2014最新英语高三必修知识点:易错单词盘点
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3. 现在分词和过去分词作状语时的用法比较。
不管是现在分词还是过去分词单独作状语,其逻辑主语必须与主句的主语一致。分词作状语通常可转换成一个相应的状语从句或并列句,如果状语分句或并列句中的谓语动词为被动结构,就用过去分词;如果状语分句或并列句中的谓语动词为主动结构,就用现在分词。例如:
When compared with the size of the whole earth , the biggest ocean does not seem big at all.
分词部分相当于When the biggest ocean is compared with the size of the whole earth, 主语与分词是被动关系,所以用过去分词。
When comparing it with the size of the whole earth, we find that the biggest ocean does not seem big at all.
When we compare it with the size of the whole earth... 主语与分词是主动关系, 所以用现在分词。
Faced with a bill for$10,000(=Because he is faced with a bill for$10,000), John has taken an extra job.
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