初中英语仁爱科普版九年级上册Unit 2 Saving the earth.Topic 2 All these problems are very serious.课文配套课件ppt

这是一份初中英语仁爱科普版九年级上册Unit 2 Saving the earth.Topic 2 All these problems are very serious.课文配套课件ppt，共17页。PPT课件主要包含了水被森林贮存，cut down，单项选择题，Homework等内容，欢迎下载使用。

不定代词和不定副词有哪些？
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
( )1.This machine is very easy t use. _____ can learn t use it in a very shrt time. A.SmebdyB.AnybdyC.Everyne( )2.Mum came in with a serius lk,and I knew____was wrng. A.anything B.smething C.nthing( )3._____ everybdy likes watching TV in my family. My parents like ding utdr activities. A.NB.Nt C.Nne ( )4.—Is _____ ready fr the trip? —N, we haven’t gt a camera. A.nthing B.smethingC.anything( )5.Everything_______ changed. A.hasB.haveC.t have
What will ur wrld be like withut trees?
human beings
Number the pictures and then talk abut them in grups.
wash the earth away
change int desert
sandstrms cme int being
cut dwn trees
D yu knw hw sandstrms cme int being?
4 1 5 3 6 2
Listen t 1a, answer the questins.
What are they talking abut?
What causes this kind f bad weather?
They are talking abut sandstrms.
Peple have cut dwn t many trees. A lt f rich land has changed int desert.
1.The wind is blwing strngly … 2.cutting dwn trees is harmful t human beings. 3.change int 4.A lt f water can be saved by frests. 5. stp / prevent sb.(frm) ding sth. 6. wash away 7. Althugh …,we still need t wrk hard t prtect the envirnment.
wind风刮得猛用 strngly
动名词（组）作主语,谓语动词用单三. cut dwn砍倒
= turn int转变成
= keep sb.frm ding sth阻止某人做某事
althugh = thugh不能与but连用; “尽管，虽然”
Read 1a, answer the questin.
What are trees’ functins?
Trees can stp the wind frm blwing the earth away.
A lt f water can be saved by frests.
Trees can als prevent the water frm washing the earth away.
Prtecting and Saving Water Water is very imprtant t human beings, but nt everybdy knws hw t prtect and save it. Here are sme ways:
1. Pass laws against water pllutin.2. Stp factries puring waste water int rivers.3. Remember t turn the tap ff when yu leave.4. Cllect and reuse waste water. ...
turn ff关掉（水龙头、煤气、电器）
remember t d sth.记得要做某事remember ding sth.记得曾做了某事
Read and discuss different ways f prtecting and saving water.
Useful expressins
The wind is blwing strngly with lts f sand.Peple have cut dwn t many trees.A lt f rich land has changed int desert.And a lt f water can be saved by frests.They can als prevent the water frm washing the earth away.Stp factries frm puring waste water int rivers.
1.许多肥沃的土地已经变成了沙漠，留下的是遍地黄沙。 A lt f rich land has ___________desert,leaving nly sand.2.人们砍了很多树。Peple have_________many trees.3.这位警察阻止了这个男孩在街上踢足球。 This pliceman _____the by ______ _______ _________in the street.
changed int
stps frm playing ftball
1. The cleaner must keep the street____. A .frm getting dirty B.getting dirty C.t get dirty2.We must plant mre trees after we__every year. A.cut ff them B.cut them dwn C.cut dwn them3.The fld culdn’t stp the silder__twards the mst dangerus place. A.frm mving B.fr mving C.t mve4.There was a rainstrm yesterday. The fld __the ld brigde. A.washed away B.went away C.put away5.LiHng always helps thers__she is very busy. A.but B.because C.althugh
1.Write a shrt passage with the title “Prtecting and Saving Water”.写一篇题为“保护和节约水资源”的短文。2. 预习Sectin C.