extend和expand区别.ppt

extend和expand区别,extend:直线状“伸展”，引申“扩展范围、领域等；用于比喻意义时，表影响、势力和范围都超过目前；expand:为最普通用语，主要指物体由于外力或内力的作用而使面积、体积、数量等变大；也可以用于抽象事物。extend用于具体事物，expand多是抽象事物。管道设施的架设延伸，就用extend;市场的扩大延伸，就是expand。,extendvi/vt.1.延续，持续（tocontinuetohappenorexistforacertainperiodoftime);ThetouristseasonextendsfromMaytillOctober.旅游季节从五月延续到十月2.延长，推延（toincreaseaperiodoftimethathasbeenagreed,especiallyinordertofinishajoborpaymoneythatyouowe)Cantyouextendyourvisitforafewdays?你们访问的时间不能延长几天吗?3.扩大；延长建筑或道路等（tocontinueforaparticulardistanceoroveraparticulararea)；。,4.伸开，舒展（tostretchoutapartofyourbody)Heextendedhishandingreeting.他伸出手来表示欢迎。5.提供，给予，表示（help,sympathy,thanksetc)(+to)Iwouldliketoextendawarmwelcometoourvisitors.我想对我们的来访者表示热烈的欢迎6.使竭尽全力（tomakesomeoneusealltheirstrength,intelligenceetc,inordertoarchievegoodresults)7.延伸，扩大（ifyouextendyourcontrol,influenceetcorifitextendsoversth.,itbecomesmorepowerful),expandvt./vi1.展开,张开(帆,翅等)Theeagleexpandeditswings.老鹰展开翅膀。2.(使)膨胀/扩张Waterexpandswhenitfreezes.水结冰时体积膨胀。Atireexpandswhenyoupumpairintoit.轮胎打了气就会胀大。3.扩大,增强(tobecomegreaterinsize,number,oramount,orimportance)Intenyearsthecityspopulationexpandedby12%.十年之中,该城人口增加了百分之十二。Studentnumbersareexpandingrapidly.expandoneswords/expandthelocalairport扩建机场,4.(使）业务扩展（ifacompany,businessetcexpandsorifsomeoneexpandsit,theyopennewshops,factoriesetc)Heisthinkingofexpandinghisbusiness.他正考虑扩展他的生意。expandingeconomy不断发展的经济Thecoffeeshopmayexpandintoafullrestaurant.那家咖啡店将可能扩展成为一家完善的餐馆WehaveplanstoexpandintotheUSmarket.我们打算扩展业务进入美国市场。5.增加活动量；扩展活动范围（toincreasetheamountorrangeofanactivity)6.详细说明(+on/upon)Theyhaveexpandedmyviewonthequestion.他们已更充分地阐明了我对这个问题的观点。,expand/enlarge/widen可接view/mind/knowledge；knowlege的扩大不是在一个方向上，所以只能用expand/enlarge/widenexpand/swell均可表示膨胀，extend多指(如meeting/visit/visa/stay)在时空上的延展；expand指范围的扩张(如telephonenetwork/knowledge)；enlarge指扩大物体(如house/photograph)的尺寸、范围和体积；stretch指身体四肢(如hand/leg/neck等)的伸展；multiply指数量的成倍增加；widen着重指增加某物的宽度,1.Becausethecompanywasdoingmorebusinessitwasnecessaryto_thefactory.A).expandB).extendC).increaseD).grow由于公司的生意越做越大，因此有必要将工厂(建筑)扩建.2.AftersomefurtherdiscussionbetweenKittyandTammyabout_thevillageschoolsystemtoothercommunitiesaroundHebe,KittyandIleft.Aexp