doing sth is important for sb?

doing sth is important for sb? 是sth is important to sb还是 it is important for sb to do sth? be important to sb.与It is important for sb.to do sth.与 sth.i 用it is important for sb to do sth造句 英语翻译sth is good for (doing)/sb sthdo well in (sth)/doing sth for sb doing sth是什么意思? there is no use for sb doing sth thank sb for sth/doing sth造句 reward sb with sth for doing sth 关于thank sb for sth/doing sth sb.spends some time doing sth.it is+adj.+for sb.to do sth.it doing sth is important为什么是DOING?