英语不规则动词分类am/is was bear bore beat beat become became begin b
3个回答

好的,你看:1,关于catch,teach ,think,bring,buy他们的过去式都是ought或者aught,原单词有a的就是aught,没有的就是ought2,keep,sleep,还有个sweep是一样的,全是+ept3,build,send ,spend,都是把d变为t4,draw,grow,kno...