2023学年完整公开课版系列Memory4

GrammarUnit7Memory1.Tolearntheconditionalsentences2.Tolearnif…notandunlessobjectivesConditionalsentences(2)Ifyoumakethepicturebig,strangeorsilly,youwillrememberitbetter.ReviewthesimplepresenttensethesimplefuturetenseWehavealreadylearnttouseconditionalsentencestotalkaboutprobableresults.ConditionalsentencesIfI’mhungry,Iwill______________.IfI’m

tired,Iwill_____________.eatsomefoodhavearestLookandsayReviewIfI’mill,__________________.IwillseeadoctorIfI’mlate,_______________.Iwillsaysorry

Ifitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,_________________.I’llplaybasketballdoesn’trainIfyoutakeafishoutofwater,_______.itdiesIfyouswitchoffthelight,_____________________.theroomsbecomesdarkTrytofinishthefollowingsentences.theresultthatwillcertainlyhappentheresultthatwillcertainlyhappenIfyouputsaltintowater,____________.Ifyouheatice,__________________itdisappearsitturnsintowater.apossibleactiontheresultthatwillcertainlyhappenapossibleactiontheresultthatwillcertainlyhappenif引导的条件状语从句当表示客观事实、结果时，if条件句的主句和从句都用一般现在时。If从句(条件)主句(结果)一般现在时一般现在时Ifthetemperatureisbelowzero,waterturnsintoice.Ifyouthrowsomethingintotheair,Itfallsbacktotheground.if从句可以放在句首，也可以放在句末。如果把if从句放在句首，常用逗号将其与主句隔开。如：Waterturnsintoiceifthetemperatureisbelowzero.=Ifthetemperatureisbelowzero,waterturnsintoice.注意：if引导的条件状语从句通常不用一般将来时。在需要表达将来含义时，一般用现在时表示。Readtheseif-clausesanddrawlinestomatchthemwiththeresults.A1Inpairs,makeconversationsaboutthesentencesinA1onpage103.A2S1:Whathappensifyouswitchoffthelamp?S2:Theroombecomesdark.S1:Areyousure?S2:Ofcourse,I’msure.Ifyouswitchoffthelamp,theroombecomesdark.S1:Whathappensifyouputwoodintowater?S2:Itfloats.S1:Areyousure?S2:Ofcourse,I’msure.Ifyouputwoodintowater,itfloats.Completethesesentenceswiththewordsinbrackets.A3Ifyou____ice,__________water.(turns/heat/it/into)Ifyou____steam,__________water.(into/cool/turns/it)Oil___________________water.(on/floats/pour/it/you/if)Water______________it.(you/heat/boils/if)heatitturnsintocoolitturnsintofloatsifyoupouritonboilsifyouheatif...notandunlessHaveALk1.Ifyoudonotgetenoughsleepeverynight,youwillnotrememberthingswell.2.Unlessyougetenoughsleepeverynight,youwillnotrememberthingswell.3.Youwillforgetsomethingveryquicklyunlessyouunderstanditwell.4.Youwillbelateforschoolifyoudonotleavenow.5.Unlessyouimproveyourhandwriting,youwilllosemarksintheexam.1.___youdo____getenoughsleepeverynight,you________________thingswell.2.______you____enoughsleepeverynight,you_______________thingswell.3.You_________somethingveryquickly______you__________itwell.4.You_________forschool__you___________now.5.______you________yourhandwriting,___________marksintheexam.notIfwillnotrememberUnlessgetwillnotrememberwillforgetunlessunderstandwillbelateifdonotleaveUnlessimproveyouwilllosegoReady?Ifyoudonotworkhard,youwillnotsucceed.如果你不努力，你就不会成功。=Unlessyouworkhard,youwillnotsucceed.除非你努力工作，否则你不会成功。unless意为“除非”，和if…not(如果……不……)的意思相近，且两个结构通常可以互换使用。在unless引导的从句里，通常用现在时表示将来。如：I’llnotattendthepartyunlessheinvitesme.除非他邀请我，否则我不会参加这个派对。Unlessyouhavegoodidea,I’lltakehisadvice.除非你有更好的主意，否则我将采取他的建议。注意：unless用于引出某事发生或成立所必需的条件。如：除非你能做到，否则不要随便许诺。Youshouldnotpromiseanythingunlessyoucandoit.1.如果明天不下雨，我们就去远足。

Ifit_____________________,wewillgohiking.=Wewillgohiking___________________________.unlessitrainsdoesn’traintomorrowtomorrowExercise用unless和if…not完成句子。2.除非天下雨，他通常是走路去上学。

Heusually_____________onfootifit___________.=_____________,heusually___________onfoot.3.如果你现在不走，你就赶不上火车了。

Ifyou______________,you__________thetrain.=___________________,you__________thetrain.goestoschoolUnlessitrainsgoestoschooldoesn’traindon’tleavenowUnlessyouleavenowwon’tcatchwon’tcatchDrawlinestomatchthebeginningofthesentencesinColumnAwiththeendingsinColumnB.(P105)B1Rewritethefollowingsentenceswithunless.(P105)B22.Youwillgetatoothacheifyoudonotbrushyourteetheveryday.Unlessyoubrushyourteetheveryday,youwillgetatoothache./Youwillgetatoothacheunlessyoubrushyourteetheveryday.3.Thisroomwillgetveryhotifyoudonotopenthewindow.4.Ifyoudonotclosethatwindow,flieswillgetin.Unlessyouopenthewindow,thisroomwillgetveryhot./Thisroomwillgetveryhotunlessyouopenthewindow.Unlessyouclosethatwindow,flieswillgetin./Flieswillgetinunlessyouclosethatwindow.5.Iwillleavethisrestaurantifthewaiterdoesnotcomesoon.Unlessthewaitercomessoon,Iwillleavethisrestaurant./Iwillleavethisrestaurantunlessthewaitercomessoon.条件状语从句:if从句unless从句主将从现主现从现时态口诀:将来客观事实习惯Reviewif引导的条件状语从句歌：

if条件句不一般，几个要点记心间。条件句放在前，逗号要放句中间。条件句表可能，主句多用将来时；条件句表事实，主句常用现在时。if条件句有特点，现在时把将来替；这个规则要牢记!1.Ifhe_____(come),I______(tell)himaboutthenewsatonce.2.Youcan’tbuytheiPadunlessyou_____(have)enoughmoney.3.Amouse_____(run)awayquicklyifit_____(see)acat.4.Ifit____________(notsnow)tomorrow,we______(go)sightseeing.5.Youcan’ttakepartintheactivityunlessyou___(be)amemberoftheclub.comeswilltellhaverunsI.根