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一道英语选择题.I don't think it is ____taking the trouble to explai

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一道英语选择题.I don't think it is ____taking the trouble to explain the question to him .
A.worth B.worthy C.worth of D.worthwhile
我也是选A的,但是是错的。
一道英语选择题.I don't think it is ____taking the trouble to explai
一道英语选择题.I don't think it is ____taking the trouble to explain the question to him .
A.worth B.worthy C.worth of D.worthwhile
答:D
译:我认为再费神给他解释这个问题不值.
析:worth是介词,后跟名词(动名词):This book is well worth reading.
worthy才是形容词,sth.is worthy of being done,或Sth.is worthy to be done.
worthwhile作表语时,其主语为事情,可用不定式也可用动名词,用于两种句型:
it is worthwhile to do sth.
It is worthwhile doing sth.