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Unit51.do/give/offer/carryout/performfirstaidonsb对…实施急救withtheaid/helpof在…的帮助下aidsbwithsth=aidsbindoingsth帮助…做…2.fallill/sick生病3.getinjured受伤4.therearetimeswhen有些时候thereisatimewhen曾经有一段时间5.saveone’slife救某人的命6.actas扮演充当7.beharmfulto=doharmto=bebadfor对……有害8.senseofsth……的感觉senseoftouch触觉commonsense常识makesense有意义，说得通makesenseof理解，明白9.avarietyof=varietiesof=kindsof=various各种各样的10.be/getcloseto接近，靠近11.affect=haveaneffect/influenceon影响12.adayortwo=oneortwodays一两天13.include+部分contain+整体/成分includingsth=sthincluded14.foramoment一会atthemoment此时此刻themoment一…就…15.take+sb+时间+todo花费某人时间做16.attheedgeof在……边缘17.stick…to…=把…粘在stick…on…stickto坚持，遵守get/bestuck卡住，陷入困境18.takeoff成功，起飞，脱掉19.clothes衣服（可数）clothing衣服（不可数）cloth布—cloths(用作某种用途)布20.squeeze…outof/from…从…榨出…21.overandoveragain=againandagain一次又一次22.getinfectedwith感染上23.inplace在适当的位置outofplace不在适当的位置inplaceofsb=inone’splace代替某人takeplaceof=takeone’splace代替24.situp坐起来熬夜=stayup25.itisvitalforsbtodosthitisvitalto/forsb对…很重要26.knockover撞翻knockdown撞倒knockat敲knockinto偶遇27.pourinto涌入pourdown倾泻28.ironclothes熨衣服29.pickoff摘掉pickup拾起，接某人，（偶然）学会pickout挑出picksth采摘30.catchfire着火onfire着火31.honoursb尊敬inone’shonour为了纪念havethehonourof有幸的32.v.presentsbwithsth=presentsthtosb颁发，赠送n．礼物adj.现在的，目前的—atpresent（前置定语）presentpresident出席的，在场的—bepresentat（后置定语）presidentpresent33.bedoing…when…正在做…突然beabouttodo…when…=begoingtodo…when…正要做…突然…34.hearsbdo听见（全过程）hearsbdoing听见（正在做）34.cutoff砍断cutdown砍倒，削减cutout切掉cutin打断35.强调句：itis/was+被强调部分+that/who+其它36.表示“许多”的词和词组(1)修饰可数名词。many(of)manya／an+可数名词单数+单数谓语agreat／goodmany(of)anumberofscoresofdozensofquiteafew(2)修饰不可数名词。muchagreat／gooddealofquitealittlealargeamountof+单数谓语1argeamountsof+复数谓语(3)修饰可数名词，也可修饰不可数名词。alotoflotsofplentyofagreat／1argequantityof+单数谓语great／largequantitiesof+复数谓语massesofamassof37.putone’shandson找到38.takeaction采取行动39.treatsbforsth治疗某人某种疾病treatsbwithsth用…治疗treatsbtosth请…吃…（itis）mytreat我请客40.congratulatesbon(doing)sth=congratulationstosbonsth因…祝贺…41.thereisnodoubtthat毫无疑问sbdoubtwhether/if某人怀疑42.haveagoodknowledgeof精通于43.makea(big/great)difference有影响，起作用makenodifference没影响，不重要44.applysthtosth将…应用在…将…涂抹在…applyoneselftodoingsth专心于applytosth适用于apply(tosb)forsth向…申请…45.watch/lookoutfor当心，小心