be happy to do sth和have a good time doing sth的区别

be happy to do sth和have a good time doing sth的区别 have a good time (to do) sth 还是 have a good time （doing) sth have doing sth 和 have to do sth的区别 英语翻译have a good time doing sth 和be nice to sb（翻译成中文） have time to do sth.与 have time doing sth.的区别 have problems with to do sth 和doing sth 区别 be fun to do sth 和have fun doing sth 有什么区别 加 例句 be crazy about doing sth 和be crazy to do sth的区别是什么 be afraid to do sth和be afraid doing sth的意思相同吗?区别是什么 be sure to do sth和be sure of doing sth的区别 be busy doing sth 和be busy to do sth 的区别 be afraid to do sth 和be afraid of doing sth 的区别?