报名参加比赛用英语怎么说

"Sign up for the competition" is the commonly used English phrase for "报名参加比赛".
Example sentences:
I want to sign up for the competition to showcase my skills.
Can you sign me up for the competition? I think I have a good chance of winning.
中文翻译：
我想报名参加比赛，展示我的技能。
你能帮我报名参加比赛吗？我认为我有很好的获胜机会。
This phrase comes from the verb "to sign up" which means to register or enroll for an event or activity. The word "competition" refers to a contest or event where participants compete against each other to determine a winner.