邀请信Dear XXX,自我介绍 I am LiHua, Chairman of the Student Union of XXX high school. 举办活动 Recently, a某某活动 will be held in our campus.邀请你来 We would be honored to have you there with us.介绍细节 Here are some relevant details about this activity.活动主题 To begin with, the theme ofthe activity will be 某某主题, which will be not only meaningful but also interesting.时间地点 Besides,it will be in 某某地点 from 几点几分 to 几点几分 in the morning/afternoon/evening on 几月几号.谁来干啥 W