经常英语什么说ofteralwaysusualconstantlycontinuallyfrequently有什么不一样

often 时常,常常
always 总是
usual 通常的,有时候
He came home later than usual.
他回家比平时迟.
上面三个都是形容词.
constantly
She is constantly changing her mind.
她经常改变主意.
continually
1.不停地
2.屡屡地,一再地
The baby is continually screaming.
那婴孩老是尖声喊叫.
frequently
频繁地,屡次地
This question is frequently asked.
这个问题屡次被提出.
这三个词是副词

ofter
有什么不一样，分别什么用？