worth的用法

e worth sth 比如：this book is worth three dollarsbe worth doing 比如：this book is worth reading （主动表被动）be worthy of being done 比如：this book is worthy of being read （这里不能主动表被动）be worthy to be done 比如：this book is worthy to be readit is worthwhile to do sth 比如：it is worthwhile to read this book

你是需要完整的还是只是固定搭配？