八上unit-3-4课文、语法

ReadingComputerfactsSmallerandbetterInthe1940s,thefirstcomputerswerebiggerthancars.Nowcomputersarebecomingsmallerandbetter.Somecomputersaretiny.Youmaybeunawareofthem.ThereisprobablyoneinsideyourTVorwashingmachine.Youdependonyourcomputersmorethanyourealize.Whatcanwedowithcomputers?Wecanusecomputerstocalculate.Theycancalculateatafasterspeedthanwecanandalmostnevergivewronganswers.Wecanalsotypeanddrawthingswiththem.Inaddition,computerscandoimportantjobslikeoperatingrailwaysandflyingplanesandspaceships.Isacomputercleverthanme?Theansweris“No”.Yourbraincanproducenewideasbutcomputerscannot.However,onedaycomputersmaybeabletodoabetterjobthanhumanbeings.Forexample,theymaybebetterthandoctorsatdoingtheirjob.Whatwillhappentousifcomputerscandoallofourjobs?Willwehavenothingtodo?Computersmaychangeourlives,butwilltheymakethembetter?1、factn.事实，真相Infact事实上，其实Asamatteroffact事实上，其实2、inthe1940s在20世纪90年代（的时候）3、smallerandsmaller越来越小4、beunawareof~没意识到……5、insideprep.在……里面6、dependv.依靠，依赖dependentadj.依赖的，依靠的dependableadj.可靠的dependon/upon依靠，依……而定dependonit毫无疑问，没问题Italldepends.这也难说，要看情况而定。7、dowith处理(与what搭配）dealwith处理（与how搭配）8、atafasterspeed以一个更快的速度9、givewronganswers/giveawronganswer给出错误的答案10、withprep.和……人一起；具有……；用……11、additionn.加法，增加物inaddition另外inadditionto除了……之外12、likev.喜欢Prep.像……likesth.喜欢某物liketodosth.=likedoingsth.喜欢做某事13、oneday（过去或将来的）某天someday(将来的）某天14、beabletodosth.=can能够做某事15、Forexample例如（一个例子）Suchas例如（多个例子）16、bebetteratdoingsth.更擅长做某事begoodatdoingsth.擅长做某事begoodfor...对……有好处begoodto...对……友好17、havenothingtodo无事可做18、makev.制作，使得，让makesb.dosth.使得某人做某事makesb.adj.使得某人……MorepracticeComputergameproblemsGoodafternoon,parentsandteachers.Thankyouforyourattendingthismeeting.Lastweek,oneofourstudentswenttohospital.ThestudentplayedcomputergamesontheInternetalldaySaturdaywithoutstoppingtodrink,eatorsleep.Finally,hebecameveryill.Somestudentsplaycomputergamesfortoolong.Thisisaseriousproblem.Inthepast,studentsusedtoplayoutsidemoreoften,butNowtheyspendmoretimeinfrontofcomputers.Thisisbadfortheirhealth.Tomorrowwe’llhavesomeexpertsheretotalktothestudentsaboutthebadeffectsofplayingcomputergames.They’llalsogivesomeadviceonhowtousecomputersforstudying.Ihopewecanallworktogethertostopstudentsfromspendingtoomuchtimeplayingcomputergames.Thankyouforyourtime.1．Thankyou/thanksfor(doing)sth.因……而感谢某人2．With+n./prep/doing有……Without+n./prep/doing没有……，缺乏……3．OntheInternet在网上4．Usedtodosth.过去常常做……Beusedtodoingsth.习惯做某事5．Sb.spendtime/moneyonsth.某人在某物上花钱/时间Sth.costsmoney某物花钱Payforsth.为某物付钱Ittakessb.sometimetodosth.花某人多少时间做某事6．Infrontof在……的前面(范围之外）Inthefrontof在……的前面（范围之内）7．Bebadfor对……有害/?/?8．Givesomeadvice给建议9．Hopeforsth.希望得到某物Hopetodosth.希望做某事Hope(that)+句子希望……10．Stoptodosth.停下来去做某事（做别的事）Stopdoingsth.停止做某事（停止正在做的事）Stopsb.fromdoingsth.阻止某人做某事11.Bydoingsth.通过做某事12.Haveto不得不……（客观的）Must必须（主观的）13.Howoften多久一次（问频率）14.Much+比较级……的多15.Oneof+最高级+n.(Pl.)……之一16.Become+adj.变得……17.Lookforwardto(介词）期望……所有的介词后面加动词，都加动词的ing形式。Unit3order订货；订购compare比较；对比monitor显示器speaker扬声器mainunit主机keyboard键盘mouse鼠标type打字brain脑control操纵，控制expensive昂贵的tiny极小的；微小的depend依靠；依赖calculate计算speed速度operate操作；控制railway铁路系统company公司price价格total总额；总计inch英寸sell（sold，sold）出售；售卖popular受欢迎的workas从事……工作(be)unawareof没意识到；未察觉dependon依靠inaddition除…以外（还）grandtotal总计；共计lookforwardto期盼；期待Unit4advertisement广告funny滑稽的；好笑的create创造；创作telephone电话；电话机wheel车轮；轮子comfortable使人舒服的；舒适的carriage四轮马车century世纪passenger乘客；旅客invent发明；创造practical有用的；适用的since从……以后；自……以来distance距离；间距mobilephone移动电话；手机anytime在任何时候develop开发；研制lamp灯candle蜡烛daytime白天；日间dust灰尘；尘土special特殊的；特别的wing翅膀；机翼introduction引言insteadof代替；作为……的替换petrol汽油sincethen自那以来keepintouchwith与……保持联系inthedaytime在白天keep…off不接触；远离……atthesametime同时ReadingGreatinventionsGreatinventionschangetheworld.Theyhelppeopleliveabetterlife.Thefollowingarethreeofthemostimportantinventionsinhistory.ThewheelThewheelperhapsisthegreatestinventioninhistory.Afteritsinvention,travelingbecamefasterandmorecomfortable.Afewyearsago,peoplestartedtousewheelsoncarriages.Intheearly19thcentury,thefirsttrainsbegantocarrypassengers.Atthestartof20thcentury,carsbecamepopular.Withoutthewheel,wewouldnothavetheseinventions.ThetelephoneAlexanderGrahamBellinventedoneofthefirstpracticaltelephonesin1876.Sincethen,peoplehavebeenabletospeaktoeachotheroverlongdistances.Todaymillionsofpeopleacrosstheworldownmobilephones.Theyallowpeopletokeepintouchwitheachotheranytime,anywhere.ThelightbulbThomasEdisondevelopedthefirstpracticallightbulbin1879.Beforetheinventionofthelight,peoplehadtouseoillamps,gaslampsorcandlestoseeatnight.Withlightbulbs,peoplecandoAsmanythingsintheeveningsastheycaninthedaytime.Canyouimaginelivingwithoutthem?1.Change...into...把……变成……2.Helpsb.(to)dosth.帮助某人做某事Helpsb.withsth.帮助某人做某事3.Liveabetterlife过一个更好的生活Livea...Life过一个……的生活4.Threeof...……中的三个5.Inhistory在历史上6.Afewyearsago几年前7.Starttodosth.=startdoingsth.开始做某事atthestartof.....在……的开端atthestartof20thcentury在20世纪初8.Bepopularwith/among.....受……的欢迎9.With/without+n有……/没……10.Sincethen自从那时起，从那时以来11.Beabletodosth.能够做某事12.Eachother=oneanother相互13.Overlongdistances14.Allowsb.todosth.允