老师举例的时候< >to doing sth的to

be used to doing sth 的否定形式及举例 Prefer的用法有prefer to doing sth.to doing sth.有prefer doing sth prefer doing sth to doing sth 的用法~ prefer doing sth to doing sth.的同义句型 英语问题1.有"be graceful to sb. for sth./doing sth."的句型吗? 如有,请举例． 所有to do ,doing sth的词组 be towards to doing sth 的用法 practice doing sth.和practice to do sth.的区别 start doing sth.和start to do sth.的区别 stop doing sth与stop to do sth的区别 begin to do sth./doing sth.的区别在于? refuse to do sth和refuse doing sth的区别