He will be invited to go out and play by his friend.

因为will be invited是将来时态的被动语态，表示未来某时刻他将被朋友邀请，go out and play表示出去玩的活动，延伸内容可以是提醒他记得好好享受和放松，也要注意时间安排不要耽误学业或其他重要的事情。