If something often happens, it happens many times or much of the time.
例句
They often spent Christmas at Prescott Hill...他们经常在普雷斯科特山过圣诞节。Early American weathervanes were most often cut from flat wooden boards...美国早期的风向标大多截自平直的木板。
ADV
（用于询问或说明某事发生的频率）（多）常
You use how often to ask questions about frequency. You also use often in reported clauses and other statements to give information about the frequency of something.
例句
How often do you brush your teeth?...你多久刷一次牙？I don't know how often I heard the same awful jokes...这种千篇一律的烂笑话我不知道听过多少回了。
PHRASE
（有规律地）有时，偶尔
If something happens every so often, it happens regularly, but with fairly long intervals between each occasion.
例句
She's going to come back every so often...她会偶尔回来的。Every so often he would turn and look at her.他会时不时回头看她一眼。
PHRASE
往往；多半；通常
If you say that something happens as often as not, or more often than not, you mean that it happens fairly frequently, and that this can be considered as typical of the kind of situation you are talking about.
例句
Yet, as often as not, they find themselves the target of persecution rather than praise...然而，他们发现自己往往不是被赞扬而是遭刁难。Although sometimes I feel like bothering, as often as not I don't...虽然我有时会觉得这是在找麻烦，但是通常并不会这样。
英汉词典释义
adv.
常常; 经常; 时常
I often go swimming in summer.夏天我经常去游泳。Often had I intended to speak of it.我常想说说这件事。How often does this magazine come out?这本杂志多长时间出一期?
在大多数情况下
It's often difficult to translate poems.翻译诗歌在许多情况下都是困难的。