Unit5Water重难点词组1.dropn水滴v掉下；落下Wherearethesedropsofwaterfrom?Becarefulnotdroptothatplate.2.journeyn旅行；旅程trip旅行；旅程Didyouhaveagoodjourney?3.quantityn数量amount数量Ionlyboughtasmallquantityofcheese.4.experimentn实验；试验v做实验；做试验Theyhavetodoexperimentstofindoutifthedrugissafeforhumans.Idon’tthink’sitrightexperimenttoonanimals.5.freshadj淡的；无盐的Theislandisshortfreshofwater.6.salt盐nsaltyadj咸的Howmuchsaltdidyouputinthesoup’stoo?Itsalty.7.onadv表示已连接、处于工作状态或使用中()Allthelightswereonoffadv(表示已断开、处于关闭状态或停用中)on的常见用法主要有：a.作方位介词，表示“在…..上”。Yourbookisonthetable.b.作时间介词，表示“在（某一天）。Mybirthdayison6May/Monday.c.与交通工具和出行方式连用。Hegotonthetrain.Icamehereonfoot.d.表示持续。Youcan’tstophere-driveone.“通过；使用”IboughtitontheinternetIwasonthephonetoJaniarightnow.f.“关于”I’mreadingabookoncars.g.“穿上；戴上”Putyourcoatonh.“发生”What’sonatthecinema?8.voicen嗓音；说话声CanyourecognizethevoiceWho’s?thatatthedoor?9.reservoirn水库ThereareseveralreservoirsaroundBeijing.10.addv增加；添加;加Theyaddalittlesugartothemixture.Unit5WaterAdd2and3.Youget511.chemicaln化学品adj化学的Shampooisnotallowedtobeusedatthebeachbecausechemicalsthewillpollutethesea.Thestudentsaredoingachemicalexperiment.chemistryn化学chemistn化学家；药剂师12.throughprep通过；穿过Wecandrivethroughthetunnelinfiveminutes.Theywalkedthroughtheshoptothemainroad.13.pipen管道Watercomesthroughthepipesundertheroadtoourhomes.14.valuableadj宝贵的；很有用的valuen价值Cleanwaterisquitevaluableineverypartoftheworld.15.cover“覆盖”Canyoucoverthefoodandputitinthefridge?uncover“揭开…..的盖子；移去…..的覆盖物”16.fallfrom“从…..掉落”Whenautumncomes,leavesstartfalltofromtrees.17.turnoff“关掉；关闭”Doyoumindturningoffthelightinthelivingroom?Closethedoor,please.18.It’stime(forsomebody)todosomething.“是该（某人）做…..的时候了；（某人）该做……了”It’stimeforEddietodohishomework.It’stimetogotobed.19.add…to…“在…中加入……”Addsomesugartotheflour.20.theend…of“…..的结尾；….的终点”.Don’ttellmetheendofthestory.Iwanttoreaditmyself.21.remembernottodosomething“记得不要做某事”Youmustremembernottopollutetheenvironment.remember一词主要有两种用法rem