eg. The hens don’t _______eggs during such cold weather.
She _____ her books on the table. ____
B. 过去式与过去分词完全相同
1. 过去式和过去分词中含有ought, aught, 读音是[ :t]
bright----brought----brought think----thought----thought buy----bought----bought
catch----caught----caught teach ---- taught ----taught
2. 动词原形中的e为o,变成过去式和过去分词。
get----got----got sell----sold----sold tell----told----told