2025年人教版九年级英语第十三单元核心要点梳理与复习攻略

人教版九年级英语第十三单元知识点总结Unitl

3.We7e tryingto savethe manatees!一.单词litter bottomfisherman coalugly advantagecost woodenplastic takeawaybin sharkfin cruelharmfulbe harmful to rtthe topof chain the foodchain ecosystemindustry lawscientific takepart irafford turnoffreusable payfor takeaction transportationrecycle napkinthrow awayput sthto gooduse pull・・・down upsidegate bottlepresident inspirationiron workmetal bringback creativity二..目前进行时1定义表达说话时（瞬间）正在进行的动作，也表达目前或现阶段一直进行的动作构造:

①肯定句主语+am/is/are+V-ing

②否认句主语+am/is/are+not+V-ing

③疑问句主语+Am/ls/Are+V-ing使用方法）表达说话时正在进行的，目前正在发生的动作1

①Look!The bigbird isflying away.

②He iswatching amovie now.）表达目前一段时间内正在进行，但说话时也许没有进行的动作2我目前正通过远程教育学习汉语Right nowI amstudying Chineseby distancelearning.））常带有表达目前时刻的时间副词,如:（）12now,right now,at thevery moment,for thetime及being,at present,these daysLook!Listen!...）与等副词连用,表达动作反复或习惯此时句子常具有3always,constantly,forever,all thetime说话者的强烈情感在内体现较强的“责怪”或“表扬”之意你总是主意不定（太烦人了）

①You arealways changingyour mind..他总是协助他人（他真是个好人）

②He isalways helpingothers）对于等表达位置移动的动词常可用进行时态表未来4come,go,leave,arrive,start,fly,drive

①He isleaving onWednesday.

②Mary isnthere at the moment.She iscoming later.见第四单元及使用方法

2.used to do use被动语态见第五单元

3.

16.turn---into---（使）变成Joan isturning intoquite askilled musician.译成Please turnthis intoEnglish.（…）表达（对）产生影响或作用

17.make adifference toThe newteacher alwaysencourageslittle Tom.This hasmade abig differenceto him.意思是“不再”

18.no longer有两个短语和同义，即和但他们侧重的方面不一样no longernot…any longernot…any more,和侧重时间no longernot…any longere.g.He nolonger liveshere.=He doesntlive hereany longer.他不在这儿居住了（一种时间此前他住在这儿，过了这个时间，他就离开了）侧重侧重程度和数量not…any more=no moreYou can drinkno more.=Youcant drinkany more.你不能再喝了（喝酒的量到了一定程度，不能再继续下去了）

20.The numberof...…a numberof当表达数值的高或低时，要用或修饰number highlow在那In thatcountry,the numberof childrengoing toschool ishigher incities thanin townsand village.个国家，都市小朋友入学人数比乡镇及农村要高常与搭配的动词有等number grow,fallThe numberof familiesthat owncars has been growingquickly recently.近来拥有轿车的家庭数量增长很快好好运用

21.put sth.to gooduse

22.build/make...out of用.......建造/制造.他用木头造了个模型船He builta modelship outof wood

23.The topof thehouse isan oldboat turned upside down.意为“被翻转过来的；被颠倒过来的”，做后置定语修饰turnedupsidedown boat和

24.be madeof bemade from

26.bring sb/sth backto life

1.

1.Rethink,Reuse,Recycle!是最常用的前缀之一.表达如下三方面的意义re-re）表达“回”或“向后”的意思（回来）（回忆，召回）（缩回，取回）1return recallretract）表达“再”、“重新”、“反复”的意思（再思索）（再运用）（重新2rethink reuserestart开始）（再运用）recycle）表达“相反”、“反对”的意思（反叛，谋反）（反转，颠倒）（对抗，3rebel reverseresist抵御）

29.-ive是形容词后缀一般表达有.......的create+-ive=creative形容词加变副词

30.recent+-ly=recently ly（灵感）

31.Amy isan inspiration n.to usall.后缀附在动词背面构成名词.tion1）当单词最终是t,d,te,de时,变名词加tion或者ation,ition；）当单词最终是元音字母时，变名词加等2sion砍彳到，减少

32.cut downThe littleboy cut down theyoung treewith anaxeThe doctortold meto cutdown smokingand drinking.切碎cut up切断，停止cut off

