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7BUnit5Water重点单词：Dropn.滴，v.落下Journeyn.旅程Quantity数量Quality质量Experimentn.实验Freshadj.新鲜的Salt盐Voice声音Add增加Chemical化学制品Through穿过，通过Pipe管，烟斗Valuableadj.宝贵的，很有用Bit少量Bank银行Change不可数n.找给的Return归还，回到Vapour蒸汽Form形成Stir搅拌Continue继续Crystal水晶，结晶reservoir蓄水池重点短语：turnoff关闭Turninto（使）变成Add...to...把···加入abit有点儿（要加上of才可以修饰不可数名词）partof部分pocketmoney零花钱(be)madeupof由··组成dryup干涸重点句型：1.Thenitwastimeforsb.to...到了做某事的时候了(page59)2.Remembernotto...3.Howmuchwateristhere...?4.Howmuchbottlesofwaterarethere...?详细讲解：1.Listentoastoryaboutthejourneyofacoin.(page57)journey指从一个地方出发直达目的的长途旅行HedecidedtomakeajourneytoGuangzhou.trip指休闲或商业目的的短途旅行Hewentonabusinesstrip.travel无直达目的之意，指不同方向的旅行Hecamehomeafteryearsofforeigntravel.2.whenyouexercise,youneedmorewater.(page58)Exercise①为不及物动词，是“锻炼”的意思。②可数名词：练习，体操③不可数名词：锻炼，运动3.twothirds.三分之二(page58)英语中的分数表示：分子用基数词，分母用序数词。分子大于1时，分母要用复数形式。拓展：四分之几一般用quarter表示，二分之一用half表示。如：四分之一：aquarter四分之三：threequarters4.倍数的表达分数：（page68）twice（1）A+be+倍数+as+形容词原级+asB如：mypensarethreetimesasmanyasyours。我的笔是你的三倍（2）A+be+倍数+形容词比较级+thanB如：mymypensaretwicethanyours。我的笔比你的多两倍5.表示every——“每隔···”的表达方法：（1）every+基数词+复数名词：everyfouryears每四年（2）every+序数词+单数名词everyfourthyear每隔三年（3）每隔一··：everyother+单数名词everyotherline每隔一行6.辨析through、over、across三者都有“穿过的”意思①over是从物体表面上方经过，不与物体接触例如：Thebirdflewovertheriver。鸟从河水表面飞过②throngh是从物体中穿过，例如：Theelephantcan'tgothroughthegate.这头象不能从门里穿过。③across从物体表面经过并且有接触例如：Thecarisgoingacrossthebrige汽车正从桥上经过7..Soisthistheendofyourjourney？那么这里是你旅程的终点吗？endn.末尾，结局Attheendof在···后期/末端Attheendofthestreet，youcanseeahotel。Bytheendof到在···结束（表示时间概念）Hecamebackbytheendofthemeeting。Intheend最后，终于atlast，finally。Intheend，wegottothesmallcity。8.Weusehowmanyhowmuchtoaskaboutquantities.use“用”usesthtodosth.用某物做某事人+beusedtodoingsth.某人习惯做某事物+beusedtodosth.某物被用于做某事如：woodisusedtomakepaper。9.Fixadrippingtap。修理滴水的水龙头。（page68）（1）drip指水滴，只能用于液体。Drop不管是做动词还是名词，都有滴下、落下的意思，可以使任何物体，不限于液体。还有一个长得很像的伙伴：droop，指把脑袋低垂下来，一不小心丢了一个o，就把脑袋混丢了：Hedroopedhisheadinshyness.（害羞了把头低下了）（2）fix=repair修道路，机器，以及日常生活用品，如手表，自行车Myfatherisgoodatfixingbrokenwatches。mend修补破损的东西，使其恢复原样，（包括用针线缝补），一般指较小的物品Mum，canyouhelpmemendmysocks？重点语法：如何谈论数量我们可以用（not)much,many,alotof,howmuch,howmany等词来谈论数量，下面让我们一起来学习他们的用法。一、many,much与alotof(lotsof)many,much与alotof(lotsof)三者意义相同，都有许多之意，many修饰可数名词复数形式；much修饰不可数名词；alotof(lotsof)既可以修饰可数名词复数形式；也可以修饰不可数名词。Therearemanystudentsinhisschool.=Therearealotof/lotsofstudentsinhisschool.Ineedmuch/alotoftimetochecktheanswers.二、afew和alittleafew意为“几个”，alittle意为“一点儿”afew修饰可数名词复数形式；alittle修饰不可数名词.afew和alittle都表示肯定意义。