He goes on stage beside pianist Maria Raspopova.
上面一句摘自2021年新高考考试英语全国卷I（乙卷）阅读理解B。
请问这里的 go on stage 为何不需要冠词？难道不应该是 go on the stage 吗？
高考考试题中的这个句子不可以加定冠词，由于这里是表示“登上舞台”：
He goes on stage beside pianist Maria Raspopova. 他与钢琴家玛丽亚·拉斯波波娃一块登上舞台。
go on stage 和 go on the stage 都可以说，但意思不同：
1. go on stage=登上舞台
I went on stage and did my show. 我上台作了表演。
I had an attack of nerves just before I went onstage. 登台前那一刻我感到很紧张。
Every actor ought to know his lines backwards beforehe goes on stage. 每一位演员在登台之前都需要背熟台词。
Before she went on stage her chest felt tight andher throat hurt. 她上台前胸口发闷，喉咙疼痛。
Before going on stage, I breathe deeply and thinkpositive thoughts. 在走上舞台之前，我做着深呼吸，头脑里想种种自信的念头。
2. go on thestage=做演员
She went on the stage at age 15. 她15 多开始演艺生涯。
He went on the stage shortly after he left highschool. 他中学一毕业就当了演员。
Since she was a schoolgirl she had dreamed of goingon the stage. 自从上学以来她就一直梦想着成为演员。