33.especially befull ofnoise/air/water pollutionthrow...into...Cause the problem writeto sbclean upusedto dotoo much/too many/much tooclose downplay apart incutdowninstead of+doing makeadifference aroundhere=near herelead toidea fordoing sth交通工具起作用Solve the problems takethe+help/work rememberto do/doinghear of/about/from be harmful tothe foodchain thewhole+n=all+n bein danger=be endangeredfall（是增长了多少是增长至多少）by over90percent increaseby increaseto inthe last20years beginwithsth addup stopto do/doing takeaction pull^-down setup way to do sth它过去是那么洁净

34.我们镇上的每个人都应当尽一份力把这条河清理洁净这附近的空气被严重污染了为了减少空气污染，我们应当乘公汽或地铁，而不要开车它不花费任何东西但实际上，每年大概七千万条鲨鱼被抓来用作商业交易有些种类的鲨鱼数量在过去的二三十年里，下降了百分之九十以上到目前为止，没有科学研窕证明显示鱼翅对健康有益，所认为何要吃呢？回收再运用纸很轻易不过停止开小汽车是很难的我们不该用餐巾纸当你离开房间时关掉灯你曾经考虑过怎样能充足运用这些东西吗？艾米并不是唯一善于回收运用的人她做这事已经有好几年了艺术不仅能带给他人快乐，并且也阐明了只需要一点发明力，虽然是冰凉、坚硬的铁也可以产生活力Write aletter tothe citymajor aboutthe problemand yoursuggestions.In yourletter,describe theenvironmental problemsin yourtown/city.

①What aretheproblems@Where arethey

③What orwho iscausing theseproblemsThen,give suggestionsor possibleways tosolve theproblems.I thinkthat---We should/could---I suggest---Dear Sir/Madam,Environmental problemsare becomingmore and more seriousall over the world.With thedevelopmentof thesociety,there aretoo manycars on the streetsin ourcity.Cars havemade theairunhealthy forpeople tobreathe.Black smokeand poisonousgas aregiven offby factories.Factoriesalso putwaste intothe river.And whereverwe go,we canfind rubbish.Now moreandmorepeople haverealized theseproblems.I thinkthat governmentsshould closedownthe factoriesand developlaws tostop peoplefrom drivingcars everyday.I suggesteveryone inthistown shouldhelp toclean upthe riverand the streets.We shouldcall oneveryone inthe towntothrow rubbishinthedustbins.I hopetheproblemwill besolved inthe nearfuture andour homewill becomebetter andbetter.注意接双宾语的词的被动语态；的被动语态；make/let/have sbdo see/hear/notice/find/observesb do的被动语态；tssaid/reported/believed/supposed/well-known；及无被动语态的三种状况（感官动词、不及物动词、等）sell/write目前完毕时

4.使用方法

①过去发生的动作对目前导致的影响或成果强调成果Yesterday Ifinished myhomework,thats tosay,I havefinished myhomework now.

②过去已经开始一直持续到目前的动作或状态强调继续I havelived heresince

1990.目前完毕时的构成过去分词have/has+目前完毕时的四个基本句型肯定句一般疑问句He hasfinished the work.Has hefinished thework否认句两回答He hasnot finished thework.Yes,hehas.No,he hasnt.特殊疑问句What has he done在下列情形下用目前完毕时九词语1已经肯定句中或句尾©already I have alreadyfound mypen.=I havefound mypen already.已经否认句和疑问句句尾

②yet I have notfinished thework yet.Have youbought acomputer yet曾经句中

③ever Have you everseen pandas从不句中©never I have neverbeen toBeijing.冈冈句中

⑤just ijlj I have justdone my work.止匕前句尾©before I have neverbeen therebefore.至！目前为止©so farJ Sofar hehas learned200words.多久

⑧how longHow longhave youlived here多少次

⑨how many times Howmanytimeshashebeen toBeijing两词组2去了某地例（去了北京，没回）havehasgone toHe hasgone toBeijing去过某地例（去过北京，回了）havehasbeen toHe has been toBeijing.两构造3for twomonths for+一段时间Jim haslived herefor2months.since lastyear since+过去时间点Lucy has been inBeijing since3years ago.since3years agosince1990since he came heresince+过去时态句子He has been inChina sincehecamehere.假如句子里面没有时间状语，汉语意思可以加“已经”，往往用目前完毕时态4你已经弄丢了从图书馆借的那本书吗？Haveyoulost yourlibrary book目前完毕时态还常常用于下列句型5They haveplanted manytrees inthe last/past fewyears.This is the bestbook I have everread.代isthefirst timeI haveplayed thecomputer games.在目前完毕时中，一次性动词不能和一段时间状语连用例（错）He hasbought the book for3years.因这个一次性动词不能和一段时间连用，改正的措施有buy for3years（去掉一段时间）He hasbought the book..for3years（改为一般过去时，使句子的意思不变）He bought the book3years agolts/lt hasbeen3years sincehe boughtthebook.=3years haspassed sincehe boughtthebook.（改为固定句型—一）It is/lt hasbeen—-since（用延续性动词替代）He hashad thebook for3years.have buy此外@come/arrive/get to/reach—be here（错）改为I havecome herefor3years.I havebeen herefor3years.（Dleave/go f be away（错）改为He hasleft for3hours.He hasbeen awayfor3hours.（）3begin/start—be on（错）改为The filmhas begunfor3minutes.The filmhasbeenon for3minutes.

