unit6 sectionA 知识点精讲精练2022-2023学年英语九年级全一册（人教新目标版）

Unit6sectionA知识点讲解1、invent发明；创造指创造出以前不存在的东西，尤指科技上的发明创造。例句：—Doyouknowwhoinventedtheelectriclightbulb?你知道是谁发明了电灯泡吗？—Edison.爱迪生。+orinventor(n.发明家)+or【助记】invent+ion(v.发明；创造)invention(n.发明；发明物)+ion2.with有；带有；具有表示某物带有或具有某种特征。【拓展】with作介词，常见的用法还有：意为＂和……一起＂，表示伴随。例句：Iliketotalkwithmyfriends.我喜欢和朋友们一起交谈。(2)意为＂用……＂，表示使用某种工具、手段等。例句：Cutthewatermelonwithaknife.用刀把这个西瓜切开。(3)意为＂关于；对于；对……来说＂，表示关系等。例句：Areyoupleasedwiththeresult?你对这个结果满意吗？3、Itissaidthat...据说……；有人说……其中it是形式主语，that引导的从句作真正的主语。例句：Itissaidthatwisdomisbornwithaman.有人说智慧是与生俱来的。【拓展】类似的句型还有：Itisbelievedthat...＂人们认为……＂；Itisreportedthat...＂据报道……＂；Itisknownthat...＂总所周知……＂；Itissupposedthat...＂据猜测……＂。4、not...until...直到……才……主句/句子的动词一般是非延续性动词，它所表示的动作直到until所表示的时间才发生。until可用作介词，其后接表示时间的名词；也可用作连词，引导时间状语从句。例句：Shecan’tleaveuntilFriday.直到星期五她才能离开。5、mention/’menʃn/v.提到；说到mention的主要用法：(1)mention＋that宾语从句例句：HementionedthatthefoodwasinventedbyaChinese.他提到这种食物是由一个中国人发明的。(2)mentionsb./sth.(tosb.)(向某人)提起某人或某事例句：Don’mentionitbeforethechildren.别在孩子们面前提及此事。(3)mentiondoingsth.提到做某事例句：WheneverImentionedhavingdinnertogether,hesaidhewastoobusy.无论何时我一提起一块儿吃顿饭，他就说太忙。6、remain保持不变；剩余remain作不及物动词，还可意为＂留下，剩下＂。例句：Sheremainedathome.她留在家里。【拓展】remain还可作系动词，后可接形容词作表语。例句：Thisplaceremainsverycoolallsummer.这个地方整个夏天都很凉爽。7、takeplace发生，出现例句：Whendidteatradetakeplace?茶贸易出现在什么时候？【辨析】takeplace与happentakeplace不能用于被动语态；常指事先安排或事发有因的事情。happen不及物动词，不能用于被动语态，常指偶然发生的事情。8、withoutdoubt毫无疑问；的确(1)doubt作名词，意为＂疑惑；疑问＂。例句：Ifthereisanydoubt,youhadbettermakecertain.如果有什么疑问，你最好弄清楚。(2)doubt作动词，意为＂怀疑；不相信＂，其后可直接跟名词或代词作宾语。例句：Ihavenoreasontodoubthim.我没有理由怀疑他。【注意】无论doubt用作名词还是动词，在肯定句中其后常接whether从句，在否定句和疑问句中常接that从句。例句：Wedoubtwhetherhewillcome.我们怀疑他是否会来。例句：Thereisnodoubtthatourexperimentwillsucceed.毫无疑问我们的实验会成功。同步练习。（一）完形填空Awindpowergenerator(发电机)isagreatwaytoproduceelectricityandtosavemoney.Ifitis____1____bycombiningsolarandgaspower,itcanbeaverygoodwaytosavemuchmoneyandmakeourmuch____2____.Awindgeneratorcanbeagreatwaytosupplyyourhomewithnatural,renewable(可再生的)energy.Notonlyit____3____less,itisalsoacleansourceofenergythatcanbestoredaslongasthereis____4____.Windgeneratorscanbeeasilymadeathome____5____therightguidelines(指导原则)foryoutofollow.Buttheproblemisthatwedon’thaveenoughwindydaystoproduce____6____oftheenergyforawholeday.Thisis____7____thewindpowergeneratorusedforcampingisfine,butnotnearlyenoughfortheaveragehousehold.Therearemany____8____intheUnitedStateswhichusewindpowergenerators.Thefarmerssetmachineslikepropellers(螺旋桨)onpolesandbuildtheminfarawayareasbecausetheycanbetoo____9____.Therearealotofotherthingsyoushouldconsiderbeforebuyingawindpowergenerator.Manylocalenergycompanieshavelimitedusingwindpowergeneratorsforextra____10____.Andthetechnologybehindwindpowergeneratorsisnotprefectyet.However,ifyouareabletosupplementtheenergyyouneed,youcanuseawindpowergenerator.Thiswayyouwillsavemoneyandprotecttheenvironmentaswell.1．A．taken B．used C．made D．cut2．A．richer B．dirtier C．cleaner D．bigger3．A．costs B．pays C．spends D．takes4．A．cloud B．snow C．rain D．wind5．A．about B．of C．with D．on6．A．any B．all C．none D．few7．A．how B．when C．where D．why8．A．farms B．schools C．factories D．families9．A．expensive B．