busy 繁忙的，形容词。
1、busier busiest 是它的比较级和最高级
例如：I am much busier than before .我现在比以前忙多了。
He is the busiest teacher in the school.他是本校最忙的老师。
2、busily 副词
He spent the whole weekend busily.他繁忙地度过了周末。
3、同词根名词business商业
The business is bad this year .今年商业不景气。
希望带来帮助。
