上海市牛津版英语6Bunit9知识点总结梳理

牛津版英语六年级第二学期知识点梳理Unit9SeawaterandrainwaterI词组:prepare…for…准备…做…aclasscompetition一次班级竞赛aquarterthreequartersof…四分之一三分之一的……seaanimals海底动物aseahorse海马liveinsp.居住在某地ontheearth在地球上oneof…………之一thelargest最大的themostintelligent最聪明的themostdangerous最危险的intheoceans在海洋里getsthfrom…从…得到某物usesthtodosth(=usesthfordoingsth)用某物做某物inthedeepsea在深海里beimportantto对…很重要的keep…clean保持…干净stoppollutingsth(stopdoingsth)停止污染某物（停止做某事）*theanswertothequestions问题的答案twokindsof……两种……findsomeinformationabout…找出有关….的一些信息ontheInternet在网上athome在家里havenowaterto(dosth…)没有水做某事brushteeth刷牙takeashower淋浴washclothes洗衣服washthedishes洗盘子atwork在工作中waterthecropsandvegetables浇灌庄稼和蔬菜onthefarm在农场里inrestaurants在饭店里havenofoodtoeat没有可以吃的食物cookfood烹饪食物putoutfires灭火Let’sdosth让我们做某事savewater节约用水wastewater浪费用水(fix)adrippingtap（修理）一个滴水的水龙头(under)arunningtap在一个流水的水龙头下turnonturnoff打开关掉playwatergames嬉水takeabath洗盆浴insteadof代替；而不是bydoingsthbynotdoingsth通过做某事通过不做某事otheruses其他用途II.词性转换:*compete(v.)竞争competition(n.)比赛e.g.,Let’shaveacompetitionaboutwater.Iwillaskthequestions.形容词原级large比较级larger最高级thelargestintelligentmoreintelligentthemostintelligentdangerousmoredangerousthemostdangerouse.g.,Whichisthelargestoceanintheworld?Dolphinsarethemostintelligentseaanimals.importance(n.)重要important(a.)重要的e.g.,It’simportanttolearnhowtocommunicatewithothers.danger(n.)危险dangerous(a.)危险的e.g.,Someanimalsareindanger.Let’ssavethem.It’sdangeroustostandinfrontofamovingcar.pollution(n.)污染pollute(v.)污染e.g.,Wemuststoppollutingthewater,thelandandtheair.Werest(n.)兴趣interesting(a.)有趣的；有意思的interested(a.)感兴趣的e.g.,HarryPotterisaveryinterestingbook.I’mveryinterestedinit.cover(v.)覆盖*covering(n.)掩蔽物；遮盖物e.g.,Ilikethecoveringofthebook.WatercoversmostoftheEelligence(n.)智力；脑力intelligent(a.)聪明的e.g.,Doyouthinkdolphinsareintelligent?tooth(n.)牙齿teeth(pl.n.)牙齿e.g.,Weshouldbrushourteethtwiceaday.fish(v.)钓鱼(n.)鱼fisherman(n.)渔夫fishermen(pl.n.)渔夫e.g.,Fishermenusenetstocatchfishandprawns.Iusuallygofishingwithmyfatheratweekends.fireman(n.)消防员firemen(pl.n.)消防员e.g.,Afiremanusuallyputsoutfires.Ifthereisnowater,firemenwillhavenowatertoputoutfires.farm(n.)农场farmer(n.)农夫e.g.,Farmersneedwatertowaterthecropsontheirfarm.drip(v.)滴水dripping(a.)滴水的e.g.,It’sadrippingdaytoday.I’mdrippingwet.Listen!Thetapisdripping.run(v.)奔跑running(a.)流动的e.g.,Wehavearunningsore.Doesithurtalot?III.语言点/句型A.语言点：1.quarteraquarterof四分之一的…..threequartersof四分之三的…ahalfof二分之一的….e.g.Almostthreequartersofthelandispolluted.1/2:one–second/a(one)half1/4:one-fourth/aquarter3/4:three–fourths/threequarters2.oneof…oneof+形容词的最高级+名词复数：“最….