have a surprise party中surprise是什么词

have a surprise party中surprise是什么词 have a surprise party,为什么要用surprise? surprise 本身也没有形容词性啊?i will have a surprise party 这里的是什么词性 have a surprise 1.Have you ever been to a surprise party? I have a surprise for 英文作文a surprise birthday party I had a surprise party for Mary. we had a -----(surprise ) party 理由 a surprise birthday party有语法错误吗? surprise surprise party.为什么要用surprise?