be doing句型有哪些?注意是BE DOING!

be doing句型有哪些?注意是BE DOING! 有无‘be used doing ’句型? be +形容词+doing something 有哪些 有be sorry doing 有没有这样的句型There be +名词+doing sth 请问有没有sb.be there +doing sth.这个句型? be good with doing sth/sb有这种句型吗 be well on the way to doing 是句型吗, be+doing to doing 句型有哪些? 关于There be sb/sth doing句型 用be busy doing sth.句型造句