surprise party为什么不用surprising

surprise party为什么不用surprising surprise party为什么不是 surprising party 为什么是a surprise party而不是a surprising party? 应该说surprise party还是surprising party. a surprise party 和 a surprising party 之间的区别 surprise party.为什么要用surprise? have a surprise party,为什么要用surprise? surprise surprised surprising 什么区别 surprise them 为什么不用surprised them surprise/to our surprise/in surprise/surprising/surprised/be 为什么be+surprise（surprise要加ed） 为什么in +surprise（不用加ed）? it's surprised that ..为什么用surprised而不用surprising