过去式ought和aught的规律
不规则动词过去式、过去分词含ought或aught bring, brought, brough 带来 buy , bought, bought 买 think ，thought，thought 想，认为 fight,fought,fought 与。。作斗争 teach， taught, taught 教 catch, caught, caught 抓住，接住 记这六个单词，容易把ought或aught搞混，仔细观察发现，过去式和过去分词含aught的，原形有ch或tch，抓住这点...