rob的过去式robbed,为什么要双写b?

rob的过去式robbed,为什么要双写b? rob与robbed的区别? rob的过去式和过去分词 rob 与stealThe bicycle was stolen.Dan was______.A robbed B stolen C taken D stealing为什么选A? report follow listen notice argue stop beg rob的过去式. steal与rob那个有被洗劫一空的意思His car is stolen.His car is robbed.有什么区别？ rob过去式和过去分词 the young man ---her ---her purse a rob of b robbed off c rob of d robbed of 时态怎么判断 rob的过去式和过去分词是什么?现在分词是什么 名词形式是什么? get rob的意思get rob 关于stolen robbed的选择题ketty told the policeman that her gold watch ( ).C.had been stolen from D.had been robbed of why?书上说了三句型：rob sb.of sth.sb.be robbed of sth.steal sth.from sb.我主要想知道D 是从哪个句型转换 关于rob和steal的一道题He was seen ____ some money from an old man.A.to rob B.to steal C.be stolen D.to be robbed被动语态中,be seen to do 是没有问题了..关键是rob和steal的用法...（不只要答案哦,） rob的名词是什麽 trade,rob的意思 rob的意思 宾语补足语vs动名词复合结构i have heard about the teacher ____.A.rob B.robbed C.robbing D.being robbed我能理解,做宾补.但是我觉得如果从动名词的复合结构做宾补来考虑的话,D答案也可以. 关于两者的被动 rob sb.of sth.；steal sth.from sb.ketty told the policeman that her gold watch ( ).C.had been stolen from D.had been robbed of 书上说了两句型：rob sb.of sth.steal sth.from sb.这里D应该是用第一句型的被动吧 They knocked him down and ( )him of this bag.A.rob B.robbed C.steal D.stole