has, set, train, and, long, his, son, the, railway, how, owned
______________________________________ ?
How long has his son owned the train and railway set
【详解】根据所给标点可知应为疑问句,分析所给单词, how long 引导特殊疑问句,时态是现在完成时,助动词 “has” 提到主语 “his son” 前; owned“ 拥有 ” ,作谓语; the train and railway set 作宾语。故填 How long has his son owned the train and railway set“ 他儿子拥有火车和火车轨道组多久了 ” 。
登录并加入会员可无限制查看知识点解析