题目内容
16.People should throw litter into different bins in order to recycle it.(改写句子,句意不变)Litter shouldbe throwninto different bins in order to recycle it.
分析 人们应该将垃圾扔进不同的垃圾箱是为了再次利用.
解答 答案:be thrown.
主语litter是动词throw的承受者,构成被动关系,结合情态动词should用情态动词被动语态---情态动词+be+过去分词,throw的过去分词thrown,故答案是be thrown.
点评 情态动词的被动语态---情态动词+be+过去分词的呈现,各种类型的被动语态的构成要理解掌握.
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