④open f be open/close fbe closed（错）改为The shophas openedfor3years.The shophasbeenopen for3years.

⑤die fbe dead（错）改为His fatherhas diedfor3years.His fatherhasbeendead for3years.

⑥finish/endf beover（错）改为He hasfinishedthework for3days.The workhasbeenover for3days（错）©join I have joinedthe armyfor3years.改为:或I havebeen inthe armyfor3years.I havebeen asoldier for3years.@buy/catch—have（错）改为Ihaveboughtthebike for3years.Ihavehad thebike for3years.（错）改为He hascaught acold for3days.He hashad acold for3days.©borrow fkeep（错）改为Ihaveborrowed thebook for3years.Ihavekept thebook for3years.尚有其他的归纳如下break fbe brokenget upfbeup marryfbemarried becomebe一lose belost.情态动词5情态动词自身有一定的词义，表达说话人的情绪、态度或语气，但不能单独作谓语，只能与其1他动词构成谓语常见的有等can could,may might,must,need,shall should,will would情态动词无人称和数的变化，后接动词原形否认式是在情态动词背面加个别情态动词2not有过去式形式，也可用来体现愈加客气、委婉的语气和的使用方法l.can could表达“能力；许可；也许性”等为的过去式如lcan/could couldcan CanI useyour bike⑵can用在疑问句中，表达征求意见、祈求许可，答语仍用can;could用在疑问句中，比can更委婉、客气，是一种礼貌的说法，并不表达过去时态，答语用而不能用如can,couldo—Could youtellme thewaytothe zoo—Sorry.I cant.Im newhere［注意］和只能用于目前时和过去时两种时态，未来时中用此外，可can couldbe ableto cant表达否认推测如That beMr Wang.He hasgone toBeijingo和的使用方法

2.may might意为“可以”，表达同意、许可或祈求对方许可，也可表达祝愿的否认形式为may/might may是的过去式，有两种使用方法一种表达过去式；一种表达虚拟语气，使语may notmight may气愈加委婉、客气，或表达也许性更小以开头的一般疑问句，其否认回答用而不may mustnt,用如我可以用你用的钢笔吗？may notI useyour penYoumay puton moreclothes.May yoube happy!Might Iborrow somemoney nowHemight bealive.的使用方法

3.must意为“必须，一定，准是”，表达说话人认为有必要做某事，或命令、规定他人做某事以must及对事物的推测否认形式表达“不得”，“一定不要”如mustntI finishmyworktoday You mustnt driveafter drinkingo⑴must与have to的区别must表达说话人的主观意愿；have to表达客观需要如I mustdo myhomework firsto It israining hardoutside;I stayat home回答由引导的疑问句的提问2must

①肯定回答如Yes,…must.一一Must Igo homenow Yes,you must.

②否认回答No,,••neednt./No,•,,dont/doesnt have to.一—Must Igo homenow No,you.表达对事物的推测，意为“想必；一定，只用于肯定句中；表“推测”时，情态动词与3must动词原形，常为动词连用，如be Theman mustbe ourteachero的使用方法

4.need表达“需要，必须”，重要用于否认句和疑问句中其否认形式为表达“没有必lneed neednt,要，不必；对由构成的疑问句进行回答时，其肯定回答用否认回need must,答用如neednto一一一Need wedo somecleaning nowYes,you must.No,you neednt.还可作实义动词，常用于下列构造2need需要做某事”

①need to do sthI need to learnmore.”某物需要被做

②need doing=needto be doneo如My hairneeds cutting.=My hairneeds to be cut.名词或代词如

③need+All livingthings needwater.和的使用方法

5.shall should用于第一人称的句子中，表达提提议或祈求；用于多种人称的句子中，强调义务或责shall should任，意为“应当如we goout fora walkYou should studyhard atschoolo重要有两个使用方法should havedone用于推测过去已经发生的状况如He shouldhave arrivedby now.用于指本该发生而实际上未发生的状况如Youshouldhave told me sobefore.和的使用方法

