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第练现在完成时
(一)09墓|积累运用现在完成时表示过去发生的动作对现在造成的影响或结果,也可以表示从过去某一时间开始,一直持续到现在的动作或状态常与(已经),(刚刚),(曾经),(从不),(以前),(仍然)等already justever neverbefore yet连用考点1现在完成时的结构主语+动词的过去分词+其他.have/has+肯定句我已经完成了我的作业I have already finishedmy homework.主语+动词的过去分词+其他.have/has+not+否定句.我还没收到他的来信I have not heardfrom himyet主语+动词的过去分词+其他?Have/Has+主语+Yes,have/has.主语+No,have/has not.一般疑问句和简略一你曾去过北京吗?Have you ever beento Beijing回答是的,我去过/—Yes,I have.不,我没去过No,I havent.注意havenot常简略为havent,has not常简略为hasnt考点2already与yet在现在完成时中的用法通常用于肯定句中,already adv.已经;早I havealready hadbreakfast.我已经吃一般用于后,实义have/has已过早饭了动词前,也有放在句尾的情况.还;已经用于否定句和疑问句yetadu Ihavent donemy homeworkyet.C.has beencaught;have it中,一般用在句末D.has been我还没有做作业fixed caught;haveit fixing
2.Im afraidyou ahigh fever.—Yes,I ahigh feverfor twodays.基础过关练A.have;have gotB.have got;have hadC.had;have hadD.have got;have
3.——How longhave they
一、单项选择
1.The robota virus.You shouldas soonas possible.A.married B.had marriedC.is marriedD.been marriedA.has caught;have itfixed B.has caught;have itfixing
4.Mike Smithhas beenin Chinafor fifteenyears andhe a lot ofChinese friends.A.makes B.made C,has madeD.will make
5.In facthe knowsthis placevery well,for hethere threetimes.A.has beenB.has beento C.has goneD.has goneto
6.(2017・无锡周铁学区联盟月考)一You Joylandin Changzhoulast summer——For more than twentyyears.一No.I of a placecalled Joyland.A.have visited;havent heardB.visited;havent heardC.have visited;didnt hearD.visited;didnt hear
7.—youeverto HongKong一Yes,only once.A.Did;go B.Have;gone C.Do;go D.Have;been
8.The bigchanges inthe cityalso ussome.A.has brought;question B.have brought;problemC.has brought;questions D.have brought;problems一
9.Hi,I youfor along time.一Iin HongKong.Fve justcome back.A.havens seen;shall beB.didnt see;will beC.haven9t seen;was D.haven5t seen;am
10.We quitea lotof workfbr themorning,now letstake abreak.A.are doingB.will doC.have doneD.were doing
11.——May Iborrow yournew-bought bookThe Adventuresof TomSawyer now一Im afraidnot.I onlyhalf ofit,and Illtry tofinish itthis weekend.A.read B.was readingC.have readD.will read
12.—Our governmenta newrule tostop youngpeople playingvideo gamestoo long.一Yes,the rulesays theteenagers under18can playonline nomorethan3hours aweek.A.will makeB.is makingC.has madeD.make一
13.What doyou thinkof thefilm Anneof GreenGables一Its fantastic.T itmany timesalready.A.see B.will seeC.have seenD.am seeing
14.Betty wants to buyher mothera birthdaypresent,but shewhat tobuy.A.doesn9t decideB.didnt decideC.hasnt decidedD.won9t decide
15.In thepast fiveyears,the numberof studentsin ourschool growing.A.kept B.have keptC.has kept
16.The filmThe BattleAt LakeChangjin IIis verytouching andI ittwice.A.sees B.has seenC.have seenD.saw
17.——As weknow,the movieI AmWhat IAm ahit thesedays.一Yeah.Many people,especially,teenagers lovewatching it.A.become B.was becomingC.has becomeD.became
18.—I likethe fruitsoup,Mum!But itlltaste betterif itis sweeter.一I thinkI enoughsugar.Eating toomuch sugarisnt goodfbr yourhealth.A.add B.am addingC.will addD.have added
19.My hometownalot.Come andsee thechanges ifyou havetime.A.changes B.changed C.will changeD.has changed
20.—How canI contacthim——I you,werent youlisteningA.B.am tellingC.will tellD.have told碰,警[能力提升练
二、语法选择Rashad Conwellhas workedas aFedEx driverfor eightyears.He thepeople wholive alonghis(路线)regular routein TegaCay,South Carolina.He evenknows who is usually at home during the day andwhoisnot.On Tuesdayafternoon,as Rashad was working,he sawsmoke fromthe gardenofahouse.Knowing thisfamily wasusuallyathomeduringtheday,Rashad stoppedhis truckand ranto thefront door.(包裹)When awoman openedthe door,she thoughtRashadwasdelivering apackage.Instead,to hersurprise,Maam,your houseis fire!^^Rashad toldher.Rashad helpedher andher grandchildget outfromthe housewithin time.Randy,man,working inthe neighborhoodsaw thesmoke andwent towarn the family aswell.He helpedJohn,one of thefamily members,escape fromthe room.It washot thatI couldntget awayfromthe fireby myself.John said.If they hadnt toldus toget out,I wouldhave beenin greatdanger.lucky dog!”Thanks toRashad andRandy,all of thefamily.Although theirhome was a completemess,they feltluckyto beC
21.A..is knowingB.knew hasknown D.will knowC
22.A.a B.an theD./.c.
