind of weather is it?,sandstorm,snowstorm,3 Do you know how sandstorms come into being? Number the pictures and talk about the sandstorm

3、 in groups.,( ),( ),( ),( ),( ),( ),4,1,5,3,6,2,wash the earth away,many trees,change into desert,forests gone,sandstorms come into being,cut down trees,many trees,cut down,Long ago, there were lots of trees and forests. But people needed some wood to build houses and do other things, so they cut do

4、wn the trees day by day.,forests gone,wash the earth away,Forests have gone.,change into desert,转换成，变成,沙漠,e.g. A lot of rich land has changed into desert because people have cut down too many trees.,sandstorms,come into being,The boy and girls are talking about _.different types of sandstorms the re

5、asons for sandstorms sandstorms in different cities,1b Listen to 1a and choose the best answer.,B,Listen and answer the questions,1.Whats the weather like today ? Its bad. The wind is so strong . And the sand really hurts face.2.What causes these sandstorms ? People have cut down too many trees. As

6、a result, a lot of rich land has changed into desert. 3.Do we still need to do something to protect the environment ? Yes, we do. Although we have built “The Green Great Wall”, we still need to do something to protect the environment .,somebody, someone, something, somewhere anybody, anyone, anythin

7、g, anywhere none, nobody, nothing, nowhere everybody, everyone, everything, everywhere,一般情况下用于肯定句,一般情况下用于否定句和疑问句,表否定含义,可用于各种句式,the indefinite pronoun and adverb,1.I have _ to tell you.A. important somethingB. something important,B,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,Do you know?,2.Everybody _ ready for t

8、he match.A. is B. are,A,不定代词作主语时，谓语动词要用单数。,1c Read 1a and complete trees functions.,Trees can stop the wind from blowing the earth away. A lot of water can be saved by forests. They can also stop the water from washing the earth away.,Trees functions,K: wind; sand; anything M: sandstorms J: cut down

9、; as a result; change into M: affect J: stopfrom; blow away K: can be saved J: wash away K: is harmful to; although; do something,Act out the dialog in pairs,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.

10、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

11、 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,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 a

12、gain 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,pl

13、enty of,come to understand,fewer and fewer,Lily, would you like _ to drink? Cindy is very busy now. She needs _ to help her. Is there _ wrong with your computer?Jim looked for his pencil-box _ , but he didnt find it. I stayed at home last week. I didnt go _.,Use someone, something, anything, somewhere, anywhere to fill in the blanks.,something,someone,anything,somewhere,anywhere,Exercises,Homework,Memorize the useful expressions and key sentences which we learn today.2. Preview Unit 2 Topic 2-Section B.,Bye-bye!,