hard to do sth

是hard to do sth 还是 hard doing sth it is hard to+Ving还是to do sth 是hard for sb donging sth还是hard for sb to do sth be hard for sb to do sth是什么意思? 英语翻译It's hard for sb.to do sth.快 用it is hard for sb to do sth造句 用it is hard work to do sth.造句 急需 it is probably hard for sb to do sth It's too hard for sb to do sth. He finds that it's hard to do sth. do sth to do it is hard() sth.a.to do b.do c.doing