4、iety n. 社会3.behaviour n.①[U]thewaythatsb.behaves,esp.towardspeople. 行为good/badbehavior socialbehaviorMakesurethatgoodbehaviorisrewarded. 确保良好的行为受到嘉奖。②[U,C]thewayaperson,ananimal,aplant,achemical,etc.behavesorfunctionsinaparticularsituation(人,动植物,化学品等的)
5、表现方式,活动方式studyinghumanandanimalbehavior 研究人类和动物的行为模式behave v. 表现 Theybehavedbadlytowardstheirguests.4.familymember 家庭成员member n. [C]①amemberofagroupisoneofthepeople,animals,orthingsbelongingtothatgroup. 成员②amemberofanorganizationsuchasaclubo
6、rapoliticalpartyisapersonwhohasjoinedtheorganization会员,成员5.greet v.①tosayhellotosb.ortowelcomethem (和某人)打招呼(或问好)greetsb.(withsth.) Shegreeteduswithasmile.greeting n. ①[U,C] somethingthatyousayordotogreetsb. 问候;招呼;致意②[pl.]问候的话(一般用复数)