101.on the average(=on average,on an average)平均
102.(be)aware of(=be conscious of,having knowledge or consciousness)意识到,知道
103.at the back of(=behind)在……后面
104.in the back of 在……后部(里面);on the back of 在……后部(外面);be on one’s back(=be ill in bed)卧病不起。
105.at one’s back(=supporting or favoring sb.)支持,维护;have sb.at one’s back 有……支持,有……作后台
106.turn one’s back on sb.(=turn away from sb.in an impolite way)不理睬(某人),背弃,抛弃
107.behind one’s back 背着某人(说坏话)
108.be based on/upon 基于
109.on the basis of 根据……,在……基础上
110.approve of(=consent to,be in favor of,favor,agree to,consider good,right)赞成,approve vt.批准
111.arise from(=be caused by)由……引起
112.arrange for sb./sth.to do sth.安排……做……
113.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);
114.be ashamed of(=feel shame,guilt or sorrow because of sth.done)以……为羞耻
115.assure sb.of sth.(=try to cause to believe or trust in sth.)向……保证,使……确信
116.attach(to)(=to fix,fasten; join)缚,系,结
117.make an attempt at doing sth.(to do sth.)试图做……
118.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
119.attribute to/toward ……对……的态度、看法
120.beat……at 在……运动项目上打赢
121.begin with 以……开始。to begin with(=first of all)首先,第一(经常用于开始语)