Unit4Astronomy：thescienceofthestars根据语境猜词义(1)Fruitjuicescanbe_harmful_tochildren'steeth.(2)Manyhouseholdsproductsarepotentiallyharmful.1、harmfuladj.根据语义找匹配：A.有害的B.危害(1)A(2)B1、harmfuladj.harmn.伤害；损害vt.伤害……；损害……harmlessadj.无害的；无恶意的链接dosb.harm＝doharmtosb.对某人有害beharmfulto对……有害短语Itdoesnoharmtodosth./Thereisnoharm(in)doingsth.不妨做某事Itwouldn'tdosb.anyharmtodosth.做某事对某人并无害处Noharmdone!(对别人做错事的一种劝慰)没事儿！不要紧！句型1、harmfuladj.单词拼写(1)Yoursmokingmaybeharmful(有害)tothehealthofyourbaby.(2)Thestormhasdonegreatharm(有害)tothecrops.(3)Thedogseemsfierce,butactuallyhe'sharmless.1、harmfuladj.2、preventv.根据语境猜词义(1)Theheavyrainpreventedus(from)goingtoschool.(2)Theyhavebeenpreventedbythetrafficjamfromgoingthereontime.根据语义找匹配：A.阻碍B.阻止(1)B(2)A2、preventv.“阻止某人做某事”的几种表达式：bansb.fromdoingsth.stopsb.(from)doingsth.keepsb.fromdoingsth.链接单项填空()(1)Wemusttakefirmandefficientmeasurestopreventpollution______ourlifeevenbetter.A.tomakeB.makingC.makeD.againstmaking2、preventv.A考查非谓语动词的使用。本题的语义是：为了使我们的生活更加美好，我们必须采取果断而卓有成效的措施阻止污染。根据语境非谓语动词在本句是目的状语，所以答案是A。本题极容易造成学生们的思维定势而误选B。2、preventv.()(2)We'llsparenoefforttopreventtheriver______.A.frompollutingB.pollutingC.beingpollutedD.polluted2、preventv.C考查非谓语动词的使用。本题的语义是：我们将不遗余力地阻止河流污染。根据语境河流与污染形成了被动关系，所以答案是C。3、developv.根据语境猜词义(1)Weshoulddevelopthehabitofreading,becausereadingcandevelopthemind.(2)Shanghaihasdevelopedintoacommercialcenterofourcountry.(3)Wemustdevelopmanymorenewproductsinordertosatisfythedemandsofmarket.根据语义找匹配：A.养成(习惯)B.发展C.开发(1)A(2)B(3)C3、developv.developedadj.发达的developingadj.发展中的developmentn.发展链接用develop的正确形式填空Withthedevelopmentofscienceandtechnology,somedevelopingcountrieshavedevelopedintodevelopedones.3、developv.4、puzzlen．&v.根据语境猜词义(1)It'sapuzzletomewhyhehasn'tcomeformybirthdayparty.(2)Canyouhelpmeoutwiththemathpuzzle?(3)Herwordpuzzledhim.(4)Iwaspuzzledhowtohandlethesituation.根据语义找匹配：A.使……迷惑不解B.谜C.难题D.使……为难(1)B(2)C(3)A(4)D4、puzzlen．&v.puzzlingadj.令人困惑的；使人感到困惑的puzzledadj.困惑的；感到困惑的puzzlementn.困惑，迷惑beinapuzzleabout对……大惑不解workoutapuzzle猜谜；解决难题puzzleover对……冥思苦想puzzleout(苦苦思索而)搞清楚puzzleone'sbrainabout/over对……而大伤脑筋链接4、puzzlen．&v.用puzzle的正确形式填空The(1)puzzlingboy(2)puzzledhismother,sotherewasa(3)puzzledexpressiononherface.Muchto(4)puzzlementofhismother,helefthomewithoutsayingaword.4、puzzlen．&v.5、gentleadj.根据语境猜词义(1)Mothersarealwaysgentlewiththeirchildren.(2)It'sverycomfortabletoletthegentlewindblowonyourface.根据语义找匹配A.轻轻的，轻柔的B.温柔的，文雅的(1)B(2)A5、gentleadj.gentlelookingadj.看起来彬彬有礼的、看起来很绅士的gentlemann.绅士，先生gentlyadv.温柔地，轻柔地，轻轻地gentlenessn.温柔，和善链接begentlewithsb.对某人体贴入微，对某人温柔有加gentleinvoice/action声音温柔，举止文雅haveagentlemannerofdoingsth.做某事风度高雅短语5、gentleadj.gentle/mild/softgentle用于人时，指温柔文雅的举止，出于自我约束或对他人的体贴。指物时，强调物体运动的轻缓。mild指出于本性性格温柔，脾气好，强调自己“态度安详，不粗野”。Hehastoo...
