if條件從句課件

Unit

7MemoryGrammarmemorycornerlose-lost-lostimprove-ed-~mentionmethodspellingmindsillymileletterworthspell-spelt-~unlesstrouble(un)liststepcycle記憶力角落失去,喪失改善,提高提到,說到方法拼寫n頭腦可笑的英里字母值得拼寫v除非,要不然困難清單步驟循環(huán)

Henry,PaulaandMilliearestudentsfromRosieBridgeSchool.Theywanttohelpotherstudentsi_________theirm_________,sotheywritesomearticlesfortheschoolnewspaper.Henrythinksapictureisw_______athousandwords,sohem__________agreatway—toimagineapictureinyourm_______.Itwillbebetterifthepictureisstrangeors_______.Torememberthes_________ofaword,Paulahasagoodm_______—tomakeashortsentencewitheachl_______oftheword.Forexample,sheuses“Bigelephantscanalwaysunderstandsmallelephants”torememberhowtos_______theword“because”. Milliethinksit’seasytoforgetsomethingu__________youunderstanditwell.Ifyouhavet________rememberingthel_______ofs_______ofthewaterc_______,you’dbetterunderstandhowitworksfirst.

mproveemoryorthentionsillyindpellingethodetterpellnlessroubleisttepsycle1.這場表演不值得看.Thisshow_________________________.2.我在學(xué)習(xí)英語方面沒有困難.I____________________________English.3.你知道如何提高記憶力么？

Doyouknow_________________ourmemory?4.如果他撒謊，他的父母就會懲罰他.Ifhe______alie,hisparents____________him.5.除非你放棄，要不然你就會成功.Unlessyou_____________,you_____________.isn'tworthseeinghavenotroublelearning

howtoimprove

tellswillpunishgiveupwillsucceedUnit7Grammar

if/unless

引導(dǎo)的條件狀語從句

(ConditionalSentences)Review“If”fathersonTheyaregoingfishingnow.Ifitrains,whatwillhappen?Ifitrains,theywillgohome.Iftheboyfallsintotheriver,Whatwillhappen?Iftheboyfallsintotheriver,hisfatherwillsavehim.Ifhisfatherfallsintotheriver,whatwillhappen?Ifhisfatherfallsintotheriver,hewillasksomeoneforhelp.Iftheygetsomefish,whatwillhappen?Iftheygetsomefish,theywilleatthem.iftheydon’tgetanyfish,whatwillhappen?

Iftheydon’tgetanyfish,theywill

beverysad.Review:條件狀語從句：If1.定義:在if引導(dǎo)的從句的條件下，主句可能會發(fā)生的結(jié)果。2.If引導(dǎo)的部分是_____,剩余部分是_______(主句/從句),if從句在前_______與主句隔開3.

時態(tài)口訣:__________.主將從現(xiàn)1.如果他努力學(xué)習(xí)，他將會通過考試。

Ifhe_______hard,he________theexam.=He_________theexamifhe________hard.用逗號主句studieswillpass①studieswillpass從句PracticeIf

she,walktoschoolwillbelateIfshewalkstoschool,shewillbelate.Shewillbelateifshewalkstoschool.If

itraintomorrowwill

stayathomeIfitrainstomorrow,hewillstayathome.Hewillstayathomeifitrainstomorrow.If

she,eattoomuch

will

beveryfatIfsheeatstoomuch,shewillbeveryfat.shewillbeveryfatifsheeatstoomuch.If

it,notraintomorrow,Ifitdoesn'traintomorrow,wewillgoonaschooltrip.willwe,goonaschooltripWewillgoonaschooltripifitdoesn'traintomorrow.New“If”Ifyouheatice,it______________.turnsintowaterwillturninto/turnsintoOil_______ifyoupouritonwater.willfloat/floatsfloatsWater______ifyouheatit.boils/willboilboilsNew--條件狀語從句：If1.

定義:

在If引導(dǎo)的從句條件下，主句必然會發(fā)生的結(jié)果(自然規(guī)律，客觀事實/真理)；

2.從句在前__________與主句隔開；3.時態(tài)口訣_________________用逗號2.

如果我把玻璃杯扔掉，它就會摔碎.

IfI_______aglass,it________.It________ifI________aglass.dropbreaks②breaksdrop從現(xiàn)主現(xiàn)PracticeIf

I,putsaltintowaterdisappearIfIputsaltintowater,itdisappears.ItdisappearsifIputsaltintowater.If

youtakefishoutofwaterdieIfyoutakefishoutofwater,itdies.Itdiesifyoutakefishoutofwater.If

youdropaglassbreakIfyoudropaglass,itbreaks.Itbreaksifyoudropaglass.FinishA1inyourEnglishbook.1.如果他說謊（tellalie），他父母就會懲罰他.2.如果他不努力學(xué)習(xí)，他就不會成功.3.如果你足夠細心，你就不會再犯錯誤。

4.如果你把糖放進水里，它就融化了(melt)5.如果明天天氣好的話，我們就去野餐。Ifhetellsalie,heparentswillpunishhim.Ifhedoesn'tstudyhard,hewon'tsucceed/Ifhedoesn'tstudyhard,hewon'tbesuccessful.Ifyouarecarefulenough,youwon'tmakemistakesagain.Ifyouputsugarintowater,itmelts.Ifitissunny/finetomorrow,wewillhaveaicnic.Conditionalsentenceswith“unless”條件狀語從句：UnlessUnlessyouunderstandthingswell,youwillforgetitquickly.Themainclausetalksaboutthelikelyresult.(主句)

Theunless-clause

talksaboutapossibleaction(從句)

時態(tài):主將從現(xiàn)wecanalsoputtheunless-clauseafterthemainclause.Mainclauseunlessclause當unless引導(dǎo)的從句在前時，___（用/不用）逗號與主句隔開當unless引導(dǎo)的從句在后時，則_____（用/不用）逗號與主句隔開；用不用youwillforgetitquicklyunlessyouunderstandthingswell.1.unless:_______(詞性),意思_____________2.

