在我們的腦海里often作頻率副詞，用于一般現在時，這也是我們根深蒂固的用法：
He often watches TV in the morning. (一般現在時)
他經常早上看電視。
I often go to the library on Sundays.
我經常星期天去圖書館。
但是often還有許多用法，請看其用法要點：
1.often表示“經常”，通常放在行為動詞之前，特殊動詞（助動詞、情態動詞、動詞be）之后，often可以放在句首，還可有放在句末。often通常用于與一般現在時、一般過去時或者一般將來時，大家要特別注意often與情態動詞will連用，表示一種將來慣常的行為，與情態動詞would連用，表示過去慣常的行為。
She is often late for work.她經常上班遲到。
They often go to cinema together.他們經常一起去電影院。
You must often come to see her.你要經常來看她。
2.often放在句末用來加強語氣
You won't see me often.你不會經常看到我的。
He writes to me often.他常常給我寫信。
3.often放在句首時表示強調
Often did we warn him not to do so. 我曾常常警告他不要那樣做。
4.與will連用表示將來慣常的行為：
We will often help the old men next year.明年我們將經常幫助這個老人。
They will often come here next week.下周他們打算經常來這里。
5.與情態動詞would連用，表示過去慣常的行為
When we were children, we would often stay up all night.我們當孩子時經常通宵不睡。
6.often后接動詞過去式用于一般過去時
例：I often went the zoo on weekends.我過去經常周末去動物園。
He often went the library on weekends.他過去經常周末去圖書館。
Jim often got up early last year.吉姆去年經常早起床。
7.特別注意：often可以用于一般將來時
例：I will often go to see her next year.我明年會經常去看她的。
We will often help the old men next year.明年我們會經常幫助這個老人。
Turn on the television or open a magazine and you will often see advertisements showing happy, balanced families.
你一打開電視機或翻一翻雜志，就常常會看到顯示幸福、穩定家庭的廣告。（四級考題）
Art thieves will often hide an important work for years after it has been stolen.
藝術品盜賊偷走重要藝術品后常常會把它藏匿好幾年。柯林斯高階英漢雙解學習詞典》
Wakeful babies will often continue to need little sleep as they grow older.
通常睡眠輕的嬰兒長大后仍然只需要較少的睡眠。
Electrical retailers will often take away old appliances if you buy a new one, sometimes in part-exchange.
買新電器時，電器經銷商往往會拿走舊電器，有時會以舊換新。
They will often get food at night as well.
它們也經常在晚上進食。
The lion will often stalk its prey for hours.
獅子經常悄然跟蹤獵物達幾個小時。
