do sth for fun后加什么

do sth for fun后加什么 do sth for fun It's fun to do sth.中的fun什么词性 感官动词后加do sth 和doing sth有什么不一样?上 It's a fun to do sth.fun是不可数名词为什么还要加a? It' fun to do sth 这句有没语法错误,It's+ adj 后面什么时候加to do sth 什么时候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 + use后加to do sth 介词和一些词的问题（英）一些介词后加doing,如：like,find,what about,enjoy,have fun等,但我觉得like ,enjoy好像也是动词啊,借此有什么特点吗?还有一些decide to do sth 和make sb do sth 等有些加to有些不加 think about 后加doing sth.还是 do sth. 动词后加Sth.for sb. what do you for fun 和what do you do for fun有什么区别? to do sth 的sth 做什么成分[即不定式后加了动词原形后的名词】 have fun doing sth 还是have fun to do sth? have fun doing sth.还是 have fun to do sth. it后面加什么词举例说明it +....+....+for+sb+to+do+sth do sth for a living什么意思 make a promise后能不能加to do sth.make a promise后到底接什么解构,能不能加to do sth?