often adv.（副詞）經常, 再三

（1）often放在be動詞後.

（2）often放在實義動詞前.

（3）often與very或quite連用表示強調時,既可放句中,也可放句首或句末.

習慣用語

as often as 每當

every so often 偶爾, 有時

often and often 屢次三番, 經常

　　【說明】此詞一般用於動詞之前, be 和助動詞之後, 有時也用於句末以加強語氣.

　　（1）often放在be動詞後.

　　He is often late for school.

　　他經常上學遲到.

　　（2）often放在實義動詞前.

　　He often goes to school by bike.

　　他常騎腳踏車上學.

　　（3）often與very或quite連用表示強調時,既可放句中,也可放句首或句末.

　　My father very often goes to Beijing on business.

　　Very often my father goes to Beijing on business.

　　My father goes to Beijing on business very often.

　　我父親經常去北京出差.

　　always, often, usually, frequently, repeatedly, regularly

　　這些副詞均表示頻度.

　　always: 總是,永遠.語氣最強,指在一切時候,沒有例外.

　　often: 經常,語氣弱於always,側重動作發生的次數具有經常性,具體時間意味不強.

　　usually: 通常,通例地,指習慣性動作,頻度僅次於always,較often大,偶爾有間隔.

　　frequently: 時常,經常,與often同義,可通用,但較正式,強調次數頻繁.

　　repeatedly: 屢次,強調次數多,但反覆的頻率不一定均勻.

　　regularly: 用於修飾經常而有規律性的動作.

一個句型中不可以同時用usually and often.因為這兩個單詞都是表習慣性的動作，所以一個句子中只能用一個。只是有人稱和數的變化。for example:I often go to work by bike.He usually has lunch at twelve every day.The often play football after school.