初中英语人教版（2024）九年级全册Unit 13 We’re trying to save the earth!Section A教学ppt课件

这是一份初中英语人教版（2024）九年级全册Unit 13 We’re trying to save the earth!Section A教学ppt课件，共57页。PPT课件主要包含了Vocabulary，Lead-in， million等内容，欢迎下载使用。
1. catchcatch the train 赶火车catch up with赶上catch a cld 感冒练习：Cats like ________ mice.
2. bttmat the bttm f 在…的底部frm tp t bttm 完完全全，从头到脚bttm line 结果；概要；帐本底线n the bttm 在底部练习：He sat at the ________ f the stairs.
3. litterlitter指四处乱丢的东西和杂物garbage专指厨房中的残羹剩饭等必须清除的垃圾rubbish指残骸、废物等普通垃圾，特意集中起来以便清除waste指任何被丢弃的东西练习：Please dn't drp ________!
4. play partplay an active part in (ding)sth.积极参与 (做)某事play an imprtant part in (ding)sth.在(做)某事中发挥重要作用练习：Educatin can ________ a part in it.
5. 既指形式上的改变，也表示状态上本质的改变练习：Water ________int ice.
6. advantage反义词为 disadvantagetake advantage f利用be f advantage t 对有利have advantage ver 优于，胜过练习：What is the ________ f using nuclear pwer?
D yu knw what the atmsphere haze is?
D yu like it?
What ther kinds f pllutin d yu knw?
Here are sme wrds related t different kinds f pllutin. Write them in the bx belw. Then add mre wrds.
air pllutin
nise pulltin
water pllutin
Listen and cmplete the sentences.
really dirty
Rle-play the cnversatin. Then make yur wn cnversatins abut the kinds f pllutin in 1a.
Mark: The river was dirty. Even the bttm f the river was full f rubbish.Tny: But it used t be s clean!Mark: Yes, but peple are littering in the river.Tny: Everyne in this twn shuld play a part in cleaning it up!
Listen t the interview. Circle the kinds f pllutin that Jasn and Susan talk abut.
A. land pllutin B. air pllutinC. nise pllutin D. water pllutin
Listen again and cmplete the sentences.
1. The air is badly plluted because there are ___________ n the rad these days.2. Factries that burn cal als ________ the air with a lt f black smke.
3. There is als t much rubbish and waste. Peple _________________ things every day.4. Peple are als littering in ____________ like parks. This is turning beautiful places int ugly nes.
are thrwing away
public places
Use the infrmatin in 2a and 2b t rle-play cnversatins between Jasn and Susan.
The air has becme really plluted arund here. I’m getting very wrried.
Yes, I used t be able t see stars in the sky.
The prblem is that…
Rle-play the cnversatin.
Interviewer: Jasn and Susan, what are yur ideas fr slving these prblems?Jasn: Well, t cut dwn air pllutin, we shuld take the bus r subway instead f driving.Susan: Yeah, r ride a bike. There are ther advantages f bike riding. It’s gd fr health and it desn’t cst anything!
Interviewer: Great ideas! What abut waste pllutin?Susan: Mmm, I think simple things like bringing a bag t g shpping can help. I started ding that a year ag.Jasn: Me, t. Als, I never take wden chpsticks r plastic frks when I buy takeaway fd. I use the nes at hme.
Susan: And remember t thrw rubbish in the bins and keep public places clean and beautiful fr everyne.Interviewer: S tgether, ur actins can make a difference and lead t a better future!
Read and finish the task.
