8.Experts warn that medical waste from hospitals,if____ prop
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8.Experts warn that medical waste from hospitals,if____ properly,may contribute to spreading diseases.
A.not handled B.not being handled C.not to be handled D.not having been handled
为什么不能用动名词形式?是if 后不能接还是什么原因?
A.not handled B.not being handled C.not to be handled D.not having been handled
为什么不能用动名词形式?是if 后不能接还是什么原因?
Experts warn that medical waste from hospitals,if____ properly,may contribute to spreading diseases.
选 A.not handled
根据句意:医疗垃圾如果不正确处理,将会传播疾病.
实际上是“被处理”,有被动关系,用过去分词为宜.
其实是if 从句的省略形式.It it was not handled properly,被动语态省略了系动词和主语就是过去分词的形式.
再问: 也可以理解为将来时态的吧,“如果将来不合适的处理”?B.C为什么不行?
再答: Sorry, I made a mistake just now. 应该是If it is not handled properly, 一般现在时的被动形式。B是现在分词的被动形式,表示的是正在被处理,与句子的意思有差异。C是不定式的被动形式,有将来或者目的的意思,动作没有被实施。这里应该指常态,A最好。
选 A.not handled
根据句意:医疗垃圾如果不正确处理,将会传播疾病.
实际上是“被处理”,有被动关系,用过去分词为宜.
其实是if 从句的省略形式.It it was not handled properly,被动语态省略了系动词和主语就是过去分词的形式.
再问: 也可以理解为将来时态的吧,“如果将来不合适的处理”?B.C为什么不行?
再答: Sorry, I made a mistake just now. 应该是If it is not handled properly, 一般现在时的被动形式。B是现在分词的被动形式,表示的是正在被处理,与句子的意思有差异。C是不定式的被动形式,有将来或者目的的意思,动作没有被实施。这里应该指常态,A最好。
8.Experts warn that medical waste from hospitals,if____ prop
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