2、el across 横过walkacrossthestreet对面acrossthestreet after在……之后aftersupper 跟……后面oneafteranother 追赶runafteryou against 背靠逆风againstthewall,againstthewind 反对beagainstyou among 三者以上的中间amongthetrees at在某时刻atten 在小地点attheschoolgate 表示速度athighspee
7、下undertherulewith 用某种工具withapen带着,具有withme without 没有withoutair (二)正误辨析[误]Wegottothetopofthemountainindaybreak.[正]Wegottothetopofthemountainatdaybreak.[析]at用于具体时刻之前,如:sunrise,midday,noon,sunset,midnight,night。[误]Don'tsleepatdaytime[正]Don'tslee