问题描述: he kept throwing up his arms in despair.throwing 做什么成分? 1个回答 分类:英语 2014-10-16 问题解答: 我来补答 he kept throwing up his arms in despair他绝望地挥舞着手臂he 主语kept 系动词throwing up his arms in despair (动名词短语作)表语仅供参考 展开全文阅读