23.A.rise B.rose risenD.risingc.
24.A.under B.on inD.fromc.
25.A.short B.shorter shortestD.the shortestc.
26.A.another B.other othersD.the otherc.
27.A.such B.very tooD.soc.
28.A.What aB.How aWhat D.Howc.
29.A.are savingB.are savedwere savedD.were savingc.
30.A.live B.alive livelyD.living
三、阅读理解Ants havethe abilityto findout cancerous cells inhumans,a newstudy hasdiscovered,suggesting theycould beused for(诊断)cancer diagnosisin future.Ants candiscover the cancerous cellswhich aredifferent fromhealthy cells.Thanks to their senseof smell,the studyalso(定位)added,ants couldturn outto bebetter atlocating cancerous cells inhumans thandogs.To improvetheir research,the scientistshad testswith36ants,smelling cellsunder anexperiment witha lowercost and(暴露)efficient study.First,they exposed the antstothe smell ofa sampleof canceroushuman cells,then theywere givensugarfor aprize.In asecond step,the scientistsexposedthe antstotwo differentsmells.One wasa newsmell andthe secondwas thesmellofthe cancerous cells.Finally,theantsfollowed thecancerous cellsdirectly withthesmelltheyhadsmelt inthe firststep.This testshows thatants cantell thedifferences between thecancerous cells and healthy cellswith hightalent,capability tolearnquickly,points outCNRS ina news.This isnt the firsttime thatscientists haveused theanimal senseof smellto findcancerous cells.For example,dogs nosesarefit for medical diagnosisand usedfor thedetection ofcancer,which canoffer theproper medicaltreatment,the scientistsexplained.However,training themto doso requiresseveral monthsto ayear.(炸The testcould beused invarious ofother smelltasks,such asfinding thedifferences amongthe drugs,explosives药),spoiled food,or otherdiseases.
31.Why antscan findout thedifferences betweenthecancerouscells andhealthy cellsA.Because antshaveastrong senseof smell.B.Because specialistsdo someresearches.C.Because antshave hightalents oflearning.D.Because thisisntthefirst studyto findout thecancerouscells.
32.Which ofthe followingbest describesants abilityA.Clever andweak senseB.Efficient andstrongC.Hard-working andlovely D.High talentand capable
33.The underlinedword detectionin Paragraph4means A.test B.training C.discovery D.change
34.We canlearn fromthe passagethat.A.scientists foundthe abilityof antswithout anyeffortB.dogs nosesare onlywell suitedformedicaldiagnosisC.scientists haveused theanimal senseof smellto findcancerouscellsfor manytimes D.training theanimals requiressomedays toa month
35..Which canbe thebest titlefor thepassageA.A newstudy aboutants abilityB.The informationabout senseof smellC.The differencesbetweenthecancerouscellsandhealthycellsD.Cancer diagnosisin future
四、语法填空阅读下面短文,在空白处填入个适当的单词或括号内单词的正确形式1The ideaof livingunderwater isoften36bring upasapossible futurefor humanbeings.It seemsto bea greatway37avoid overpopulationor tosurvive whena terribledisaster hits.But whatis itlike tolive underthe wavesInthe1960s,Jacques Cousteausteam builtthe38world firstunderwater lab.It wascalled ConshelfL Twomen livedinsidefor aweek.In1963,Conshelf IIwas setup offthe coastof Sudan.This time,the scientistsspent30days underwater.Since then,there39be manyother underwaterlabs.Aquarius is40only onestill runningtoday.It islocated20metres41海洋的above sealevel inFlorida.Marine scientistDeron Burkepileis oneofthefew whohave workedthere.The firstnight Burkepilespent therewas tenyears ago.The memoryis stillfresh inhis mind.As thescientist swamto同事Aquarius42two ofhis colleagues,it gotdarker anddarker.Its oneof43cool experiencesIve everhad JBurkepilesaid.The pastfew yearshave seengreat improvementsin technology.44,inside underwaterlabs,thingshavent changedmuch.The conditionsare stillterrible.Aquarius onlyhas37square metresof spaceinside it.Hot wateris冷冻干燥保存的,limited.Showers haveto beshort.Food is45most freeze-dried orjam sandwiches.But thefuture ofthe underwaterliving maybe bright.Some companieshave beenworking onunderwater hotels.Thesehotels havelarger rooms,hot showersand elevatorsto takeguests down.。