之一”oneof+名词复数：“…之一”e.g.,JinmaoTowerisoneofthetallestbridgesintheworld.3．keepkeepsth.+adj.“使……处于某种状态”e.g.,Wepromisetokeepthebeachesclean.Wouldyoupleasekeeptheclassquiet?Wouldyoupleasekeepthewindowopen?4.stopstopdoingsth停止做某事e.g.,Wemuststopkillingwildanimals.*stoptodosth停下来开始做某事e.g.,Whenthebellrang,thestudentsstoppedtohavearest.5.haveno+名词haveno+不可数名词/可数名词复数=nothaveany+不可数名词/可数名词复数e.g.,Wewillhavenotimeatalltowritetoyou.=Wewillnothaveanytimeatalltowritetoyou.Hehasnomoney.=Hedoesn’thaveanymoney.6.needneedsth/sbtodosth“需要某物/某人来做某事”e.g.,IfIneedyoutocomeandhelp,I’llcall.Weneedahammertofixthedesk.7.waterwater(n.)水（不可数名词）water(v.)浇灌e.g.,Don’tforgettowatertheflowersinthegarden.wastewaste(v.)浪费waste(n.)浪费；废弃物e.g.,Don’twastetheflour;thereisn’tmuch.It’sawastetothrowawaygoodfood.turnoffturnoff关掉turnon打开e.g.,Pleaseturnofftheradio.=Pleaseturntheradiooff.注意：当我们使用代词（it/them等）代替名词时，必须使用turnit/themoffe.g.,Pleaseturnitoff.insteadofinsteadof为介词短语，后面一般加名词、代词、动名词（-ing）等e.g.,Ihavecomeinsteadofmybrother.Iwillgoinsteadofyou.Hewasstudyingthewholeafternooninsteadofplayingfootball.*b)instead为副词,e.g.,Mr.Wangwasill.Instead,Mr.Ligaveusthelesson.B．句型：*1.形容词最高级的用法1）形容词最高级的构成规则变化：①单音节形容词和少数双音节形容词的最高级构成：一般在词尾加-este.g.,tall---tallestbright---brighter重读闭音节结尾且词尾只有一个辅音的形容词，双写最后字母，再加-este.g.,big---biggestfat---fattestthin---thinnest“辅音+y”结尾的形容词，将y改为i,再加este.g.,heavy---heaviestearly---earliesteasy---easiest②多音节形容词和部分双音节形容词的最高级构成：在形容词前，加moste.g.,beautiful---mostbeautifulintelligent---mostintelligent③不规则变化：e.g.,good---bestbad---worstmany/much---mostlittle---least2）基本用法：①用于三者或三者以上的人或事物之间的比较，表示在一些人或事物中，其中一个“最……”形容词最高级的前面一般要用定冠词the,即“the+形容词最高级”形容词最高级+of+比较对象形容词最高级+in+比较范围e.g.,Sheisthebeststudentinourclass.Heisthemostdiligentofthethreeboys.oneof+形容词的最高级+名词复数：“最….之一”e.g.,HarryPotterisoneofthemostinterestingbooksintheworld.*最高级与比较级的转换：最高级=比较级+anyother+名词单数+thane.g.,Whalesarethelargestanimalsintheworld.=Whalesarelargerthananyotheranimalintheworld.Tonyisthetallestinourclass.=Tonyistallerthananyotherstudentinourclass.if引导的条件状语从句if表示如果，用以引导条件状语从句在条件状语从句中，如果主句用一般将来时，if从句相应的使用一般现在时，称为“主将从现”If从句可放在主句前面，亦可放在主句后面。If从句如在主句之前，要使用逗号“，”隔开e.g.,IwillgotovisitYuGardenifitdoesn’traintomorrow.YouwillfindalotofinterestingplacesifyougotoShanghai.Ifthereisnorain,wewillhavenowatertocleanourclothes.use…todosthuse…todosth=use…fordoingsth:用….做某事e.g.,Weuseknivestocutbread.=Weuseknivesforcuttingbread.Whatdoweuseknivestodo?=Whatdoweuseknivesfor?补充：beusedtodosth被用来做某事；be/getusedtodoingsth习惯于做某事；usedtodosth过去常做某事。祈使句肯定句：Do(动词原形)sth…,please!否定句：Don’t+do(动词原形)+…e.g.Cleanthetable,please.Don’tcleanthetable,please.Howcanwesavewater?Wecansa