1.often,经常;常常;时常;再三。例句:They often spent Christmas at Prescott Hill.他们经常在普雷斯科特山过圣诞节。
2.regularly,定期地;有规律地,按时,照例,按部就班地;整齐地,有条不紊地;经常,不断地。例句:I regularly have a drink to wind down.我经常喝点酒放松一下。
3.frequently,往往;动辄;频繁地,屡次地;动。例句:This kind of problem frequently crops up. 这类问题是经常发生的。