it is a great fun 还是it is great fun居然年级第一说 前者 那么到底是前者还是后者?

it is a great fun to do sth.还是it is great fun to do sth 英语的fun可数吗?是What a great fun it is!还是What great fun it is! It is great fun to do ...It is great fun to do sth还是It is a great fun to do sth? it is a great fun 还是it is great fun居然年级第一说 前者 那么到底是前者还是后者? 为什么是what great fun it is!而不是what a great fun it is! A.It is of great fun.B.It is great fun.哪种用法才对呢?还是两种都可以用?XIE! it is great fun +doing还是to do It was great fun!还是：it sounds great fun? I think it is a great fun.改错) fun 可数吗,What.a great fun it is .正确吗 What a great fun it is to go surfing; What great fun it is to go surfing 请问那个正确a great fun不是把抽象名词具体话么?那The teacher'words were a great encouragement to me.还是The teacher'words were great encouragement to me. it is great fun to fly a kite here感叹句---- great fun ---- ---- to fly a kite here! 是have a great fun还是have great fun啊 such a great fun还是such great fun it is great fun后应加什么时态 It is great fun啥意思? 为什么what great fun it is 这个句子里,great前没有a? what great fun it is to go hiking in such fine weather!和what a great fun .!哪个对?为什么?