buy过去式和过去分词,其他的也给一下
问题描述：
buy过去式和过去分词,其他的也给一下
答
buy-bought-bought
do did done
have had had
see saw seen
open opened opened
air aired aired
ask asked asked
put put put
go went gone
be was/were been
一字一字打上去的啊!