题目内容
20.The doctors areoperating (operate) on the patient now.分析 现在医生们正在给病人做手术.
解答 答案:operating
根据该空处在句中作谓语故填入所给动词operate的正确形式,根据句中的时间状语now可确定为现在进行时态,其结构为is/am/are+现在分词,根据空格前已有助动词are,故直接填入operate的现在分词即可,故答案为operating
点评 本题考查用所给单词的适当形式填空,首先要根据语境明确句意,然后再根据相关语法对所给单词在形式上做出正确的变化.
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