摘要：worth 永远不作前置定语，需后置修饰名词（如：a book worth $100）；

worth‌ 仅作表语 不可作定语 This book is ‌worth‌ reading.

worthy‌ 可作表语 可作定语 He is a ‌worthy‌ gentleman. (定语) / His effort is ‌worthy‌ of praise. (表语)

worthwhile‌ 可作表语 可作定语 Nursing is a ‌worthwhile‌ career. (定语) / The trip was ‌worthwhile‌. (表语)

worth 永远不作前置定语，需后置修饰名词（如：a book worth $100）；

worthy 作定语时直接修饰名词（如：a worthy cause）。

词汇‌ ‌可用 very 修饰‌ ‌可用 well 修饰‌ ‌例句‌

he film is ‌well worth‌ watching. (✗ very worth)

That is ‌very worthy‌ of attention.

Teaching is a ‌very worthwhile‌ job.

核心搭配结构‌

1. worth‌

+ 名词/代词‌：

The necklace is ‌worth‌ $1000.

+ 动名词（主动表被动）‌：

The problem is ‌worth discussing‌. (✗ to discuss / being discussed)

2. worthy‌

+ of + 名词‌：

His action is ‌worthy of admiration‌.

+ of + 动名词被动式 / + to be done‌：

The plan is ‌worthy of being considered‌ = ‌worthy to be considered‌.

3. worthwhile‌

+ to do / doing‌：

It is ‌worthwhile to visit‌ the museum = ‌worthwhile visiting‌ the museum.

直接修饰名词‌：

They made a ‌worthwhile investment‌.

来源：群星满天空