frequently和often区别

frequently和often区别是用法不同、侧重点不同。frequently的意思是时常，比较正式，强调次数频繁，often也是时常、经常的意思，侧重动作发生的次数具有经常性，具体时间意味不强。

例句：Buses run frequently between the city and the airport.公共汽车频繁地来往于市区与机场之间。Congestion frequently reduces traffic to walking pace.交通阻塞经常把车流的速度降低得如步行一般缓慢。People often give very different accounts of the same event。人们常常对同一件事的叙述大为不同。