What great fun it was! fun前可不可以加a?为什么?

为什么是what great fun it is!而不是what a great fun it is! 英语的fun可数吗?是What a great fun it is!还是What great fun it is! what great fun it is+to do sth 吗 what great fun it is ____ (sit )on the balcony what great fun it is to go hiking in such fine weather!和what a great fun .!哪个对?为什么? What great fun it was!fun前可不可以加a?为什么? What great fun it was! fun前可不可以加a?为什么? fun 可数吗,What.a great fun it is .正确吗 为什么what great fun it is 这个句子里,great前没有a? ——it is to jump into a river in summer a how fun b how funny c what a great fun d what great fun __ it is to play with snow in winter!A How fun B what a fun C How great fun D what great funA 不行吗 How+adj 英语it is to jump into a river in summer!A how fun B how funny C what great fun D what a great fun为什么 It was great fun!还是：it sounds great fun? （ ）it is to meet old friends in a strange place!A.what great fun B.what a great fun C.how great fun D.how a great fun it+was+great+fun是什么意思 It was great fun.感叹句 it must be great fun.great what a great fun/what great fun为什么不可以用how great fun