worthyworthworthwhile作表语.doc

worth,worthy,worthwhile的用法由一道改错题想到的He spent a whole day in the countryside,and Li Ming said what he had done was worth. (将worth 改为worthwhile)1. worth不能单独放在名词前面作定语，当它与while构成worthwhile时则可作前置定语。这时，worthwhile = worthy.例如： This is a worthwhile book. （该句可改为：This is a worthy book. = This book is worth leading. = This book is worthy of being read. = This book is worthy to be read. ）这本书值得一读。 It is worthwhile effort. 这是值得努力做的事。2. 用作后置定语。worth放在名词后面作定语时，必须接一个动名词。例如： Tianjin is a city worth visiting. 天津是一个值得参观的城市。 This is a question worth discussing. 这是一个值得讨论的问题。（一）worthy作表语1. worthy与of连用时，构成be worthy of，of的后面可以接名词或动名词的被动形式。例如： That is worthy of note. 那件事值得注意。 This phenomenon is worthy of being studied. 这种现象值得研究。2. worthy可与动词不定式连用，动词不定式也要用被动式。但worthy后面不可再用介词of，须直接接不定式。例如： This problem is worthy to be considered. 这个问题值得考虑。 The film is worthy to be seen again. 这部电影值得再看一遍。（二）worthy作定语1. 作前置定语。例如： This is a worthy English-Chinese dictionary. 这是一本有价值的英汉词典。 This is a worthy article. 这是一篇值得一看的文章。2. 作后置定语时，必须用“worthy of +名词”结构。例如： There is nothing worthy of mention. 没有值得一提的事情。 This is behaviour worthy of praise. 这是值得称赞的行为。一）worthy作表语1. worthy与of连用时，构成be worthy of，of的后面可以接名词或动名词的被动形式。例如： That is worthy of note. 那件事值得注意。This phenomenon is worthy of being studied. 这种现象值得研究二）worthy作定语1. 作前置定语。例如：This is a worthy English-Chinese dictionary. 这是一本有价值的英汉词典。This is a worthy article. 这是一篇值得一看的文章。2. 作后置定语时，必须用“worthy of +名词”结构。例如：There is nothing worthy of mention. 没有值得一提的事情。This is behaviour worthy of praise. 这是值得称赞的行为。二、从所使用的修饰语来看worth 习惯上不用 very 修饰（要表示类似意思可用 well），而 worthy 和 worthwhile 则可以用副词 very 修饰。如：That is very worthy of our attention. 那件事很值得我们注意。Nursing is a very worthwhile career. 护理工作是很值得干的职业。但习惯上不说：The work is very worth doing. （very 应改为 well）表示比率)值(多少钱), 值得;有价值；值钱 The picture is worth at least twenty pounds.那个地方值得一去。正：The place is worth a visit. 正：The place is worthy of a visit.正：The place is worth visiting. 正：It is worth visiting the place.正：The place is worthy of being visited.正：The place is worthy to be visited.正：It is worthwhile visiting the place.正：It is worthwhile to visit the place.worth 不可单独作谓语（It is worth doing sth 除外）worthwhile=worth while 可以单独作表语。如：这个问题值得考虑The problem is worth considering. (不用worthwhile)It is worth considering the problem. (可换用worthwhile)It is worthwhile to cons