explain过去分词 加ed
explain的动名词形式 explaining;不双写.f
英语词性变化题,求高手作答 fortunate fortunately unfortunatelucky luckily unluckyexplainationweightinvestdiscoveryadmitted admitted admitting to doashameofsentimentalinunoccpymentallyforgave forgaven doing自己做的,太辛苦了。