List the ways t cut dwn air pllutinList the ways t cut dwn waste pllutin
take the bus
take the subway
ride a bike
bring a bag t g shpping
never use wden chpsticks r plastic frks
thrw rubbish in the bins
Language pints
1．Even the bttm f the river was full f ... 甚至河底都堆满了…… bttm 名词，意为“底部；最下部”，由其构成的常用短语为 at the bttm f“在……的底部”。 e.g. He fell t the bttm f the stairs. 他摔到了楼梯底下。 The answer is at the bttm f the page. 答案就在这一页的下端。
2．Everyne in this twn shuld play a part in cleaning it up! 这个镇上的每个人都应该参与清理河流！ play a part in 意为“参与……；在……方面起作用”，相当于 play a rle in，后跟名词、代词或动词-ing 形式。 e.g. He didn’t play a part in the cmpetitin at all. 他根本就没参加这次比赛。 Did yu play a part in fighting？ 你参与打架了吗？
3. We shuld take the bus r subway instead f driving.
instead f 意为“代替，而不是”，后面常跟名词、代词或动词-ing形式。 instead f ding sth. 代替做某事
例句：她没有待在家里而是去上学了。 She went t schl instead f staying at hme.
4. Our actins can make a difference and lead t a better future!
make a difference 起作用；有影响
make a difference t ... 对……产生影响
注意：difference前面可加修饰语，如big, great等，表示受影响的程度。
5．There are ther advantages f bike riding. 骑自行车还有其他的优点。 advantage 名词，意为“优点；有利条件”。其反义词为 disadvantage “缺点；不利条件”。 e.g. This machine has many advantages. 这台机器有许多优点。 He has the advantage f a gd educatin. 他具有受过良好教育的优势。 Befre making yur decisin, yu shuld cnsider the advantages and disadvantages. 在做出决定之前，你应该权衡一下利弊。
6．Als, I never take wden chpsticks r plastic frks when I buy takeaway fd. 还有，当我买外卖食物时我从来不拿木筷或塑料叉。 （2）takeaway 可数名词，意为“外卖食物”，复数形式是 takeaways。 e.g. If yu can’t ck, takeaways are fine. 如果你不会做饭,（吃）外卖食物就很好。
take away 意为“拿走”，为“动词+副词”型短语，名词作宾语时，放在短语中间或后面均可；代词作宾语时只能放在短语中间。e.g. The fd smells terrible. Take it away. 这食物很难闻，把它拿走。
What d yu knw abut sharks?
Have yu ever heard abut shark fin sup?
The prcess f making shark fin is very cruel
Match the main ideas f each paragraph.
Talk abut shark fin sup. Sharks are endangered nw. Appeal t peple against eating shark fins.
Para. 3 Para. 1 Para. 2
Read Para 1 and make T fr true r F fr false.
( )1. Shark fin sup is famus and expensive all arund the wrld.( ) 2. Yu’re killing a whle shark when yu enjy a bwl f shark fin sup.
Retell the passage accrding t the wrds belw.
Sme peple like t eat shark’s fin sup, especially in __________ China. But getting the shark’s fin is very__________ .When peple catch sharks, they __________ ________ their fins and thrw the sharks back int the cean. The shark slwly dies because it can’t_________ withut a fin. And it is als __________t the envirnment. Sharks are at the _____f the fd chain. If the number f sharks drps t lw, it will break the balance (平衡）f the nature. Please say n t eating shark fin sup,and take actins t save the sharks!
cut ff
Read Para 2 and fill the blanks.
Over 90 percent
Read Paragraph 3 and answer the questins.
1. What are the tw envirnmental prtectin grups ding t prtect the sharks? And what have they dne? a. They are teaching the public abut “finning”. b. They have even asked gvernments t develp laws t stp the sale f shark fins.
2. Are shark fins gd fr health? Why?
N, they aren’t. Because n scientific studies have shwn that sharks are gd fr health.
Read the passage abut sharks and cmplete the fact sheet belw.
in suthern China
ver 90 percent
WildAid and the WWF
Read the passage again and fill in the blanks with the wrds in the bx.
1. Many peple d nt realize they are killing a whle shark _____ they enjy a bwl f shark fin sup.2. Sharks are at the tp f the fd chain, ______if their numbers drp, the cean's ecsystem will be in danger.
