what a fun和what fun哪个对 我记得好像有个what a great fun 所以我认为你what a

what a fun和what fun哪个对 我记得好像有个what a great fun 所以我认为你what a what great fun\what a great fun.哪个对 What great fun和What a great fun哪个才是正确的? what a great fun/what great fun为什么不可以用how great fun what a great fun swimming in the river...和what great fun swi what a great fun it is to go fishing和what great fun it is to what a fun还是what a funny What a great fun it is to go surfing; What great fun it is t 请问那个正确 What a great fun it is to go surfing; What great fun 为什么是what great fun it is!而不是what a great fun it is! what a lot of fun what a fun和how fun的用法