2015年职称英语考试已经开始备考，本阶段应该多整理一些基础词汇和语法。为此，网校特整理了“2015年职称英语考试语法知识”供您参考，希望对您有帮助！

worth的用法

worth,worthy,worth-while都为adj.意为“值得”。

1.worth:be worth+n.当名词为金钱时，表示“…… 值得……”

be worth doing sth.“……某事值得被做”

The question is not worth discussing again and again.

2.worthy：be worthy of +n.当名词为抽象名词时表示“……值得……”

be worthy to be done.某事值得被做

The question is not worthy to be discussed againand again.

3.worth-while:be worth-while to do sth.值得做某事

worth while:It is worth while doing sth

It is worth while sb to do sth.