buy的过去式形式,bought怎么读

例如:go - went make - made get - got buy - bought come
break breed bring broadcast browbeat build burn burst bust buy
did went saw done gone seen eat find ate eaten found found buy
分词同形) bring 带来 deal 交易 dream做梦 feed喂养 build 修建 buy
动词变过去式的特殊形式.doc