问题标题：
请教非限制定语从句与分词短语作定语之间的转换问题.是新概念二中的一句话,请问Theoperation,whichlastedforoverfourhours,provedtobeverydifficult可不可以改为Theoperationlastingforoverfourhoursproved
问题描述：
请教非限制定语从句与分词短语作定语之间的转换问题.
是新概念二中的一句话,请问Theoperation,whichlastedforoverfourhours,provedtobeverydifficult可不可以改为Theoperationlastingforoverfourhoursprovedtobeverydifficult.
顺便请讲解一下定语从句和分词短语间的转换问题，
陈金来回答：
可以的.
现在分词=which+主动语态,过去分词=which+被动语态
例：
apackageofmaterials,【circulated】toallschools……
=apackageofmaterials,【whichwascirculated】toallschools……
asecondpack,【supporting】schoolsagainstbullying,【produced】thefollowingyear
=asecondpack,【whichsupported】schoolsagainstbullying,【whichwasproduced】thefollowingyear
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