large C．noisy D．terrible10．A．usage B．electricity C．money D．food（二）阅读单选Inventionsmaketheworldbetter,smarterandalittlemorefun.Thefoldingbikehelmet(头盗)Peoplehatetowearahelmetbecauseit’sthickandheavy.Morpherisabikehelmetmadefromplastics.Itisjustasstrongasthetraditionalones,butflexible(灵活的)enoughtofoldalmosttotallyflat.Alsoitismucheasiertocarry.ShoesthattiethemselvesAfterweseethemovieBacktotheFuture,almosteveryonewantsapairofself-tyingshoes.Now,theshoedreamcomestrueinAmerica.Whenyoupressabutton,theshoescantiethemselves.Thesmartalarmclock—HelloSenseAnalarmclock,calledHelloSense,canimproveyoursleep.Itcancontrolthetemperature,lightandevenairqualityinyourbedroomtohelpyouhaveaperfectsleepenvironment.Anditcanrecordyoursleepcycles.SweetpotatoesthatcouldsavelivesThelack(缺乏)ofvitaminAcancauseblindnessandmanyotherillnesses.Insub-SaharanAfrica,plantexpertsarehelpingthemgrowakindofnewsweetpotatoes.Thesepotatoescanhelpthemfightagainstsomeillnesses.Thefoldingbikehelmetis_________.A．thickandheavy B．madefrommetalC．notasstrongasatraditionalone D．flexibleenoughtofoldalmostflat12．Now,thedreamofshoescantiethemselvescomestruein_________.A．China B．Japan C．America D．France13．ThesmartalarmclockcanNOT_________.A．improveoursleep B．controlourweightC．recordoursleepcycles D．controlthetemperatureinthebedroom14．Ifachildhasapooreyesight,hemaybeinthelackof_________.A．vitaminA B．vitaminB C．vitaminC D．vitaminD15．Youcanfindthepassageina_________.A．newspaper B．storybook C．guidebook D．cookerybookHigh­speedtrains，Alipay(支付宝)，sharedbikesandonlinepaymentareseenasthenewFourGreatAchievementsofChinabyyoungforeigners，accordingtoavideosurveybytheSilkRoadResearchInstituteofBeijingForeignStudiesUniversity.Inthevideo，youngpeoplefrom20countriesalongtheBeltandRoadrouteswereaskedtonamegreatinventionsthathadinfluencedtheirlivesinChina.Thefollowingiswhattheysaidfrom4youngpeopleofthem.Bond，Bangkok，ThailandYoucanfindmanywonderfulthingsthatwedon'thaveinThailand.Wedon'thaveAlipayorotheronlinepaymentappswithwhichIcangoshoppingwithoutsteppingoutofthedoors.IfonlyIcouldbringthembacktomycountry！Yala，Kathmandu，NepalI'mfromNepal.Ialwaysgooutbybike.Bicycle­sharingsystemallowspeopletoborrowabikefrompoint“A”andreturnitatpoint“B”．It'snotonlycheapbutalsoalow­carbon(低碳的)andhealthywayoflife.Ilikeitverymuch.Arehana，NewDelhi，IndiaMylifeinBeijingisquitedifferentfromthatinIndia.HereinChina，IseldomtakemoneywithmewhenIgoout.IcanpayforalmosteverythingbyAlipay.Oh，it'samazing！However，inIndia，ifyoudon'ttakewalletwithyou，you'llbe__in__a__tough__spot．Justin，Bucharest，RomaniaI'mfromRomania.Chinaisreallyagreatcountryanditshigh­speedrailwaysareveryfast，convenientandtidy.Ittakesmeonly6hoursfromBeijingtoShanghaibytrain.Itsavesalotoftimeandit'scheaperthanairplane.Iwishwewouldhavehigh­speedrailwaysinourcountrysomeday.WhatdoesJustinthinkofthehigh­speedrailwaysinChinaaccordingtohiswords?A．Fastandtidy.B．Convenientandwonderful.C．Cheapandamazing.D．Cheapandtidy.17．Whatdo“A”and“B”refertoinYala'swords?A．Twobikes. B．Tworiders.C．Twoplaces. D．Twowaysoflife.18．Whatdoestheunderlinedphrase“beinatoughspot”mean?A．Getintotrouble. B．Loseyourway.C．Stayinsilence. D．Beverypoor.19．WhichofthefollowingisTRUEaccordingtotheaboveinformation?A．