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1、Unit4AmazingScienceTopic1Whenwasitinvented?SectionC課件1AmazingScienceWouldyouliketosaysomethingaboutthem?LookandunderstandRobots—OurServantsintheFuture?Hello!Weareyourfriends.Wecanhelpyoudodangerousanddifficultwork.Haveyoueverseenarobot?Wouldyouliketodescribeitforus?Findandcircletheword
2、sin1aaccordingtothefollowingmeanings,thenwritethemdown.1.totellsomebodythatsomethingbadordangerousmayhappensothattheycanpreventit()2.tomakesomethinghappenorappear（ ?。?.apersonwhoispaidtodohouseworkforafamily（ ）4.sureandconfident,withoutanydoubts（ ?。?.tobehaveinaspecialwaytowardssom
3、ebodyorsomething()warncauseservantcertaintreat探究學習1.Nooneknowsforcertain.沒有人確切地知道。noone與nonea.noone用來指人，其后不能接of短語，用做主語時，謂語動詞用單數(shù)。Noonelikesapersonwithbadmanners.b.none既能指人又能指物，其后可以接of短語，當of后是可數(shù)名詞復數(shù)時，謂語動詞用單、復數(shù)均可。Noneofthestudentsis/areintheclassroom.c.特別注意：①——Howmanypeoplearethereinthatr
4、oom?——None.②——Whoisinthatroomnow?——Noone.——Howmuchwillthecarcost？——Ican’tsayforcertain.forcertain確切地2.allthetime=always一直，總是3.besurprisedat/by…對……感到驚訝besurprisedtodosth.Theboylistenedtotheradioallthetime.Theforeignvisitorsweresurprisedatthegreatwonders.IwassurprisedtohearIhadpassedthee
5、xam.4.Oncerobotscanthinkforthemselves,problemsmayappear.once在這用作連詞，意為“一旦……就……”,引導時間狀語從句。thinkforoneself獨立思考Onceyougetusedtoit,youwilllikeit.Ioftenteachmystudentstothinkforthemselves.5.Onescientistwarnsthatifrobotsstarttothinkforthemselves,theywillnolongerwanttobeourservants,butourmaste
6、rs.a.warnwarnsb.(not)todo.告誡某人(不）做某事warnsb.about/ofsth.警告某人注意某事b.nolonger=not…anylongernomore=not…anymore6.Theymighttreatusaswenowtreatpets.他們可能會像我們現(xiàn)在對待寵物那樣對待我們。a.might是may的過去式，可用于指過去，也可用于指現(xiàn)在，但語氣緩和、委婉。b.treat…as…以……方式對待……/把……看做……7.bemeanttodosth.應該做某事8.inthemedicalfield在醫(yī)學領(lǐng)域field有“學科，領(lǐng)
7、域，專業(yè)”等含義9.makeacontribution/contributionsto…為……做貢獻注意：makeacontribution/contributionstodoingsth.10.haveaneffect/effectson…對……有影響Ithinkthepolicearemeanttoprotectpeople.Hemadegreatcontributionstoscience.Weshouldmakeacontributiontoprotectingtheenvironment.Playingcomputergamestoomuchhasab
