it is fun to do和it is fun doing区别也就是说不定式与动名词作主语的区别

What fun it is 和How fun it is 后面加doing还是to do It is fun to do sth造句 It is fun to do sth.造句. it is fun to do 还是 doing? what a fun和how fun的用法是what a fun it is to do sth还是how fun ? it is a great fun to do sth.还是it is great fun to do sth it is fun to do和it is fun doing区别也就是说不定式与动名词作主语的区别 It is fun to do sth对,还是It is fun to doing sth It is fun?到底是It is fun to do sth 还是It is fun doing sth?It is fun for sb + It is great fun to do ...It is great fun to do sth还是It is a great fun to do sth? what fun it is to do怎么造句 what great fun it is+to do sth 吗 it is great fun +doing还是to do It's fun to do和It's fun doing的用法 It's fun to do和It's fun doing的用法,具体一点,要有例句. what fun it is和how fun it is两个有什么区别?有没有后面加to do或者是加doing的区别 fun可以做形容词吗fun可以做形容词吗fun可以做形容词吗it is fun to do it fun是什么词性 it is fun to do 与it is no fun doing 与 it is fun doing三者的区别是什么?