adj. 忙碌的；占线；繁华的；爱管闲事的
vt. 忙着做某事；使奔走；使经营；
n. 〈英俚〉侦探；包打听；
1. be busy with/at/over sth.
例句：
He is busy at work.
他忙着工作.
Jean is busy with her work.
琼忙于自己的工作.
2. be busy in doing sth, in可以省略
I am busy writing a novel.
我正忙于写小说.
3. 作及物动词. 使忙于busy oneself with/at/about/in
Bill busied himself with collecting materials.
比尔忙于收集资料.
碰到不会的单词或搭配 可以养成查字典的习惯. 很多经典的例句都是出自字典的.
另：楼上的doing和to do的区分 busy是没有的.
中学阶段在这个方面的考点有几个单词 如remember,stop, forget, regret等.
remember doing 记得做某事/ to do 记得要去做某事 (forget一样）
stop doing停止正在做的事/ to do 停止手头上的事去做...
regret doing 后悔做过某事/ to do 遗憾的要去做某事
1. There has been a busy start to polling in today's local elections.
今天地方选举的投票一开始就人头攒动。
2. The ward was busy and Amy hardly had time to talk.
病房里非常忙碌，埃米几乎没有时间说话。
3. I had a busy day and was rather tired.
今天很忙，我累坏了。
4. It is the mother who is expected to reorganize her busy schedule.
应该让母亲来重新安排自己紧张的日程。
5. Across the busy plaza, vendors sell hot dogs and croissant sandwiches.
在热闹广场的另一边，摊贩叫卖着热狗和羊角三明治。
6. The onslaught of orders should keep aircraft manufacturers busy for some time.
纷至沓来的订单应该会让飞机制造商忙碌一段时间。