“经常”常用的表达为：often; frequently; regularly; day-to-day。
“经常”还可以用英语表达为：everyday；half the time；often and often；at every turn；semper；evermore；regularity；oft-times；most an end。
双语例句：
1、他经常上图书馆去。
He often goes to the library.
2、这类问题是经常发生的。
This kind of problem frequently crops up.
3、我掌握了大量关于这类事的最新信息，因为我经常收听新闻。
I am very up to date on this sort of thing because I listen to the news.
4、我和妈妈过去经常争吵。
Mum and I used to fall out a lot.
5、我经常喝点酒放松一下。
I regularly have a drink to wind down.
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