Many think that sharks are t strng t be endangered, _________ they are wrng. _________ there are n scientific studies t supprt this, a lt f peple believe that shark fins are gd fr health. 5. Sharks may disappear ne day ______ we d nt d smething t stp the sale f shark fins.
Grammar Fcus
现在进行时1、现在进行时用来表示现在正在进行的动作例:-What are the bys ding n the muntain? 这些男孩儿正在山上做什么?-They are planting trees.他们在植树2、表示现阶段正在进行的动作或持续的状态，这一动作不一定在说话人说话时发生例: This term he is trying t imprve his spken English.这学期，他正努力提高他的英语口语水平3、g，cme，leave，start，arrive 等动词用现在进行时表示即将发生的动作例: We are leaving tmrrw. 我们明天就要走了4、现在进行时与 always 连用表示赞扬、厌烦等语气例: Yu're always interrupting me!你总是打断我的话!(抱怨)5、get, becme, turn, run, g, begin, frget, die, finish 它们的现在进行时表示将来，有逐渐、越来越或快要的意味
二、现在完成时现在完成时由“have/has+及物动词的过去分词”构成。过去分词的构成分规则变化和不规则变化两种。规则变化的动词的过去分词和过去式的构成一样;不规则变化的动词的过去分词需特别记忆。1、表示过去发生的动作对现在造成的影响或结果，常用非延续性动词，如begin，give，g，meet see 等，但不能与 fr，since 引导的延续性的时间状语连用(在否定句中不受此限制)例:-Have yu had yur lunch yet? 你吃过午饭了吗?Yes, I have. I've just had it.是的，我刚刚吃过have already met these freign guests at the statin.我已经在车站见过这些外国客人了
2、表示从过去某时开始一直延续到现在的动作或状态。通常用延续性动词，如 be wrk， study live等，常与表示时间长度的状语连用，如fr tw days, since 1998,all day等。例: He has been away fr a lng time.他已经离开好长时间了I have kept the bk since last mnth.自从上个月我就借这本书了3、 have/has been t 和have/has gne t 的区别have/has been t曾经去过某地;have/has gne t去了某地(现在不在这里)指已经到达某地或在去某地的路上。例:-Have yu ever been t the Great Wall? 你去过长城吗?-Yes, I've been there twice.是的，我去过那儿两次Where are Daming and Lingling?大明和玲玲在哪儿?They have gne t the library.他们去图书馆了
4、一般过去时与现在完成时在时间状语上的区别般过去时可以和表示过去的时间状语连用,如yesterday, last mnth, three days ag，in 1990等;现在完成时不能与它们连用，但可以和不确定的含有“过去”之意的时间状语连用，如 befre, in the past few years, in recent years等例: Last year great changes tk place in the village去年，这个村子发生了巨大的变化。Great changes have taken place in my hmetwn in the past few years在过去的几年里，我的家乡发生了巨大的变化。
三、被动语态1、被动语态的构成被动语态的基本结构: be+及物动词的过去分词2、被动语态的用法(1)当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者时例: This kind f bk is sld in the bkstre near ur schl这种书在我们学校附近的书店出售。(2)有动作的执行者，但需要强调动作的承受者时例:English is spken by peple all ver the wrld.全世界的人都说英语(3)动作的执行者不是人时例:The tree was hit by a car.这棵树被车撞了(4)在上下文中，为了使句子间连接紧密时例: I have a new mtrbike. It was given t me as a birthday present by my father.我有辆新摩托车。它是父亲送给我作为生日礼物的.
