am的过去式是什么 were是谁的过去式

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

am的过去式是was(is的过去式也是was)

be 动词的过去式:am(was) is(was) are(were)

am 的过去式是was if I were a boy,是虚拟语气,表示你不是个男孩,你要是个男孩就好了

am/is 的过去式:was are 的过去式:were

am/is过去式was;are的过去式是were

was am is的过去式 was

was

am和is过去式都是was

am的过去式是was