1.apeacefor20years长达20年的和平打破和平breakthepeace维持和平keepthepeaceadj.peaceful2.TheChinesepeopleareexpectingapeacefulworld.3.40percent50percentofthestudents_are_girls.90percentofhismoney_is/was_givenawaytothecharity.4.perfrmance(n.表演)performer(n.表演者)performone’spromise履行诺言performone’sduties履行职责5.Explainourplantohimclearly.Perhapshemisunderstoodus.6.ashortperiod5个月的一个时期他们正在经历一段困难时期。7.一个无家可归的人ahomelessperson亲自，本人inpersonadj.personal网上的个人信息personalinformationonline个人意见/电脑personalopinion/computer8.养宠物9.2)Ourgrapesarepickedbyhand.10.去野餐goforapicnic11.一支粉笔apieceofchalk一块煤apieceofcoal一则消息apieceofnews一首曲子apieceofmusic一块木头apieceofwood两张纸twopiecesofpaper12.该公司是服装设计领域的先驱。13.她同情那个残疾儿童。真遗憾！Whatapity!It'sapitythatyoucan'tcometotheparty.13.名胜古迹placeofinterest(pl.)placesofinterest第一名thefirstplace代替某人的位置taketheplaceof...发生takeplace她把手放在她儿子的肩膀上。14.planned/planned/(现分planning)Pleaseletusknowwhetheryouplantoattendtheparty(ornot).15.Alltheplantsneedwaterandlight.Springisthebestseasontoplanttrees.theTree-PlantingDay植树节16.塑料袋plasticbags/aplasticbag塑料勺plasticspoons/aplasticspoon塑料盘子plasticplates/aplasticplate17.Welovetoplaysoccerinourspare/freetime.Ilovethenewplaywesawyesterday.戏剧打排球playvolleyball打网球playtennis拉小提琴playtheviolin弹钢琴playthepiano开某人的玩笑playajoke/jokesonsb.玩火playwithfire参加，在...起作用playapart/rolein18.在操场上ontheplayground19.令人愉快的夜晚apleasantevening/night一次令人舒适愉悦的旅行apleasanttrip20.他喜欢取悦别人Wearepleasedtohavesuchapeasanttrip.21.---It’smypleasure.很荣幸。乐意效劳---Withpleasure.非常乐意22.plentyof/alotof/lotsof对我们来说，今年夏天有充足的时间来放松.Thereisenoughtimeforustorelaxthissummer.23.零花钱pocketmoney袖珍照相机24.pollution环境污染environmentalpollutionTheriverisbadlypollutedandwemusttakeactiontodealwiththepollution.25.指着（远指）It'simpolitetopointatotherswithchopsticks.指出9.5ninepointfive要点keypointaturningpoint转折点Wewonthegamebythreepoints.我们以3分赢得这场比赛。26.警局policestation报警callthepolice警官policeofficer女警察policewoman(pl.)policewomen男警察policeman(pl