1.be present (at) 出席
2.be absent from 缺席
3.will be held/be to be held 将被举行
4.choose sb.as 选择某人作为……
5.attend a lecture/meeting 听课/参会
6.give a lecture/speech 做讲座/演讲
7.take part in/participate in an activity
参加活动
8.be expected to do ... 被期待做某事;有望做某事
9.be invited to 被邀请去……