词汇练习1用a或an填空____umbrella_____usefulbook_____university_______Europeancountry_______unusualday______apple______hour______uglyboy有能力做某事（ability）_________________=______________________can=______________________about担心____________考虑______________谈论____________---怎么样______________向四周看_________________到国外________________aboveall______________beabsent____________因---而缺席accept(汉意)___________accident(汉意)____________实现梦想（achieve）______________cross词性________across词性________在---对面_____________actv._____________n.(活动)____________n.(女演员)_______________n.(男演员)三思而后行_________________actionn._____________采取行动_________________事实胜于雄辩____________________________active词性__________积极参加________________actually(汉意)_______________=________________________=________________________把---加到---add_____________address(汉意)_______________admiresb_________----因---而钦佩某人______________adj.(汉意)___________adult(汉意)_______________advantage(汉意)_______________advicen.______________v.(汉意)_______________一条建议________________接受某人的建议__________________advisesb_________________todo/doing;advise_____________________todo/doingaffect(汉意)_______________(词性)_______effect(汉意)_______________(词性)_______haveaneffect_______sth(汉意)_________________________________负担得起做某事afford__________________害怕做某事beafraid______________________I’mafraidthat(汉意)_______________Africa(汉意)_______________African(汉意)_______________nameafter(汉意)_______________lookafter(汉意)_______________afterall(汉意)_______________afterclass(汉意)_______________在下午(汉意)________________________在星期天的下午(汉意)________________________against(汉意)____________与---比赛___________与敌人斗争_______________________age(汉意)_______________;_______________ago用于_______________时态agree(汉意)_______________v.__________________n.agreeon(汉意)______________agreewith(汉意)________________agreeto(汉意)__________________agreetodo(汉意)___________________去吧（ahead）_________________在天空中（air）__________________在户外_____________________airline(汉意)_______________airplane(汉意)__