access to 接近;进入

　　abandon oneself to sth. 完全屈从于(某种感情或冲动)

　　have a (the )ability to do sth. ( have the ability in doing sth.)有能力做某事

　　to the best of one's ability 尽力

　　be about to do when… 正准备做某事突然…

　　above all 首先，最重要; in all 总计 after all 毕竟; 终究

　　at home and abroad 在国内外 go abroad 出国

　　in sb.'s absence 不在时 in the absence of (人)不在时 be absent from 缺席

　　be absorbed in 全神贯注于

　　by accident 偶然 by chance by mistake 由于错误

　　be delayed through an accident 由于事故而耽误

　　be accompanied by 附有;伴随

　　according to (后面不接view,opinion…); in my opinion

　　collect accounts收账; open an account 开账户; keep accounts 记账 ; account for说明; give a full account of 做一个完整的说明; on account of=because of 因为

　　accuse sb. of… 控告某人; charge sb. with sth. 起诉某人; Blame sb. for sth. 责备某人

　　be accustomed to sth.( to doing sth.)=be used to sth.(to doing sth.)习惯于干某事

　　have some acquaintance with 熟悉;熟知

　　be addicted to sth.( doing sth. ) 嗜好…的;上了…瘾的

　　in addtion/ in addtion to 此外

　　deliver an address to 向。。发表演讲 giving a closing address 致闭幕词 an address of welcome 欢迎词

　　admit to sth.( doing sth.) 承认

　　in advance=beforehand 提前

　　be of great (no ) advantage to 对…大大有利(毫无裨益) gain(have) an advantage over优于;胜过; take advantage of sb. 利用某人;欺骗某人

　　put an advertisement 登广告

　　come (run) across (偶然)碰到 ; get sth. across 使人理解;领会

　　act as充当，担任 act out 表演(对话、故事); act on(upon) 对…起作用

　　catch sb. in the act of doing sth. 抓住某人干某事; take action 采取行动

　　be active in 在…积极 take an active part in 积极参加lead an active life过着积极的生活

　　adapt oneself to 使自己适应 adapt sth. to 使某物适应 adapt from 根据…改写(改编)

　　add in 包括; 加进去 add to 增加;加强 add…to 把…加到…上　add up to 合加起来

　　ask for sb.'s advice 征求某人的建议 give sb. advice on how to do sth. 就如何干某事提出忠告

　　advise sb. on sth. 就某事对某人提出忠告;advise sb. against( doing) sth.劝某人不干某事

　　be afraid of 害怕;担心 be afraid to do 不敢做某事

　　be after 寻求;追求

　　be against one's proposal 反对(意见 go against nature违背自然stand against the wall 靠墙而立

　　at the age of 在…岁时; be under age 未成年

　　agree with sb.( what 从句 ); agree with the climate/饮食 对气候等的适应

　　agree to +advice/suggestion/ idea/proposal … agree on (upon) …就。。达成一致意见

　　ahead of ( time) 在…前面 go ahead 继续;前进

　　aid sb. in sth./aid sb. with sth. 帮助某人做某事 in aid of 支持 ;give sb. first aid对某人实施急救