be busy to do sth有这个短语吗

be busy to do sth有这个短语吗 有没有be busy to do sth. 有没有be busy to do sth?busy也是形容词丫!为什么?不是be adj to do 是be busy doing sth还是be busy to do sth? be busy doing sth 和be busy to do sth 的区别 be busy with sth 与be busy to do sth的区别 be busy加什么?be busy是接doing sth还是to do sth? 到底有没有be busy to do这个结构, be busy to do sth.和be busy doing的区别 sb be made to do sth有没有这个句式? be valuable to do sth有这个用法吗? 有没有want sth.to do这个词组?怎么用?以及want sth.to be done? 谁能用sb be free to do sth sb be busy with sth sb b谁能用sb be free to do sthsb be busy with sth sb be busy in doing sth各造2个句子, busy doing sth还是 busy to do sth 是busy doing sth.还是busy to do sth. be afraid of doing sth be busy doing sth be glad to do buy sb sth bring sb sth help sb with sth 造句 忙于做某事为什么要用be busy doing sth 可以用be busy to do sth吗为什么不能用to do啊 land on .land at区别?还有：be busy doing 和.be busy to do sth的不同?