Chapter4Endangeredanimals语法（课件）新版香港朗文英语六年级下册

Book6BChapter4KeyStructures

Therefore

unlessPeopledumpwastewaterthatcontainschemicalsintotheharbour.Dolphinsgetsickanddie.Wecanuse‘Therefore’tolinkupacauseandaresult.ThereforePeopledumpwastewaterthatcontainschemicalsintotheharbour.Thereforedolphinsgetsickanddie.Wecanuse‘Therefore’tolinkupacauseandaresult.ThereforePeopledumpwastewaterthatcontainschemicalsintotheharbour.Thereforedolphinsgetsickanddie.CauseResultWeuse‘Therefore’tostartanewsentenceandputitinfrontoftheresult.Peopledestroyforeststomakeroads.ThereforePeopledestroyforeststomakeroads.Thereforetherearenotenoughtreesfororangutanstolivein.Therearenotenoughtreesfororangutanstolivein.Peoplehuntanimalsfortheirbodyparts.ThereforePeoplehuntanimalsfortheirbodyparts.Thereforethereareveryfewleftinthewild.Wemuststopthisbadaction!Thereareveryfewleftinthewild.Wecanuse‘unless’totalkaboutconditions.unlessPeoplewillkeephuntinganimalsfortheirbodypartsunlesswestopwearingfurcoats.Peoplehuntanimalsfortheirbodyparts.Thereforethereareveryfewleftinthewild.Wemuststopthisbadaction!Whatcanwedoifwedon’twantthisresult?Wemuststopwearingfurcoats!‘keep’+-ingunless=exceptifIfwedothis……thenthiswon’thappen.Let’slookatwhatpeopledotodolphinsagain.Howcanwesavethem?unlessDolphinswillbeendangeredunlesswestoppollutingtheenvironment.Peopledumpwastewaterthatcontainschemicalsintotheharbour.Thereforedolphinsgetsickanddie.Wemuststoppollutingtheenvironment!=Dolphinswillbeendangered!KeyStructuresPeopledestroybambooforests.Thereforeeatturtleeggs.thereisnotenoughfoodforpandas.fewerseaturtlesareborneachyear.1.Choosethecorrectanswers.PracticePeoplesellrareanimalsaspets.thereareveryfewoftheseanimalsleftinthewild.ThereforePeoplewillkeepcatchingtheserareanimals westopbuyingthem.unlessThereforeunless2.Choosethecorrectanswers.PracticeIdidn’tstudyformyexamination.Iamnowverynervousaboutit.ThereforeWedon’tusuallyturnontheair-conditioner

theweatherisveryhot.unlessThereforeunless3.Rephrasethesentencesusing‘therefore’.PracticeAlotofwildanimalslosetheirhomes.Why?Becausepeopledestroyforeststobuildroadsandhouses.Peopledestroyforeststobuildroadsandhouses.Thereforealotofwildanimalslosetheirhomes.4.Rephrasethesentencesusing‘therefore’.PracticeFishermencutofffinsfromalotofsharkseachyear.Why?Becausealotofpeoplelikeeatingsharkfinsoup.Alotpeoplelikeeatingsharkfinsoup.Thereforefishermencutoffthefinsfromalotofsharkseachyear.5.Jointhesentencesusing‘unless’.PracticePeopledumpharmfulwastesintothesea.Alotofseaanimalswilldieandbecomeendangered.Alotofseaanimalswilldieandbecomeendangeredunlesspeoplestopdumpingharmfulwastesintothesea.6.Jointhesentencesusing‘unless’.PracticePeoplecreatesomuchrubbish.Landfillswillbecomefullinthenearfuture.Landfillswillbecomefullinthenearfutureunlesspeoplestopcreatingsomuchrubbish.7. Lookatthesentencesbelow.Writeashortparagraphusing‘Therefore’and‘unless’.PracticePeoplehunttigersfortheirbodypartsFewtigersareleftinthewildPeoplebuymedicinemadefromtigers’bodypartsPeople__________________________.___________________________________Peoplewillkeep_______tigers_______people___________________________________________hunttigersfortheirbodypartsThereforefewtigersareleftinthewild.huntingunlessstopbuyingmedicinemadefromtigers’bodyparts.8. Lookatthesentencesbelow.Writeashortparagraphusing‘Therefore’and‘unless’.PracticeAirishighlypollutedinalotofmajorcitiesManypeoplediefromlungproblemseachyearPowerplantsemitalotofdangerousfumesintotheairPeopleusesomuchelectricityAir_______________________________.______________________________________________.Powerplantswillkeep____________________________________________________