仁爱科普版九年级上册Topic 2 All these problems are very serious.多媒体教学ppt课件

这是一份仁爱科普版九年级上册Topic 2 All these problems are very serious.多媒体教学ppt课件，共21页。PPT课件主要包含了Lead in，cut down，转换成变成，Exercises，Summary等内容，欢迎下载使用。

Language gals
By the end f the class, yu will be able t1.Master the fllwing wrds ,phrases and sentences:Wrds： sand, althugh Phrases: change int, human being Sentences：①As a result, a lt f rich land has changed int desert. ②Trees can stp the wind frm blwing the earth away.2. Knw hw sandstrms cme int being.
It’s a kind f strm caused by sand.
What kind f weather is it?
3 D yu knw hw sandstrms cme int being? Number the pictures and talk abut the sandstrm in grups.
wash the earth away
change int desert
sandstrms cme int being
cut dwn trees
many trees
Lng ag, there were lts f trees and frests. But peple needed sme wd t build huses and d ther things, s they cut dwn the trees day by day.
Frests have gne.
e.g. A lt f rich land has changed int desert because peple have cut dwn t many trees.
sandstrms
cme int being
The by and girls are talking abut ___________.different types f sandstrms the reasns fr sandstrms sandstrms in different cities
1b Listen t 1a and chse the best answer.
Listen and answer the questins
1.What’s the weather like tday ? It’s bad. The wind is s strng . And the sand really hurts causes these sandstrms ? Peple have cut dwn t many trees. As a result, a lt f rich land has changed int desert. 3.D we still need t d smething t prtect the envirnment ? Yes, we d. Althugh we have built “The Green Great Wall”, we still need t d smething t prtect the envirnment .
smebdy, smene, smething, smewhere anybdy, anyne, anything, anywhere nne, nbdy, nthing, nwhere everybdy, everyne, everything, everywhere
一般情况下用于否定句和疑问句
the indefinite prnun and adverb
1.I have ____ t tell yu.A. imprtant smethingB. smething imprtant
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.Everybdy ___ ready fr the match.A. is B. are
不定代词作主语时，谓语动词要用单数。
1c Read 1a and cmplete trees’ functins.
Trees can stp the wind frm blwing the earth away. A lt f water can be saved by frests. They can als stp the water frm washing the earth away.
Tree’s functins
K: wind; sand; anything M: sandstrms J: cut dwn; as a result; change int M: affect J: stp…frm…; blw… away K: can be saved J: wash … away K: is harmful t; althugh; d smething
Act ut the dialg in pairs
2 Cmplete the sentences
as a result, change int, d smething, stp…frm, blw…away
1.Peple have cut dwn such a large number f trees that the land ________________desert. 2.There are fewer trees left, s the wind always _______the earth ________. 3.Air pllutin has becme a serius prblem, s we must______________ t reduce it. 4.we shuld try ur best t _________ peple ________ cutting dwn the trees. 5.In the future, human beings can prtect the trees well. _____________, animals will live a happy life in the frest.
has changed int
As a result
4 A. Listen t the passage and circle the phrases yu hear.
becme weakerdestry the envirnmentdisappear rapidlyn the earthenugh bamb t eat
4 B. Listen again and fill in the blanks.
1. Nw sme kinds f animals are becming ______ ______ _______.2. Sme animals are_____ ______ ____dying ut cmpletely.3. In the past, pandas lived a quiet life and had ________ ______fd.4. Humans have _____ _____ __________ the imprtance f prtecting animals.5. We shuld ______ ______ ____t prtect them.
d ur best
in danger f
cme t understand
fewer and fewer
Lily, wuld yu like ___________ t drink? Cindy is very busy nw. She needs _______ t help her. Is there _________ wrng with yur cmputer?Jim lked fr his pencil-bx ____________ , but he didn’t find it. I stayed at hme last week. I didn’t g __________.
Use smene, smething, anything, smewhere, anywhere t fill in the blanks.
We learn: 1.Sme wrds: sand, althugh 2.Sme phrases: change int, human being 3.Sme sentences: (1)As a result, a lt f rich land has changed int desert. (2)Trees can stp the wind frm blwing the earth away. We can: 1. Use the indefinite prnun and adverb. 2.Talk abut the sandstrm and its harm.