Bicycle­sharingsystemprovidesbikesforfree.B．Therearenohigh­speedrailwaysinRomanianow.C．Alipayistheonlywayofpayingforthings.D．PeopleinThailandcanuseonlinepaymentappsconveniently.◆Greenteaisthebestchoiceforofficeworkers.Peoplewhoalwaysworkinplaceswithairconditioningmayfaceskinproblemssuchaseasilydryskin.Amongallthedrinks,greenteaisthebestchoice.Becausethereareimportantthingsingreentea.Moreover,drinkingmoregreenteacanpreventcomputerradiation(辐射)．◆Winteristheseasontodrinkblacktea.Chinesemedicinebelievesthatdifferentpeopleshoulddrinkdifferentteabasedonthedifferentcharacteristicsandtastesofeachkindoftea.Blackteacanwarmthestomachandquickendigestion(消化).Therefore,drinkingwarmblackteainthecoldwinterisamostsuitablechoice.◆Donotdrinkstrongtea.Strongteamaymakethebodyfartooexcitedandcanbadlyaffectthecardiovascular(心血管的)system(神经系统)aswellasthenervoussystem.Forapersonwhohasproblemwiththeseparts,todrinkoverly(过度地)strongteamaycauseheartandbloodpressureillness,orevenmaketheoldillnessesmuchworse.◆Donotdrinktoomuchteawhenyouareeating.Drinkingtoomuchteaorstrongthickteamaynotbegoodfortakinginmanyconstantelementsandtraceelements(常量元素和微量元素).Also,peopleshouldnotdrinkteawithmilkorothermilkyfood.20．Ifyoualwaysworkwiththecomputer,whatkindofteashouldyoudrink?A．Blacktea. B．Greentea.C．Strongtea. D．Hottea.21．Drinkingtoomuchstrongteamaycause________．A．headaches B．heartdiseaseC．skinproblems D．stomachache22．WhichofthefollowingisNOTtrue?A．Ifyouhavestomachache,youshoulddrinkblacktea.B．Whenwechoosetea,weshouldknowthecharacteristicsandtastesofeachkindoftea.C．Strongteamaytakethebodyfartooexcited.D．Attable,weshoulddrinkteaasmuchaspossiblebecauseit’sgoodforourhealth.23．Whichisthebesttitleforthearticle?A．GreenTeaB．AllKindsofTeaC．TeaandSeasonsD．HowtoDrinkTeaCorrectly（三）语法填空阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。Usingateabagismostwesterners'favoritewayofdrinkingtea.Doyouknowhowitcameabout?Theteabagwasinventedin1908byThomasSullivan，anAmericantea___24___(sell)．Hewassendingoutfreeteainsilkbags___25___peopletotry.Peopleputthebagstogetherwiththetea___26___(leaf)intothecupandaddedhotwater.Theteatastedgood，andpeoplethoughtitwaseasy___27___(clean)thecup.TheywerenothappywhenSullivanstartedsendingthemtheloosetea(散装茶)again.Sullivan___28___(realize)thathehadahotnewthinginhishands，andhebuilt___29___machinetopackthebags.___30___teabagsbecamepopular，theywerechangedfromsilktogauze(薄纱)andlaterpaper.In1952，LiptonTeamadetheteabagevenmorepopularwithitsinventionofthefour­sidedteabag.TeabagsweresoonahitintheUK，andtodayabout85%oftheteaintheUKis___31___(pack)inpaperbags.However，manypeoplestillpreferloose­leaftea.Thisisbecausesometeacompaniesputpoorqualityteain___32___(them)teabags.Butformost___33___(drink)，teabagsarestillaneasyandtastywaytogo.（四）多句选词填空用方框中所给词的适当形式填空。inside,cancel,connect,doubt,brain34．Therewassome________whetherYaoMingcouldbecomeagreatbasketballplayerornot.35．Doctorsbelievethatlung(肺)canceris________withsmoking.36．Canyoutellmewhythenewyearpartywas________?37．ThepurposeofprofessorRead’sresearchistocomparecomputerfunctionswith________working.38．Hewaswildwithjoywhenheopenedtheenvelopeandreadtheletter________.答案1．B

