我们都知道，在大学英语四级考试中，单独考察英语四级语法的题型很少，但是英语四级语法知识点却贯穿整张试卷，下面是新东方网英语四级频道为大家整理的大学英语四级语法知识，希望可以为大家带来帮助。四级及格线

2017年12月大学英语四级语法大全目录

6.2 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.

典型例题

It is not ____ to discuss the question again and again.

A.worthB.worthyC.worth-whileD.worth while

答案C. 由worth的用法可知，此句只适合词组be worth-while to do sth.。因此选C。

2017年12月大学英语四级语法大全目录