worth 只接ing
worth doing sth.
例：It's worth mentioning that I am a good man.
还有说法是worth sth.
如：He is worth the praise.
顺便解一个worthwhile,worth 只做表语,也就是接在be动词后面,而worthwhile做表语的时候后面不接to do 和doing,而且worthwhile还可以做定语（a worthwhle career),而且worthwhile的意思跟beneficial相近（有益）
顺便还还一个,worthy 的意思是有价值的,如a worthy suggestion