what fun it is to jump into a river on a hot day.为什么用what fun instead of how fun

what fun it is to=how____ 为什么是what fun it is to. 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 to do怎么造句 what great fun it is+to do sth 吗 翻译What fun it is to learn like this ()it is to fly kites in the parka what fun b how fun c how funny d what a fun _____ to have a good rest after a long journey.A.What a fun it is B.what the fun it is C.What fun it is D.How fun it is what fun it is to listen music 这里的fun为什么不能是形容词用how fun. （）it is to have a swim in hot summerA:what a fun B:what fun C:how fun D:how a fun ________ it is to have a cold drink on such a hot day!A.What a fun B.How fun C.What fun D.How a fun ______ it is to visit China some day in the future.A What a fun B How fun C What fun D How a fun ( )it is to visit china some day in the future what a fun 2how fun 3what fun 4how a fun ----------it is to listen to music A How fun B How a fun C Whae a fun D What fun 选什么 what great fun it is to go hiking in such fine weather!和what a great fun .!哪个对?为什么? 英语fun有形容词意么?what fun it is to go swimming?what 可以用how 替代么 it's fun to do 换成 感叹句是what fun 还是 how funit's fun to play with them=______ _______ it is to play with them.