2．C

3．A

4．D

5．C

6．B

7．D

8．A

9．C

10．B【解析】本文是一篇说明文，向我们介绍风能发电的相关内容。1．句意：如果把太阳能和天然气结合起来使用，这将是一个很好的方法，可以节省很多钱，也更清洁。taken拿；used使用；made制作；cut切。根据“Ifitis...bycombiningsolarandgaspower”可知，把太阳能和天然气结合起来使用，故选B。2．句意：如果把太阳能和天然气结合起来使用，这将是一个很好的方法，可以节省很多钱，也更清洁。richer更富有的；dirtier更脏的；cleaner更干净的；bigger更大的。根据常识可知，风能、太阳能和天然气都是清洁能源，所以如果将它们结合起来使用将会使我们的生存环境更加干净。故选C。3．句意：它不仅成本低，而且是一种清洁的能源，只要有风就可以储存。costs花费钱，主语是物；pays付款，主语是人；spends花费，主语是人；takes花费，主语是物。it在句中指代awindgenerator，当物作主语时，表示“花费钱”要用cost。故选A。4．句意：它不仅成本低，而且是一种清洁的能源，只要有风就可以储存。cloud云；snow雪；rain雨；wind风。根据常识可知，风力发电的前提是有风。故选D。5．句意：根据正确的指导方针，你可以很容易地在家里制作风力发电机。about关于；of……的；with和；on在……上。根据“Windgeneratorscanbeeasilymadeathome...therightguidelines”可知，在家使用风力发电需要有正确指导，介词with表示“带有”符合语境。故选C。6．句意：但问题是我们没有足够多的有风的日子来生产一整天的所有能源。any任何；all所有的；none没有；few几乎没有。根据“Buttheproblemisthatwedon’thaveenoughwindydaystoproduce...oftheenergyforawholeday.”可知，不够一整天的所有能源，故选B。7．句意：这就是为什么用于野营的风力发电机很好，但对普通家庭来说远远不够的原因。how如何；when何时；where哪里；why为什么。根据“Thisis...thewindpowergeneratorusedforcampingisfine,butnotnearlyenoughfortheaveragehousehold.”可知，风力发电产生的能源有限是它适用于野营但不适用于家用的原因，故选D。8．句意：美国有许多农场使用风力发电机。farms农场；schools学校；factories工厂；families家庭。根据“Thefarmers...”可知，是农场，故选A。9．句意：农民们把像螺旋桨一样的机器安装在杆子上，然后在很远的地方建造，因为它们可能太吵了。expensive昂贵的；large大的；noisy吵闹的；terrible糟糕的。根据常识可知，人们将它们建在很远的地方是因为风力发电会产生很大的噪声。故选C。10．句意：许多当地能源公司已经限制使用风力发电机来提供额外电力。usage使用；electricity电；money钱；food食物。风力发电是发电方式的补充，故此处表示额外的电能。故选B。11．D

