初中英语仁爱科普版（2024）九年级上册Topic 3 What can we do to protect the environment?一等奖ppt课件

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Unit 2 Saving the earth Tpic 3 What can we d at hme t prtect the envirnment? Sectin D
Why are trees imprtant t us?
Hw imprtant are frests?
Learning Tasks
Read the passage Find ut the new wrds, key phrases and sentences.Hw d yu understand “Frests are the lungs f the earth”?What difficulties d tree planters face when they plant trees?Why d they plant different kinds f trees?
The earth needs its frests t remve carbn dixide frm the air and t make xygen.Many yung vlunteers arund the wrld are wrking in their hlidays t plant new trees t replace them.The weather may be very ht and dry r it may be very cld and wet.
If yu remve smething frm a place, yu take it away.If yu remve clthing, yu take it ff.
If yu replace smething that is brken, damaged, r lst, yu get a new ne t use instead.
If smething is dry, there is n water r misture /ˈmɔɪstʃə(r)  N-UNCOUNT 潮气;湿气;水分 / n it r in it.
There are ften many insects that bite these planters n their legs, arms, and faces while they wrk.
An insect is a small animal that has six legs. Mst insects have wings. Ants, flies, butterflies, and beetles are all insects.
If yu bite smething, yu use yur teeth t cut int it, fr example in rder t eat it r break it. If an animal r persn bites yu, they use their teeth t hurt r injure（伤害） yu.
Key phrases & sentences
In many cuntries, such as New Zealand, Canada, and Brazil, frests were cut dwn t prvide wd t build huses.Many yung vlunteers arund the wrld are wrking in their hlidays t plant new trees t replace them.These yung men and wmen face many difficulties when they plant new trees.Tree planters are changing the wrld.Even thugh tree planting is very difficult, they lve their wrk.They believe that in 50 years their little trees will becme beautiful frests.
Questins & Answers
Hw d yu understand “Frests are the lungs f the earth”?Frests can remve carbn dixide frm the air and make xygen. What difficulties d tree planters face when they plant trees?(1)The weather may be very ht and dry r it may be very cld and wet. (2)There are ften many insects that bite these planters n their legs, arms, and faces while they wrk. (3)They carry heavy bags f small trees, and wrking in the muntains can be dangerus. Why d they plant different kinds f trees?They plant different types f trees s thatbirds and animals can live in the frests.
Listen & Understand
Listen t the passage and check hw well yu understand it.
What will happen if we d nt plant new frests?Wuld yu like t be a tree planter when yu are lder? Why r why nt?
What will happen if we d nt plant new frests?
A Tree Planter?
Wuld yu like t be a tree planter when yu are lder? Why r why nt?
Finding the Greenest Persn
What have we learnt in this tpic?
( ) 1. Help thers whenever yu can _____ yu’ll make the wrld a nicer place t live in. A. r B. and C. but D. while( ) 2. Crss the rad carefully, ________ yu’ll keep yurself safe . A. s B. r C. but D. and ( ) 3. Hurry up, ________ yu’ll be late fr the cncert . A. r B. s C. but D. and ( ) 4. ---Tell us smething abut Canada, OK? --- I’m srry. ________ Jack _______ I have ever been there. A. Either, r B. Nt nly, but als C. Bth, and D. Neither, nr ( ) 5. I always enjy visiting Lndn, ______ I wuldn’t like t live there. A. because B. s C. but D. and
Wuld yu like t be a __________ persn? First, yu ught t _________ the electricity when yu leave a rm. __________ said than dne. Actin speak _________ than wrds. The train can _________ a tp speed f 431 km per hur.
What are the three R’s? Which means “make smething less r smaller”? What shuld we reduce? Which means “use it again”?What shuld we reuse?What shuld we d abut recycling?
Reduce, reuse and recycle.
We shuld reduce the things which peple can use nly nce.
We shuld reuse plastic bags.
We shuld cllect waste paper r sft drink cans, and srt them s that they can be recycled.
Right r Wrng
Thrw the rubbish here and there. Dn’t spit in a public place. Draw a beautiful picture n the public walls. Dn’t thrw things away if they can be reused. G t schl by bike instead f by bus. Cllect the rubbish and try t srt it.Pur dirty water int rivers directly.Turn ff the lights when yu g ut.
We learn: 1. Sme wrds: dry, remve, replace, insect, bite, planter 2. Sme phrases: prvide sth. t d sth. ; face difficulties; even thugh 3. Sme sentences: (1)Withut them, it cannt breathe. (2)They plant different types f trees s that birds and animals can live in the frests. We can: 1. Use the cmpund sentence crrectly. 2. Realize the imprtance f the frest.
Wrkbk: Unit 2 Tpic 3 Sectin DExercise bk: Write a shrt passage t encurage mre peple t plant mre trees. (the imprtance f trees, what shuld be dne, hw t d it, etc.)Optinal wrk: Make a MIND MAP f different kinds f pllutin.(cllect all the infrmatin f pllutin and srt it)
Water Pllutin
Sil Pllutin
Air Pllutin
Nise Pllutin
Reasn: Factries…
Light Pllutin
Effect: …
Hw t Slve: …