八年级英语上册 Unit 7 Memory Grammar课件 （新版）牛津深圳版.ppt

unit7memory grammar aconditionalsentenceswehavealreadylearnttouseconditionalsentencestotalkaboutprobableresultswecanalsouseconditionalsentencestotalkaboutresultsthatwillcertainlyhappen theif clausetalksaboutapossibleaction ifyouputsaltintowater itdisappears themainclausetalksabouttheresultthatwillcertainlyhappen workouttherulewhenweuseaconditionalsentencetotalkaboutsomethingthatwillcertainlyhappen bothverbsshouldbeinthesimplepresenttense thesimplefuturetense thingstorememberwecanalsoputtheif clauseafterthemainclause saltdisappearsifyouputitintowater a1readtheseif clausesanddrawlinestomatchthemwiththeresults a2inpairs makeconversationsaboutthesentencesina1onpage103 followingtheexample s1 whathappensifyoutakeafishoutofwater s2 itdies s1 areyousure s2 ofcourse iamsure ifyoutakeafishoutofwater itdies a3 completethesesentenseswiththewordsinbrackets 1ifyou ice water turns heat it into heat itturnsinto 2 ifyou steam it water into cool turns it 3 oil water on floats pour if you if 4 water it you heat boils if cool itturnsinto floatsifyoupouriton boilsifyouheat bif notandunlessthewordunlesscanmeanif not forexample thetwosentencesbelowhavethesamemeaning ifyoudonotgetenoughsleepeverynight youwillnotrememberthingswell unlessyougetenoughsleepeverynight youwillnotrememberthingswell thingstorememberwecanalsoputtheif clauseandtheunless clauseafterthemainclause youwillbelateforschoolifyoudonotleavenow unlessyouleavenow b1drawlinestomatchthebeginningsofthesentencesincolumnawiththeendingsincolumnb b2rewritethefollowingsentenceswithunless 1ifyoudonotimproveyourhandwriting youwilllosemarksintheexam unlessyouimproveyourhandwriting youwilllosemarksintheexam youwilllosemarksintheexamunlessyouimproveyourhandwriting 2youwillgetatoothacheifyoudonotbrushyourteetheveryday youwillgetatoothacheunlessyoubrushyourteetheveryday unlessyoubrushyourteetheveryday youwillgetatoothache 3 thisroomwillgetveryhotifyoudonotopenthewindow thisroomwillgetveryhotunlessyouopenthewindow unlessyouopenthewindow thisroomwillgetveryhot 4ifyoudonotclosethatwindow flieswillgetin unlessyouclosethatwindow flieswillgetin flieswillgetin unlessyouclosethatwindow 5 iwillleavethisrestaurantifthewaiterdoesnot