worth可以用作形容词和名词。下面对其形容词用法、重点和跟worthy of、worthwhile的差别进行举例说明。
1.worth作为形容词指“值……钱的,相当于……价值的,值得……的”。需要注意的是，它后面常跟名词、代词、数字或动词的-ing形式。比如：
Our house is worth about 100 000 Yuan.我们的房子大约值10万元。How much is this painting worth?这幅画值多少钱？
1、worth用法
It isn't worth much.这不值多少钱。If you answer this question correctly, it's worth five points.答对了这道题可以得五分。
This idea is well worth considering.这个想法很值得考虑。It's worth making an appointment before you go. 去之前预约一下是值得的。
The job involves a lot of hard work but it's worth it.这工作需要花费很大力气，但是值得。The trip was expensive but it was worth every penny.这次旅行花费很大，但是花的每一分钱都不冤枉。
2.考点及释疑
1）worth作形容词时不可单独作表语，后面常常跟名词或动名词。这里的动名词的主动式表示被动。比如：This book is worth reading.这本书值得一读。
2）worth、worthwhile、worthy都可以表示“值得的”，但是用法上和搭配上有区别。
worthwhile多用于It is worthwhile to do sth句型中。比如：
It is worthwhile to take his advice.他的建议值得听取。It is worthwhile to include really high-quality illustrations.把真正高质量的插图包括进去是值得的。
The trip to Zibo this week seems to have been worthwhile.本周的淄博之行似乎是值得的。
worthy后面多跟介词of连用。比如：The exhibition contains nothing that is worthy of remark.这次展览没有任何值得看的东西。He is worthy of all your adoration.他值得你倾慕。This is worthy of being done.(=This is worth doing)这事值得做。