Step4 今天开个小灶吧。记住一些常用前缀，以后就可以望词生义了。呵呵，我们试试哦，不好就扔砖头。好就点下支持吧~~~

前缀 a

        1. to             eg: away ,aboard,abroad,alike,alive,awake

        2."否"或"非"  eg: atom,amoral,asymmetric,amazon,apolitical

前缀 ab

      1. to               eg: abrupt,absorb

      2."否"或"非"    eg: abnormal,absolute,abuse

前缀 ac /ad

      1.to               eg:academic,adapt,adhere,adjust,adopt

前缀 a+字母双写

       1.to(an-与ar-同时具有"否"或"非"的含义）

                          eg:accelerate,assure,assistant,accommodation

前缀 anti

        1.之前         eg:anticipate,antiwar,antique

        2.反，抗      eg: anti-Japanese war,antibiotic,Antarctic

前缀 bi     

       1.两，双       eg:bicycle,bilateral

前缀 bene

       1. 好           eg:benefit,benediction,benefactor