what fun it is! 这个fun前面是不是要加a或者what改fun?

what fun it is! 这个fun前面是不是要加a或者what改fun? -----(China)kung fu is really fun.They all like it What a ____(fun)story it is! what fun it is to=how____ 为什么是what fun it is to. what fun day it is?为什么用fun,不用funny 如题What fun it is中fun是什么 为什么是what great fun it is!而不是what a great fun it is! 为什么what great fun it is 这个句子里,great前没有a? 英语的fun可数吗?是What a great fun it is!还是What great fun it is! what a fun和how fun的用法是what a fun it is to do sth还是how fun ? What fun it is 和How fun it is 后面加doing还是to do What fun it is How fun it is ,怎么用,仔细点 为什么说what fun it is!而不用how fun it is?这是什么句型? what fun it is to jump into a pool or a lake这个句子中的waht fun是什么用法,可不可以换为what interest,为什么 ()it is to fly kites in the parka what fun b how fun c how funny d what a fun what fun it is to do怎么造句 what great fun it is+to do sth 吗