1 附件1:ace与GBT19011-2008标准主要差异性分析 1d be(am,is,are) was;were been bear bore borne,born beat beat beaten become became become befall befell befallen begin began begun behold beheld beheld bend bent bent bet bet,betted bet,betted betake betook betaken bethink bethought bethought bid bade,bid bidden,bid bide bode,bided bided bind bound bound bite bit bitten,bit bleed bled bled blend blended,blent blended,blent bless blessed,blest blessed,blest blow blew blown break broke broken breed bred bred bring brought brought broadcast broadcast,broadcasted broadcast,broadcasted build built built burn burnt,burned burnt,burned burst burst burst buy bought bought cast cast cast catch caught caught chide chid,chided chid,chidden,chided choose chose chosen cleave cleaved,cleft,clove cleaved,cleft,cloven cl