问题描述: He has a ping pong ball改为复数句是主语改复数还是宾语改复数 1个回答 分类:英语 2014-11-28 问题解答: 我来补答 They have some pin pong balls.he - theyhas - havea - somepin pong ball - pin pong balls请注意:改复数句时,主语、宾语和谓语一起都要改动的.改复数句是将句子所有能变复数单数词变复数. 展开全文阅读