continuous, continual, constant, consistent 的区别和用法辨析及示例例句

continuous: 不断延伸的,连续不断的,强调中间无间断。如:Everything in the universe undergoes continuous development and change.
continual: 频频的,不停的,时断时续,中间可有间歇。如:Continual smoking is bad for health.
constant: 不断的,表示持续和惯常的重现,往往没有变化。如:He attributes his health to his constant exercise.
consistent: 一致的,符合的。如:His action is always consistent with his words.