新牛津深圳版英语七年级下册第4单元知识要点

2.convenient方便的(=easier;conveniencen.)4.discuss讨论(=talkabout;discussionn.)6.container松树(fine;line;mine;nine;wine)16.imagine想象(imaginationn.imaginedoing)21.fight与…作斗争(fightern.fought;eight;light;might;night;right;sight)8.inourdailylives10.airpollution20.alotof=lotsof=many/much22.bebadfor=beharmfulto=doharmto23.havefun=haveagoodtime=videsbwithsth=providesthforsb=offersthtosb4.imaginesbtodosth帮助某人做某事6.plantodosth桌子是用木头制成的。(看得见原材料。)酒是用葡萄酿造的。(看不见原材料。)Chinaismadeupofoverthirtyprovices.中国是由三十多个省组成的。四、语法：现在进行时态1.定义：现在进行时表示现在正在发生的动作或存在的状态。也可表示现阶段在进行的动作。2.标志(时间):now=atthemoment:LookListenIt's8:00now.例:Look!Theyareplayingfootball.Listen!Thegirlissingingintheroom.It’s12:00now.Mr.Smithishavinglunch3、现在进行时态构成：主语+be动词现在式（am、is、are）+动词ingHeisn’treadingEnglish.Be(Am,Is,Are)+主语＋现在分词IsTomworking?Yes,heis.No,heisn’t.（三）特殊疑问句Iamnotworking.Youarenotworking.He/Sheisnotworking.单数复数TreesareourbestfriendsonEarth.Theyproduceoxygenforustobreathe,andtheytakeinwastegasfromcarsandotherharmfulgasesfromtheair.Treesalsomakeourlivesmorecomfortableandconvenient.Lookaroundandyouwillfindthatalotofproductsaremadeofwood.However,treesarenowindanger.Peoplecutdownmillionsoftreeseveryyear.Canyouimaginetheworldwithouttrees?Infact,ifwedon’tstartprotectingthemfromnowon,we’llsoonloseourfriends,thetrees.TreesareourgoodfriendsTreesareveryimportantinourdailylife.Theyareourgoodfriends.Treeskeeptheaircoolandclean,theytakeinharmfulgasesfromtheairandproduceoxygenforustobreathe.Theyaremajorfightersagainstairpollutionandmakecitiesbeautiful.Treesmakeourlivesmoreconvenient.Theyprovidealotofusefulthingsforpeople,suchuspaper,foodandoil.Treesalsostopwaterandsoilfromgoingaway.Inaword,wecan’tlivewithouttrees.Weshouldstopcuttingdownmillionsoftreeseveryyear.Weshouldplantmoretreesandtakecareofthem.YesterdayitwasMarch12---TreePlantingDay.Wewenttothehilltoplanttresswithourteachers.Therewelearnedhowtoplanttrees.Wealsolearnedalotaboutplants.Forexample,treescanhelpcleantheair.Theygiveusfood,suchasapples,oranges,grapes,peachedandpears.Peopleandotheranimalsneedthemtolive.Weplantedalotoftreesyesterday.Wewereverytired,butwefeltveryhappy.1.sing3.Wetalkedabouttheprobleminourclassmeetingyesterdayafternoon.7.Doyouthinkonepill(药丸)cancureallkindsofdiseaseinthefuture?A.cancerB.illnessC.stomachache(胃病)D.cold8.MrGreenisablindman.Healwaysgoeseverywherewithaguidedog.9.Treesareimportantbecausetheycantakeinharmfulgases.3.Thecamel(骆驼)isa5.Look!MaryandLucy6.(France)thoughtIhavelivedinFranceforseveralyears.(help)forustolearnanotherforeignlanguage.(ski)o