if條件從句課件

Unit

7MemoryGrammarUnitMemoryGrammar1memorycornerlose-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)memorycornerlose-lost-lostimpr2

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.

mproveemoryorthentionsillyindpellingethodetterpellnlessroubleisttepsycleHenry,PaulaandMilliear31.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

tellswillpunishgiveupwillsucceed1.這場表演不值得看.isn'tworth4Unit7Grammar

if/unless

引導(dǎo)的條件狀語從句

(ConditionalSentences)Unit7Grammar5Review“If”Review“If”6fathersonTheyaregoingfishingnow.fathersonTheyaregoingfishin7Ifitrains,whatwillhappen?Ifitrains,theywillgohome.Ifitrains,whatwillhappen?8Iftheboyfallsintotheriver,Whatwillhappen?Iftheboyfallsintotheriver,hisfatherwillsavehim.Iftheboyfallsintotherive9Ifhisfatherfallsintotheriver,whatwillhappen?Ifhisfatherfallsintotheriver,hewillasksomeoneforhelp.Ifhisfatherfallsintother10Iftheygetsomefish,whatwillhappen?Iftheygetsomefish,theywilleatthem.Iftheygetsomefish,Ifthey11iftheydon’tgetanyfish,whatwillhappen?

Iftheydon’tgetanyfish,theywill

beverysad.iftheydon’tgetanyfish,wh12Review: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Review:條件狀語從句：If1.定義:在if引導(dǎo)的從13PracticeIf

she,walktoschoolwillbelateIfshewalkstoschool,shewillbelate.Shewillbelateifshewalkstoschool.PracticeIf

she,walktoschoo14If

itraintomorrowwill

stayathomeIfitrainstomorrow,hewillstayathome.Hewillstayathomeifitrainstomorrow.If

itraintomorrowwill

sta15If

she,eattoomuch

will

beveryfatIfsheeatstoomuch,shewillbeveryfat.shewillbeveryfatifsheeatstoomuch.If

she,eattoomuch

will

be16If

it,notraintomorrow,Ifitdoesn'traintomorrow,wewillgoonaschooltrip.willwe,goonaschooltripWewillgoonaschooltripifitdoesn'traintomorrow.IfIfitdoesn'traintomorrow,17New“If”New“If”18Ifyouheatice,it______________.turnsintowaterwillturninto/turnsintoIfyouheatice,it________19Oil_______ifyoupouritonwater.willfloat/floatsfloatsOil_______ifyoupouriton20Water______ifyouheatit.boils/willboilboilsWater______ifyouheatit.bo21New--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)New--條件狀語從句：If1.定義:在If引導(dǎo)的從句條22PracticeIf

I,putsaltintowaterdisappearIfIputsaltintowater,itdisappears.ItdisappearsifIputsaltintowater.PracticeIf

I,putsaltintow23If

youtakefishoutofwaterdieIfyoutakefishoutofwater,itdies.Itdiesifyoutakefishoutofwater.If

youtakefishoutofwate24If

youdropaglassbreakIfyoudropaglass,itbreaks.Itbreaksifyoudropaglass.If

youdropaglassbreakIf25FinishA1inyourEnglishbook.FinishA1inyourEnglishbook261.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(xì)心，你就不會再犯錯誤。

4.如果你把糖放進(jìn)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.1.如果他說謊（tellalie），他父母就會懲罰他.27Conditionalsentenceswith“unless”Conditionalsentences28條件狀語從句：UnlessUnlessyouunderstandthingswell,youwillforgetitquickly.Themainclausetalksaboutthelikelyresult.(主句)

Theunless-clause

talksaboutapossibleaction(從句)

時態(tài):主將從現(xiàn)條件狀語從句：UnlessUnlessyouunders29wecanalsoputtheunless-clauseafterthemainclause.Mainclauseunlessclause當(dāng)unless引導(dǎo)的從句在前時，___（用/不用）逗號與主句隔開當(dāng)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.wecanalsoputtheunless-cla301.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1.unless:_______(詞性),意思____31Unlessshewearsmoreclothes,

shewillfeelcold.Unlesswearmoreclothesfeelcold

Shewillfeelcoldunlessshewearsmoreclothes.

Unlessshewearsmoreclothes,32Unlesshegoestosleepearly,

hewillfeelsleepy.UnlessgotosleepearlyfeelsleepyHewillfeelsleepyunlesshegoestosleepearly.

Unlesshegoestosleepearly,33Unlesshelistenstoteacherscarefully

,

hewillfailtheeaxm.UnlesslistentocarefullyfailtheexamHewillfailtheeaxmunlesshelistenstoteacherscarefully.

Unlesshelistenstoteachers34Conditionalsentences“unless&If”條件狀語從句：Unless&ifConditionalsentences條件狀語從句：Un35Unlessitrains,wewillhaveapicnicoutside.=Ifitdoesn'train,wewillhaveapicnicoutside.

Unlessitrains,wewil36Unlesstheyhurryup,theywon'tcatchthetrain.=Iftheydon'thurryup,theywon'tcatchthetrain.Unlesstheyhurryup,theyw37Unlessitrains,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Unlessitrains,wew381.如果明天不下雨，我們就去遠(yuǎn)足(gohiking)。Ifit_______________________,we__________.=Wewillgohiking__________________2.如果你不細(xì)心，你就會犯同樣的錯誤.Ifyou______________,you________________________.=_____________________,you

________________________.Unless=If…notunlessitrainstomorrow.doesn’traintomorrowarenotcarefulUnlessyouarecarefulwillmakethesamemistakeswillgo

hikingwillmakethesamemistakes1.如果明天不下雨，我們就去遠(yuǎn)足(gohiking)。U39Unless=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’trainUnless=If…not3.除非天下雨，否則是走路去40givethemadvicebyusing

unless/if....notFreetalkgivethemadvicebyusingFre41improvehandwritinglosemarksinexamsUnless/If…notUnlessheimproveshishandwriting,hewilllosemarksinexams.Ifhedoesn'timproveshishandwriting,hewilllosemarksinexams.improvehandwritingUnless/If42Unlesshegoestobedearly,hewillbetired

Ifhedoesn'tgotobedearly,hewillbetired

gotobedearlyfeeltiredUnlesshegoestobedearly,h43Unlesshebrusheshisteetheveryday,

histeethwillgetbad.

Ifhedoesn'tbrushhisteetheveryday,

histeethwillgetbad.brushhisteethgetbadUnlesshebrusheshisteethev44Unlesshelistenstotheteachercarefully,

theteacherwillpunishhim.

Ifhedoesn'tlistentotheteachercarefully,

theteacherwillpunishhim.

listentocarefully,punishhimUnlesshelistenstotheteach45Summary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Summary條件狀語從句:if從句unless從句從現(xiàn)主將46

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

youdon'ttakeanumbrellawithyou,youwillgetwet.IfIgetupat9:00,Ifyoup47ExercisesExercises48一、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'trainwillgo一、用動詞的正確形式填空。heatturnswillhap496.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'tstudyleavesworkputdisappears6.He_______(help)youifh50二、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

二、單項選擇514.Ifit____