stay的过去式是stayed， 过去分词是stayed。
stay是以元音字母+y结尾的动词，不是以辅音字母+y结尾，所以变过去式时直接在词尾加ed就可以了。
stay 英 [steɪ] 美 [steɪ]
vt.& vi. 停留;停止;坚持;抑制
vi. 继续处于某种状态
n. 逗留;延期;倚靠;忍耐
第三人称单数： stays 复数： stays 现在分词： staying 过去式： stayed 过去分词： stayed
扩展资料：
‘Do you want a drink?’ ‘No, thanks, I can't stay.’“你要不要喝一杯？”“不，谢谢，我不能久待。”
Stay there and don't move!待在那儿别动！
We ended up staying for lunch.我们最终还是留了下来吃午饭。
She stayed at home (= did not go out to work) while the children were young.孩子们小的时候，她没出去上班。
I'm staying late at the office tonight.今晚我要在办公室待到很晚。
My hat won't stay on!我的帽子怎么都戴不住！
Can you stay behind after the others have gone and help me clear up?你能不能等别人走后留下来帮我收拾收拾？
We stayed to see what would happen.我们留下来看有什么情况。
[V -ing] They stayed talking until well into the night.他们待在那儿一直谈到深夜。
