worth的用法

　　worth的用法
　　adj.值得(做某事); 有(做某事)的价值
　　n.价值; 用处
　　常见结构
　　be worth doing sth.值得(做某事);有(做某事)的价值
　　be worth sth.用于“数量、持续时间等”的名词之后，表示某物价值多少金额。
　　The new car cost a lot of money, but it’s certainly worth it.
　　买这辆新汽车花了很多钱, 但确实物有所值。
　　The thieves stole one million pounds? worth of jewellery.
　　窃贼偷走了价值100万英镑的珠宝。
　　易混辨析
　　worth/worthy/worthwhile
　　“be worth+n.”结构中，当名词为金钱时，表示“……值……钱”。
　　be worth doing sth.　……某事值得被做
　　“be worthy of+n./doing”当名词为抽象名词时，表示 “……值得……”。
　　be worthy to be done/be worthy of being done
　　某事值得被做
　　It is worthwhile to do sth. 值得做某事
　　It is worthwhile doing sth. 值得去做某事
　　It is worthwhile for sb. to do/doing sth.
　　值得某人去做某事
　　The article is worthy of careful study.
　　=The article is worth studying carefully.
　　=The article is worthy of being studied carefully.
　　=The article is worthy to be studied carefully.
　　这篇文章值得仔细学习。
 
　　常见练习
　　单项填空
　　①This book is worthy of twice .(2009·12·江苏南京月考)
　　A. Reading B. read
　　C. having read D. being read
　　②He is well skilled playing the piano, so his music is worth . (2009·12·山东烟台模块检测)
　　A. with; listening B. with; listening to
　　C. in; listening D. in; listening to
　　解析： ①选D。 be worthy 后可以用不定式的被动语态或of being done结构，而worth后用动名词的主动语态表达被动概念。
　　②选D。be skilled in也可以用be skilled at后跟名词或动名词表示，意思是“在……方面熟练的;在……方面有能力的”。worth意思是“值得”,后跟动名词的主动语态表达被动概念。在句中，music作listen to的逻辑宾语，而listen为不及物动词，因此to不可以去掉。