6.will would用于第二人称疑问句时，表达征求意见或提提议；为的过去式，可用于多种人称，will wouldwill表达意愿如Will you have alittle soup重要有两个使用方法would havedone表“猜测过去”I guessthe poetwould havebeen abouttwenty whenshe wroteher firstpoem.表“过去本会发生，而实际并未发生”，没有责怪之意本来我是会写信的,不过由于我生病了I wouldhave writtenbefore butIhavebeen ill.用来阐明某一状况，没有责怪之意

7.have to的陈说句形式have to肯定式+动词原形.我得整顿房间.have toIhave to tidymy room否认式+动词原形dont doesnt+have toYou donthave to go ifyou dontwant to.的一般疑问句形式及简略答语have tohave to的一般疑问形式必须借助助动词do或does Doyou haveto lookafter yoursister Yes,I do./No,I dont.的特殊疑问句形式havetoWhat doyouhaveto doon Sundays可用于多种时态have toA、一般目前时Ihaveto visitMr Wang.、一般过去时8That nightwe hadto walkhome becausethere wasno bus.一般未来时C Wellhavetoask ZhangMing instead.、与连用D mayI thinkhe mayhavetohelp hisDad inthe garden.

8.ought to的肯定式应当,应当ought toYoudont lookwell.You ought togoto seethe doctor.的否认式和疑问式ought to的否认形式是后直接加构成，其否认形式可缩写为ought toought not oughtntOne oughtnotoughtntto crossthestreetagainst thered light.的疑问式是将提到句首构成ought toought——Ought wetodoit atonce——Yes,you oughtto.He oughttobehere now,shouldnt oughtnthe表达过去应做某事而实际未做“oughtto+have+done”.这时和可以互换使用You oughtto havetoldme that butyou didntoughttoshould三.l.litter/rubbish/garbage/waste和含义相似，美国英语，而英国英语这两个词词义较为详细，garbage rubbishgarbage rubbish指必须及时清除的剩余物，例如厨房里的垃圾，生活垃圾等等指公共场所丢弃的小片/块垃圾，如纸片、塑料袋、易拉罐、饮料瓶等litter作名词用时可表“废物”的总称waste另waste time indoingsth在…底部在…顶部

2.at thebottom of/atthe top ofHeshouted atthetopof hisvoice inorder thathe mightbe heard.

3.advantage

2.take advantage of=make fulluse of运用机会、时机等1They tookadvantage ofthe fineweather toplay tennis.运用某人的处境、弱点等2He alwaystook fulladvantageofthe mistakesmade byhis rivals.⑶欺骗某人，捉弄某人，占某人的廉价He hasalways beentaking advantageofme.对某人有利

3.to sbsadvantage Itwill beto youradvantage to study abroad..四个花费句型

45.beharmfulto=do harm to.二Smoking isharmfultothe healthSmoking doesharmtoyour health.四个参与辨析6肩负得起干某事［常与连用］

7.afford todosthcan,could,be abletoHe toldmethatthe firmcould notafford topay suchlarge salaries.他告诉我企业无法支付如此巨额的工资短语

8.turn偿还打开turn inYoumustturn inyour equipmentbefore youleave the army.turn oncould you turn关掉（煤气，水，电，收音机，电视机等）onthe light,please turn off Dontforget toturnoffthelight出现，才氐达

②开大音量when youleave,turn up

①He promisedto comebut hasn/t turnedup yet.I

①关小

9.throwawayHe threwaway theold sofa.Dont throwaway thisopportunity.

10.work工作；（音乐、艺术）作品；工厂工作work n.v.（）He hasmuch worktodo.UThe mangained hiswealth byprinting worksof famouswriters.（做“作品”讲，为可数名词，但常用复数）The glassworks is/are nearthe station.玻璃厂在车站附近（做“工厂”讲，只用复数形式，但谓语动词单复均可）英语中有些名词，单复数形式意义有差异方式，措施礼貌，礼仪胳膊武器manner mannersarm arms水海水，水域木头森林water waterswood woods偿还；使想起

11.bring backThesebooks mustbe brought back withina week.Your articlebroughtbacksad memoriesfor me.bring up抚养长大bringin弓|进bring forward提出bring about带来，导致鼓励

1.1inspirationninspire v努力去做某事

13.try todo=try onesbest todoEvery studentshould trytostudyhard inorder tostudy ina university.与…有关我和他无任何关系

14.be related toIam notrelatedtohim inany way.。