句子有点像“绕口令”,这俩句子哪来的?两个句子都有错误,改为:They had blanket packs on the back.?They had blankets packed on the back.?改错原因:第一句 on the back, back 用单数。若用复数,改为 on their backs。第一句 blankets 是可数名词,用复数。pack 是动词过去分词,结构 have sth. done。on the back 仍用单数。
They had blanket packs on the backs.
They had blanket packed on the backs.
这两个句子有什么区别?
如题