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While (cross) ______ the street, I saw someone waving to me. crossing现在分词作状语时,现在
While (cross) ______ the street, I saw someone waving to me. crossing现在分词作状语时,现在
游客
2023-10-09
51
管理
问题
While (cross) ______ the street, I saw someone waving to me.
选项
答案
crossing
解析
现在分词作状语时,现在分词的动作就是句子主语的动作,它们之间的关系是主谓关系;过去分词作状语时,过去分词表示的动作是句子主语承受的动作,它们之间的关系是动宾关系。另外,分词作状语时前面可用when,while, once,if,unless,though等连词,例如:When heated,water changes into steam. (水在加热时变成蒸汽。)本题中,动作CROSS是由主语I发出的,因此用现在分词crossing。
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