broadcast ,cast的过去时过去完成时分别是什么?

动词原型:broadcast

动词过去式:broadcast,broadcasted

动词过去分词:broadcast,broadcasted

动词原型:cast

动词过去式:cast

动词过去分词:cast

broadcast过去式,过去分词

动词过去式:broadcast/broadcasted 过去分词:broadcast/broadcasted 都可以的

broadcast的过去式及过去分词是什么？

动词过去式:broadcast/broadcasted 过去分词:broadcast/broadcasted，都可以的