第四题中为什么stay要加s啊.

第四题中为什么stay要加s啊. 第四题中为什么stay要加s啊 第四题,为什么eat后面加s so he must stay in bed for a week.句中stay为什么不加s He must stay at home.句中的stay要加s吗?为什么? 英语问题one和onesWeak buildings will fall down in an earthquake,but strong ( ) may stay up.括号中答案是填ones但为什么不是one为什么要加s啊? I sometimes stay in bed until lunchtime.为什么sometime要加s I stay at home on Saturdays 为什么星期六加s “I’ll pray to the Gods let him stay “中pray to the Gods 的god后面为什么要加s?这是一句歌词~ stay加s还是es stay++up++为什么stay加ing I think staying at home is really boring 中stay为什么要加ing? I preferred to stay behind rather than go with you.中为什么prefer要加ed I usually stay home at night.stay home 中home前面为什么不用加at? Were you at the butcher's?后面为什么要加's,再如i was at the greengrocer's.we are going to stay at my mother's. 高中化学实验题第四问为什么要加硫酸? Here's英语在句子中为什么要加s stay at home为什么要加at?at可以省略