1、assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保证，使…确信。
2、apologize to sb. for sth. 为…向…道歉
3、arrive on 到达;arrive at 到达某地(小地方);得出，作出;arrive in 到达某地(大地方);
4、answer for (undertake responsibility for，be liable for，take charge for) 对…负责。
5、make an attempt at doing sth. (to do sth.) 试图做…
6、be anxious about 为…焦急不安;或anxious for
7、appeal to sb. for sth. 为某事向某人呼吁。appeal to sb. 对某人有吸引力
8、apply to 与…有关;适用
9、attitude to toward …对…的态度。看法
10、approve of (=consent to，be in favor of，favor，agree to，consider good，right) 赞成，approve vt. 批准
11、arise from(=be caused by) 由…引起。
12、arrange for sb.sth. to do sth. 安排…做…
13、be ashamed of (=feel shame，guilt or sorrow because of sth. done) 以… 为羞耻
14、attach(to)(=to fix，fasten;join) 缚，系，结
15、apply to sb. for sth. 为…向…申请;apply for申请;apply to 适用。
16、allow for (=take into consideration，take into account) 考虑到，估计到
17、amount to (=to be equal to) 总计，等于。
18、attend to (=give one's attention，care and thought)注意，照顾;attend on(upon)(=wait upon，serve，look after) 侍候，照料
19、answer to (=conform to) 适合，符合。
20、attribute…to…(=to believe sth. to be the result of…)把……归因于……，认为……是……的结果