(5)在新闻报道中，为了表明报道的客观性而避免主观性时例: A car accident happened n the highway this mrning. Three men were killed, the wunded were taken away t hspital at nce and plicemen were sent there t cpe with the event.今天早晨高速公路上发生了一起车祸，三人丧生，伤员马上被送往了医院，警察被立即派去处理这一事件。(6)在科技论文中，强调客观事实时例: When it is cld enugh, water will be turned int ice当天气足够冷时，水将变成冰(7)有些习惯用法常以被动语态形式出现例: We shuld be devted t what we d.我们应致力于我们所做的 (工作)。
3、不用被动语态的六种情况(1)不及物动词没有动作的承受者，不能用被动结构例:那儿发生了什么事?[正]What has happened ver there?[误]What has been happened ver there?(2) 连系动词 seem，be，becme，feel，taste，lk 等不能用于被动语态例:这种食物尝起来很可口。[正]The fd tastes delicius.[误]The fd is tasted delicius(3)宾语为动词不定式、动词-ing形式或从句，表示主语的一些想法、爱好或愿望时，一般不用被动语态例:I want t buy a cmputer. 我想买一台电脑。
(4)宾语是相互代词、反身代词、同源宾语等时，一般不用被动语态例:We shuld help each ther. 我们应该互相帮助。He thinks f himself t much.他过多地考虑自己We live a happy life here. 我们在这儿过着幸福的生活(5)宾语表示处所、地点时，一般不用被动语态例: He has gne t Lndn.他已经去了伦敦(6)谓语部分(动词与宾语)是一个不可分割的动词短语时，一般不用被动语态例: He saw the dctr yesterday evening.他昨天晚上看了医生
1.Yur father ________. Dn’t make t much sleepB.is sleeping C.was sleeping D.have slept2.Hurry up. The train ________ in twenty B.has left C.is leaving D.has been away3.Speak luder, please! I can’t hear yu. I ________ t a cncert in the music listenB.am listening C.listened D.was listening4.—Mm, I dn’t want t wear that cat tday.—But yur nse is ________, Lucy! Yu may catch a B.running C.shwing , we dn’t need t g back. I ________ ff all the B.will turn C.am turning D.have turned
6.I dn’t want t waste time， fr I ________that film B.have seenC.will seeD.was seeing7.I ________ almst all the pages f this bk, s I can return it in a B.will readC.have readD.was reading8.—Yur dress is s beautiful! When did yu buy it?—On my 12th birthday. I ________ it fr 3 B.have had C.have bught9.A lt f birds ________ in nature parks every B.are prtected C.will be prtected as we knw, mst f the rice ________ in the suth f ur B.is grwnC.was grwnD.has grwn
Fill in the blanks with the crrect frms f the verbs in brackets.
Je: _____ yu ever ______ (take) part in an envirnmental prject?Ken: Yes, I have. I ______ (help) with a Clean-Up Day last year. It was __________ (cnsider) the biggest clean-up prject this city ____ ever ____ (have).
Je: Hw many peple ____ (take) part?Ken: I _____ (think) mre than 1,000 peple ______ (cme) t help ut.Je: That’s fantastic! I guess everyne in this city is ______ (try) t imprve the envirnment.Ken: Yes, we can't affrd t ____ (wait) any lnger t take actin!
Fill in the blanks with the apprpriatemdal verbs frm the bx.
can wuld culd have t shuld must may/ might
Peple __________ think that big things______ be dne t save the earth. Many frget that saving the earth begins with small things. Fr example, yu ____ save
electricity by turning ff the lights when yu leave a rm. Yu ______ als use reusable bags instead f plastic bags. I think it's a great idea that yu nw ______ pay fr plastic bags in sme stres. And instead f driving t schl r wrk, yu __________ ride yur bike r walk. If it's far, yu __________ take the bus. All these
small things ______ add up and becme big things that _________ imprve the envirnment. Let's take actin nw!
Make a list f things that peple can d t help the envirnment and discuss yur list with yur partner.
use public transprtatin (n.交通运输);turn ff the lights when yu leave a rm;use reusable bags instead f plastic bags;ride yur bike r walk t schl r wrk;stp using paper napkinsrecycle bks and paper