worth、worthy ，worthwhile 用法的区别

停课不停学 辨别worth worthy worthwhile，帮学生理清考点知识

this picture isn't ~ very much 这幅画不值多少钱;

Worthwhile (adj) 值得的
worthwhile 用于下列句型：
It is worthwhile doing sth./ to do sth. 干某事是值得的
但不能说：sth. is worthwhile doing/ to do
长城值得去旅游。It is worthwhile visiting/ to visit the Great Wall.
worth 用于下列句型：sth. is worth sth/ doing
此句型中只能用doing， 不能使用被动。
The museum is certainly worth a visit. =The museum is certainly worth visiting.
这个博物馆的确值得参观。
This idea is well worth considering. 这个想法很值得考虑。
worthy 用于下列句型：sth. be worthy of sth/ being done sth. be worthy to be done
这部电影值得看。The film is worthy of being seen.= The film is worthy to be seen.