报名参加：注册或报名参加某项活动、课程、会议等。
注册：创建一个账户或成为某个组织的成员。
... shut out 把…排斥在外，把...挡在外面 sign up for 报名参加 sit in on 列席(会议)，旁听 ...
... 报名须知 Entrance Application 登记报名 sign up for 大学报名 Enroll in University ...
注册，选课；报名参加
She plucked up the courage to sign up for the competition.
她鼓起勇气报名参加比赛。
What language class did you sign up for?
你报名参加什么语言课程？
I'd like to sign up for some voluntary work with the environment council.
我想报名参加一些环境委员会的志愿工作。
And also, for those of you that did sign up for the pizza forum tonight, that's going to be at 5 o'clock, it's in room 56-502, so we'll see some of you tonight for that as well.
另外，对于报名参加,今晚的披萨聚会的同学，请注意聚会的时间是五点整，地点在，56-502，房间，因此，我们在今晚还会见到你们中的部分同学。
化学原理课程节选 : 麻省理工公开课
And that's where like, in Phase One, you can only sign up for 10 units worth of classes.
比如说，在第一阶段，你只能报10个学分的课程。
SpeakingMax英语口语达人 : 关于授课系统
In particular, please go to it today, you will find a form there that you need to fill out to register for, or sign up for rather, a recitation.
特别声明，请今天就去看，你会找到需要填写的,一份注册表单，或者是复习课的签到表单。
计算机科学及编程导论课程节选 : 麻省理工公开课
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