12．C

13．B

14．A

15．A【解析】本文介绍了四种发明，详细地介绍了它们的特点。11．细节理解题。根据“Itisjustasstrongasthetraditionalones,butflexible(灵活的)enoughtofoldalmosttotallyflat.”它和传统的一样坚固，但又足够灵活，可以几乎完全扁平折叠。可知，这种可折叠的自行车头盔足够灵活，几乎可以折叠成平面。故选D。12．细节理解题。根据“Now,theshoedreamcomestrueinAmerica.”可知，这种新型的能够自己系鞋带的鞋子在美国已经被成功研发出来了。故选C。13．推理判断题。根据“Analarmclock,calledHelloSense,canimproveyoursleep.Itcancontrolthetemperature,lightandevenairqualityinyourbedroomtohelpyouhaveaperfectsleepenvironment.Anditcanrecordyoursleepcycles.”可知，这种新型的智能闹钟可以改善你的睡眠；可以控制卧室的温度、光线甚至空气质量，帮助你拥有一个完美的睡眠环境；还可以记录你的睡眠周期。而B选项“控制我们的体重”文中并未提及。故选B。14．细节理解题。根据“Thelack(缺乏)ofvitaminAcancauseblindnessandmanyotherillnesses.”可知，缺乏维生素A会导致失明和许多其他的疾病。因此，如果一个孩子视力差，他可能缺乏维生素A。故选A。15．推理判断题。根据“Inventionsmaketheworldbetter,smarterandalittlemorefun.”结合文章内容，可知本文主要介绍了四种不同的发明创造，因此最可能出现在报纸上。故选A。16．A

17．C

18．A

19．B【解析】文章大意：短文讲了高速列车、支付宝，共享自行车和在线支付被视为中国新的四大成就，一些外国的年轻人对这些新事物提出了自己的看法。16．细节理解题。根据Justin所说的话thehigh-speedrailwaysareveryfast，Convenientandtidy．高铁快速、方便和整洁．可知他认为中国的高铁快速和整洁；故答案选A。17．细节理解题。根据Yala所说的话Ialwaysgooutbybike．Bicycle-sharingsystemallowspeopleborrowabikefrompointAandreturnitatpointB．我总是骑自行车出去，共享单车允许人们从A处借，然后把它归还在B处。可知这里"A"和"B"指的是两个地方；故答案选C。18．词义猜测题．根据上文说IcanpayforalmosteverythingZhiFuBao．我几乎可以用支付宝支付每件东西，和下文however但是，表示转折，可知应是说，但是，在印度，如果你没带钱包，你会陷入困境；结合选项，可知A选项“Getintotrouble.”意为陷入困境，故答案选A。19．细节判断题。根据Justin所说的话IamfromRomania．Iwishwewouldhavehigh-speedrailwaysinourcountrysomeday．我是罗马尼亚人，我希望有一天我们的国家能有高速铁路。可知现在在罗马尼亚没有高铁，故答案选B。20．B

21．B

22．D

23．D【解析】短文大意：饮茶对人是有好处的，但是方法要正确，本文从四个方面介绍了人们如何正确饮茶。20．根据◆Greenteaisthebestchoiceforofficeworkers.中最后一句Moreover,drinkingmoregreenteacanpreventcomputerradiation(辐射)可知，多喝绿茶可以防止电脑辐射。故选B。21．根据◆Donotdrinkstrongtea中最后一句.Forapersonwhohasproblemwiththeseparts,todrinkoverly(过度地)strongteamaycauseheartandbloodpressureillness,orevenmaketheoldillnessesmuchworse.可知，喝过量的浓茶会导致心脏和血压疾病。故选B。22．根据◆Donotdrinktoomuchteawhenyouareeating.中第一句Drinkingtoomuchteaorstrongthickteamaynotbegoodfortakinginmanyconstantelementsandtraceelements(常量元素和微量元素).可知，喝太多茶或浓茶可能不利于摄入许多常量元素和微量元素。所以我们吃饭时不应该多喝茶。故选D。23．根据短文大意可知，本文主要介绍了人们如何正确饮茶的方式方法，所以HowtoDrinkTeaCorrectly符合文意。故选D。24．seller

25．for

26．leaves

27．toclean

28．realized

29．a

30．As/While

31．packed

32．their

33．drinkers【解析】短文大意：短文介绍的是西方流行的饮茶方式袋装茶，