Ineedafewapplesandalittlegreentea.Thereareafewbananasandalittlebreadonthetable.注意：few意为“很少”，little意为“几乎没有”，few修饰可数名词复数形式；little修饰不可数名词.few和little均表示否定含义。Thereislittlewaterintheglass.FewstudentstakethetaxitoschoolatGreenHighSchool.三、howmany和howmuch两者都表示多少之意，都用于询问数量。howmany后接可数名词的复数形式，howmuch后接不可数名词。Howmanystudentsarethereinyoursclass?Howmuchmilkdoyouneed?注意：howmuch还可以询问物品的价格。Howmuchisthissweater?四、toomany和toomuchtoomany和toomuch均为太多之意，toomuch修饰不可数名词，toomany修饰可数名词复数形式。Thereistoomuchsmokeintheroom.Therearetoomanyrulesinourschool.注意：muchtoo用作副词，意为“太”，修饰形容词或副词。Yourroomismuchtoodirty.五、toolittle,toofew,notmuch,notmany,no和enoughtoolittle意为“太少”，修饰不可数名词；toofew意为“太少”，修饰可数名词复数形式；notmuch意为“几乎没有”修饰不可数名词；notmany意为没多少“修饰可数名词复数形式;no意为”没有“，修饰可数或不可数名词;enough意为足够的，修饰可数或不可数名词。练习：用所给单词的适当形式填空1Canthesechildrenlookafter___________whentheirparentsarenotathome.(them)2Waterisa___________resource,sowecannotwasteit.(value)3Treescanproducea______________tomaketheirleavestastenastywheninsectswanttoeatthem.(chemistry)4Weshouldnever_____________waterbecauseitisnoteasyforittocometoourflats.(pollution)5About3％ofthewateronEarthiswithout____________(salty)单项选择1.Willyougoforawalkafter_________dinner?a.ab.anc.thed./2.—Carl,whynotgoandhelpyoursisterwatertheflowersthere?—Why________?I’mbusymyself.Jackislyingonthegrassdoingsomething.a.meb.Ic.himd.he3.Mycousinisalwaysbusywithhiswork,Hehas________timetoreadnewspaper.a.littleb.fewc.alittled.afew4.Thereis________sugarinmycoffee.It’stoosweet.a.toomuchb.toomanyc.toofewd.toolittle5.Alicelooked______theroom,butsawnoone.a.aroundb.forc.atd.up6.Ben:WhatdidPeterdrop_________theriver?Alice:Maybeastone.a.inb.intoc.ond.onto7.It’stime________allofustogetreadyforthequiz.a.tob.ofc.ford.at8.There___________twentyattendantsatthecontesttomorrow.a.areb.havec.willhaved.willbe9.Weshould__________theusedwatercleanbeforeitgoesbackintothesea.a.keepb.makec.becomed.turn10.AfterIhadabathinthebathroomthismorning,I_______thetapon,Thismakesthebathroomfullofwater.a.leftb.forgotc.turnedd.switched11.Weallshouldremember________water.a.towasteb.wastingc.notwastingd.nottowaste12.Ifyou________somesalttoaglassofwater,it_______andbecomepartofthewater.a.add......Disappearb.add......willdisappearc.willadd.......disappeard.willadd.......Willdisappear13.WhenIwasinItalylastyear,I________alotoffamouscities.a.visitb.visitedc.visitsd.amvisiting14.Areservoiris______________.a.aplacewherepeoplemakecleanwaterb.aplacewherepeoplekeepriverwatertobeusedlaterc.aplacewherepeopleproducetapwaterforfamilyused.aplacewh