频度副词在句中的位置： 频度副词常见的有ever, never, seldom, sometimes, often, always 等，它们通常位于实意动词之前，动词 be、助动词、情态动词之后。
如： He never reads such books. 他从不看那样的书。
He often comes to school late. / He is often late for school. 他上学常迟到。
有时为了强调，频度副词也可位于动词 be、助动词等之前： She always was late. 她老是迟到。
为了强调等原因，有时频度副词可位于句首或句末(尤其受 very, only修饰时)：
Very often the phone rings when I’m in the bath. 电话经常在我洗澡时响起。
Do you go to the cinema very often? 你常去看电影吗?
频度副词 always 和 never 通常不位于句首，除非是祈使句：
Always remember this. 请时刻记住这一点。
Never tell him the news. 千万不要告诉他这消息。
在否定句中，有的频度副词可位于否定词not之后或之前(如usually, often)，有的频度副词则必须位于否定词之后(如 always)而有的频度副词必须要位于否定词 not 之前(如 sometimes）
He doesn’t usually come here. / He usually doesn’t come here. 他通常不来这儿。 She doesn’t always come late. 她并非总是迟到。(不能说 always doesn’t)
He is sometimes not satisfied with my work. 他有时对我的工作不满意。