31、句型 31：keep sb. / sth. ＋adj./ V-ing/ 介词补语/ adv. You must keep your classroom clean. 你们必须保持教室干净。 Sorry to have kept you waiting. 对不起，让你久等。 Can you keep him in the room
1、句型1：There＋be ＋主语＋地点状语/ 时间状语 There s a boat in the river. 河里有条船。 2、句型2：What s wrong with＋sb. / sth. ？ What s wrong with your watch？你的手表有什么毛病？ 3、句型3：How do
