continued continuing continuous continual的区别

continuous 连续不断的（强调一个动作没有间断过）
continual 反复的，频繁的（强调一个动作在某个时期反复出现）
continued和continuing可以互换，都表示“连续不断的”“继续不变的”，但是它们只能用于名词前。
其实总的来说，它们之间的差异正逐渐消失，特别是continual亦含有continuous相同的意义，尤指不愉快的事：Life was a continual struggle for them.生活对他们来说是不断的挣扎。

continued adj. continuing to happen for a long time, or happening many times
continuous adj. continuing to happen or exist without stopping or without any interruptions
continual adj. continuing for a long time without stopping.
continuing keeping happening,existing, or doing something for a longer period of time without stopping.

continual describes separate actions which are repeated over a period of time:
These continual interruptions are driving me mad.

差不多吧