Unless引導(dǎo)的部分是_____,剩余部分是_______(主句/從句),unless從句在前_______與主句隔開3.

時態(tài)口訣:__________.從現(xiàn)主將從句連詞除非...要不然條件狀語從句：Unless

主句用逗號Unlessshewearsmoreclothes,

shewillfeelcold.Unlesswearmoreclothesfeelcold

Shewillfeelcoldunlessshewearsmoreclothes.

Unlesshegoestosleepearly,

hewillfeelsleepy.UnlessgotosleepearlyfeelsleepyHewillfeelsleepyunlesshegoestosleepearly.

Unlesshelistenstoteacherscarefully

,

hewillfailtheeaxm.UnlesslistentocarefullyfailtheexamHewillfailtheeaxmunlesshelistenstoteacherscarefully.

Conditionalsentences“unless&If”條件狀語從句：Unless&ifUnlessitrains,wewillhaveapicnicoutside.=Ifitdoesn'train,wewillhaveapicnicoutside.

Unlesstheyhurryup,theywon'tcatchthetrain.=Iftheydon'thurryup,theywon'tcatchthetrain.Unlessitrains,wewillhaveapicnicoutside.=Ifitdoesn'train,wewillhaveapicnicoutside.

Unlesstheygetupearly,theywon'tcatchthetrain.=Iftheydon'tgetupearly,theywon'tcatchthetrain.結(jié)論:

Unless的從句____________(don't/doesn't/ben't)

主句不變=If…not從句1.如果明天不下雨，我們就去遠足(gohiking)。Ifit_______________________,we__________.=Wewillgohiking__________________2.如果你不細心，你就會犯同樣的錯誤.Ifyou______________,you________________________.=_____________________,you

________________________.Unless=If…notunlessitrainstomorrow.doesn’traintomorrowarenotcarefulUnlessyouarecarefulwillmakethesamemistakeswillgo

hikingwillmakethesamemistakesUnless=If…not3.除非天下雨，否則是走路去上學(xué)。Hewill_____________onfootifit___________.=_____________,hewill___________onfoot.4.如果你現(xiàn)在不走，你就趕不上火車了。

Ifyou________________,you____________thetrain.=_____________________,you_____________thetrain.gotoschooldon’tleavenowUnless

it

rainsgotoschoolUnlessyouleavenowwon’tcatchwon’tcatchdoesn’traingivethemadvicebyusing

unless/if....notFreetalkimprovehandwritinglosemarksinexamsUnless/If…notUnlessheimproveshishandwriting,hewilllosemarksinexams.Ifhedoesn'timproveshishandwriting,hewilllosemarksinexams.Unlesshegoestobedearly,hewillbetired

Ifhedoesn'tgotobedearly,hewillbetired

gotobedearlyfeeltiredUnlesshebrusheshisteetheveryday,

histeethwillgetbad.

Ifhedoesn'tbrushhisteetheveryday,

histeethwillgetbad.brushhisteethgetbadUnlesshelistenstotheteachercarefully,

theteacherwillpunishhim.

Ifhedoesn'tlistentotheteachercarefully,

theteacherwillpunishhim.

listentocarefully,punishhimSummary條件狀語從句:if從句unless從句從現(xiàn)主將從現(xiàn)主現(xiàn)時態(tài)口訣:個人主觀意愿客觀事實客觀真理

Unless從句=If....not從句,

主句不變

IfIgetupat9:00,_______________Ifyouplattheseedsintheoil,______________________Unlessyoutakeanumbrellawithyou,________________.Iwillbelateforschool.theygrow.youwillgetwet.=If

youdon'ttakeanumbrellawithyou,youwillgetwet.Exercises一、用動詞的正確形式填空。1.Ifyou______(heat)water,it______(turn)intosteam.2.What___________(happen)ifcomputers_____(do)allourjobs?3.Ifthere________(be)moretrees,theair_______(be)fresher.4.Theboy___________(not,pass)theexamunlesshe_______(listen)tohisteachercarefully.5.Ifit____________(not,rain)tomorrow,we_______(go)tohaveapicnic.heatturnswillhappendoarewillbewon'tpasslistensdoesn'trainwillgo6.He_______(help)youifhe_____(be)free.7.IfMary______________(notstudy)hard,she________(fail)theexam.8.Tim___________(miss)thefirsttrainunlesshe______(leave)homeat5:00am.9.You____________(not,study)wellunlessyou__________(work)hardbothatschoolandathome.10.Ifyou______(put)sweetintowater,they_____________.(disappear)listensisdoesn'tstudywillfailwillmisswon'tstudyleavesworkputdisappears二、單項選擇1.Youwon'tgethighmarks_____youstudyhard.A.unlessB.ifC.afterD.though2.Ifyou____metal(鐵),it______.A.heat,meltB.heats,willmeltC.heat,meltsD.heats,melts3.Ifhe______faster,he______thereontime.A.runs,getsB.willrun,willgetC.willrun,getsD.runs,willget

4.Ifit____tomorrow,we______forapicnic.A.won'train,wil