often是频率副词,和sometimes,always,never,frequently等一样表示习惯性。
后接动词原形用于一般现在时。
后接动词过去式用于一般过去时。
例句
That doesn\'t happen very often.
那不常发生。
These fish are often eaten raw.
这些鱼常常生吃。
Disease often goes with poverty.
疾病与贫穷常常相伴而生。
水利万物而不争,
而万物莫能与之争。
