问题描述: the boy could ride a bike at the age of five(同意句) 1个回答 分类:英语 2014-12-04 问题解答: 我来补答 句子主要是考查短语与句子的互换at the age of five = when he was five(要考虑这是过去时哦 前边是“could”) 展开全文阅读