am的过去式和过去分词

is和am 的过去式 都是 was are 的过去式是were 过去分词都是been

was

am/is/are 的过去分词均是been

is being was

am/is 的过去式:was are 的过去式:were

过去式---was过去分词---been

一般现在时:is am are 过去式: was was were 过去分词:都是been

is,are,am没有进行时 他们的过去式,过去分词各是was,were,were

was am is的过去式 was

am的过去式是was(is的过去式也是was)