always,often,usually 如何区别?

alwaysad。1。总是,经常They always make fun of Mr。Smith。他们总是嘲弄史密斯先生。2。永远,一直Children's Day is always the first of June。儿童节一直是六月一日。3。(动词用进行时)老是,一再I'm always misplacing my glasses。我老是将眼镜乱放而找不到。4。(与can/could连用)随时You can always resign if you feel unhappy。如果你不满意,随时可以辞职。oftenad。1。常常,时常We often go hunting。我们常常去打猎。He is often late for class。他上课时常迟到。2。往往,通常Man is often taller than woman。一般说来男子比女子高。usuallyad。1。通常地;惯常地