Are you going to her party?I’m not sure,I might stay home.问：

1。表示允许或请求;表示没有把握的推测;　　may 放在句首,表示祝愿。　　May God bless you!　　He might be at home。　　注意：might 表示推测时,不表示时态。只是可能性比may 小。2。表示推测、可能性(不用于疑问句)。　　He may /might be very busy now。　　Your mother may /might not know the truth。　　It may/might rain this afternoon。He may come,or he may not。　　She may still be waiting for us。　　1)。作此种用法时,也可用might(不是过去式) 语气更委婉;若是对过去情况的推测,用may/might have done (本来可以做某事)　　You may/might have helped me when I asked you。　　2)。表示推测时,may not意为“可能不”,can’t意为“不可能”,前者较后者语气弱得多。　　He may not come today,for it’s raining。　　He can’t come today,for he has gone to America。