1、Worth worthwhile worthy 这三个词总是会放在一起说。worth 后面应该加doing
It is worth learning a new skill.
学习一门新技能是值得的。
2、worthwhile后面可以加to do
It is worthwhile to watch a movie for relaxation since we have been so busy lately.
最近我们都那么忙，看场电影放松一下是很值得的。
3、worthy后面加of
The students who have unsatisfactory grades also should be worthy of attention.
成绩不够理想的学生也是值得关注的。