仁爱科普版（2024）九年级上册Unit 2 Saving the earth.Topic 1 Pollution has causes too many problems.精品ppt课件

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Unit 2 Saving the Earth Tpic 1 Pllutin has caused t many prblems. Sectin C
仁爱科普版 · 九年级上册
Speak ut the names f the pllutin.
air pllutin
light pllutin
water pllutin
sil pllutin
nise pllutin
Learning aims
Learn sme new wrds and phrases.Learn sme useful expressins.Knw abut nise pllutin.Learn t write a passage abut pllutin.
What d yu knw abut nise?
Nise is a srt/kind f pllutin.
It's harmful t peple's health. It makes us uncmfrtable and unpleasant.
What d yu think f nise?
What kinds f nise pllutin have yu met?
Let’s write dwn the things that can make nises.
Listen and write
Listen t the passage and circle the wrds in 1b.
1b Read 1a and match the wrds with their meanings.
1. prduce A. t hurt smene2. deaf B. a type r a kind3. print C. nt be able t hear4. harm D. t grw r make smething5. srt E. t put wrds r pictures nt paper using a machine
Read 1a and underline the tpic sentence.
Nise is als a kind f pllutin and is harmful t human’s health.
Give a prper title t this passage.
Nise Pllutin
Hw des nise harm peple’s health?
a. Peple ften ____ ______.b. Peple ften feel ____________ and __________.c. Peple may becme _____ r _____.d. Yur pint: _____________________________.
uncmfrtable
Has nise pllutin caused yu any prblems? If yes, share yur feelings with yur classmates.
Read 1a again and answer the questins.
3. Which phrase has the same meaning as “is harmful t”?4. Which sentence shws that many teenagers’ hearing in America is nt gd?5. Why is the hearing f many yung Americans nt gd?
“d harm t”.
Many teenagers in America can hear n better than 65-year-ld peple d.
Because they always listen t lud pp music.
Read 1a and find ut the key pints.
Peple wh wrk and live in nisy cnditins ften g deaf.
在嘈杂的环境中工作和生活的人容易变聋。
e.g. Beethven was deaf.
e.g. He _____ _____ because f the traffic accident.
went deaf
…many f the wrkers wh print newspapers and bks lse their hearing.
很多印刷报纸和书籍的工人丧失听力。
e.g. Lk! The man is printing smething.
lse ne’s hearing 丧失听力
a. Nt all peple knw nise is als a kind f pllutin. _____ ________ knw(s) nise is a kind f pllutin ____ ______.b. Many teenagers in America can hear n better than 65-year-ld peple d. In America, many teenagers’ hearing is ____ _____ ____ 65-year-ld peple’s.
Nt everyne
/Sme peple
as weak as
2 Cmplete the fllwing passage with the crrect frm f each wrd.
Nise is a kind f _________ (pllute). Cars and machines prduce t much nise. It makes peple feel ___________ (cmfrtable) and __________ (pleasant). It als des great ______ (harm) t peple’s _________ (hear). Nise is very ________ (harm) t human’s _______ (healthy).
Retell the passage.
NOISEPOLLUTION
What is nise pllutin?
Why is it a kind f pllutin?
Hw t deal with it?
Wh is it harmful t?
What des it cause?
3 Chse ne kind f pllutin and discuss it in grups. The fllwing questins may help yu.
1. What is … pllutin?2. What makes the … pllutin?3. What prblems des it cause?4. In what way is it harmful t peple’s life?5. What has been dne t slve these prblems?…
4 Write a shrt reprt abut a kind f pllutin based n 2 and 3. The tpic sentence f each paragraph is given belw.
… pllutin is…… pllutin is harmful t peple’s health…The gvernment has tried many ways t slve the prblem…
One pssible versin:
Air pllutin is becming mre and mre serius in tday’s wrld. Sme chemical factries prduce terrible gas and make the air bad. Buses and cars als prduce waste gas. In ur daily life, burning gas, il and cal als creates air pllutin. The air pllutin may cause a lt f prblems. It is harmful t peple’s health. It can cause breathing prblems, sre eyes and even cancer. It can als harm the plants, and the farmers will get less harvest. Luckily, the gvernment has tried many ways t slve the prblem, such as making laws t prevent the factry frm plluting the air.
单项选择( ) 1. —The little girl was brn____, and she can’t hear anything. —Oh, I’m srry t hear that. A. lazy B. blind C. deaf D. lvely( ) 2. — What happened? — There is a girl_____ n the street. She culdn’t find her mther. A. cry B. crying C. t cry D. cries( ) 3. The ______ by tried t climb up the tree, but he failed. A. 5-year-ld B. 5-years-ld C. 5 year ld D. 5 years ld
用所给单词的正确形式填空。1. They are ding their hmewrk carefully. Yu’d better nt ________(disturb) them.2. It is knwn that smking des great _______(harm) t us.3. They had all ______ (srt) f juice t drink at the party last night.4. Our gvernment has slved sme _____________ (envirnment) prblems. 改为同义句。1. The by had hearing lss when he was brn. The by _____ _____ _________ when he was brn.2. Sme students g t schl n Saturdays. ____ _____ students g t schl n Saturdays.
envirnmental
lst his hearing
1. Find ut the tpic sentence t understand the cntent f a paragraph.2. Write a passage accrding t the tpic sentences.
1. Sme wrds: deaf, print, hearing, lss, recently, disturb,srt, uncmfrtable, unpleasant, sentence, meaning2. Sme phrases: g deaf, lse ne’s hearing, hearing lss, n better than, d harm t3. Sme sentences: Hwever, nt all peple knw nise is als a kind f pllutin is harmful t human’s health.
1. Read 1a.2. Write a reprt accrding t Part 4.3. Finish Sectin C in yur wrkbk.4. List Grammar and Functins in this tpic. 5. Preview Sectin D.