731　worth用法难点

① worth作形容词用时，表示“值得……的，价值……的”，只能作表语，但不可单独作表语，后面必须跟名词、代词或动名词，结构为：

be worth sth. （a visit，much money）

be worth doing（要用动名词的主动形式表示被动意义）

This picture is worth 500 dollars. 这幅画值500美元。

His suggestion is worth our consideration. 他的建议值得我们考虑。

How much is the pen worth？

这支钢笔值多少钱？

What is the pen worth？

This book is worth reading again. 这本书值得再读一遍。

The question is worth thinking over. 这个问题值得仔细考虑。

Knowledge is worth working for. 知识是值得追求的。

What is worth doing is worth doing well. 值得做的事就值得做好。

It's worth thinking about. 这值得考虑一下。

The suggestion is worth considering，isn't it？这个建议值得考虑，不是吗？

比较

It is worth.

（worth不可单独作表语）

It is worth being done.

（worth后不可跟动名词被动式）

It is worth doing.

它值得做。

提示

①表示“很值得……”，要说be well worth…，不说be very worth…；表示“更值得……”，要说be more worth…。

This problem is well worth discussing. 这个问题很值得进一步讨论。

This film is well worth seeing again.

这部电影很值得再看一遍。

This film is very worth seeing again.

That city is more worth visiting. 那座城市更值得一游。

②（be）of worth有价值的，值钱的；还有be of little worth，be of no worth，books of real worth，paintings of exceptional worth，nothing of worth等。

A college education will be of great worth to you later. 在大学受的教育对你今后会大有帮助。

③在be worth doing结构中，句中的主语就是动名词的逻辑宾语，因此，动名词后面不可再有宾语，但可以有状语。

这本书值得买。

This book is worth buying.

（buy this book）

This book is worth buying it.

④one dollar's worth 中的worth作名词用，意为“价值”。