sb.is at/in somewhere doing sth.这个句型是什么?

There is sb doing sth.这个句型的用法 when sb doing sth,sb doing sth 这个句型可不可以? 有it is time for sb.doing sth.和it is time for doing sth.这个句型吗 in doing sth这个句型是什么意思? sb in doing sth stop sb to doing sth 用这个句型造句 请问有没有sb.be there +doing sth.这个句型? 请问有否want sb.for doing sth.这个句型? want sb doing sth 没有这个句型吧? 英语翻译sth is good for (doing)/sb sthdo well in (sth)/doing sth 英语句型.sb be interesting to do sth sb be interested in doing s 关于There be sb/sth doing句型