age n. 年龄 v. 变老(at the age of…/时年..岁; be of age(= come of age/)成年 ;
ago adv. 以前，以往(long long ago很久很久以前, two days ago/两天前);
agree v. 一致, 相合, 同意 (agree on…/对…意见一致; agree with sb. /同意某人的话; agree to do sth. 同意做… );
agreement n. 一致, 同意, 协议(in agreement with .../和..一致);
agriculture n.农业
ahead adv.在前, 向前, 提前( ahead of…/在…之前;超过); addict: v. 使沉溺于(addict oneself to( = be addicted to) 沉溺于，热中于)
in addition/加上, 又, 另外;in addition to/加上, 除...外;
additional adj.附加的, 另外的; 补充的
address n.收信(件)人的住址 v. 对...讲演或发表演说; (address a meeting 向大会致辞)
adequate adj. 足够的,恰当的,胜任的 (be adequate for..胜任…)(adequate – enough –sufficient足够的)
adjust v. 调整;调节; 使适应(adjust oneself to sth./使自己适应..)
admire v. 赞美;赞赏;(admire sb. for sth./因…而钦佩某人)
admit v. 让...进入, 使获得(某种地位或特权), 承认(事实、错误等) (admit sb. into the university/获准入大学; admit sb. to hospital/把某人收治入院);
adopt v. 采用, 采纳 (adopt –take采用)
adult n. 成年人 (adult –grown-up成年人)
advance v./n. 提高(物价等), 增加(数量、价钱等), 提前, 加速, 拨快(时针) (in advance/预先)(advance-increase增加(数量、价钱等) )
advantage n. 优势, 长处, 利益, 便利 (take advantage of/利用，欺骗) (advantage - merit优点)
adventure n. 冒险, 惊险活动 advertisement n. 广告(= ad.)
advice n. 劝告, 忠告(a piece of advice/一条意见; give advice /提出忠告; take/follow one’s advice /接受忠告)
advise v. 建议, 提意见, 通知( advise sb. to do sth./劝某人做某事，advise sb. that../通知某人某事 = inform sb. that…)
(B级)advisable adj. 明智的， 可取的 (advisable – sensible --wise明智的)
affair n. 事情[件], [常用复] 事务, 事态(affairs of state/国务; foreign affairs /外交事务 )
affect v. 影响, 对...起作用[反应], 感动, 患(病) (affect – influence – have a bearing on影响)
afford v. [常与can, could, be able to 连用] 担负得起费用(损失、后果等)( can’t afford to buy sth./买不起...)
afraid adj. [常作表语] 怕, 害怕, [口]恐怕( be afraid of/害怕, 担心; I’m afraid/[口]大概, 恐怕, 担心) (afraid --fearful)
Africa n. 非洲
after prep. 在…以后，adv. 以后， 后来conj, 在…以后
again adv. 再一次， 又一次 again and again再三地， 反复地
against: prep. 反对，敌对，逆, 碰，触, 以…为背景(be against/反对)
aid v. 帮助, 援助 n. 帮助, 支援(aid sb. in sth./ 帮助某人做。。);(aid – help帮助; aid –device辅助设备)
