题目内容
9.Iwas washing(wash) the dishes while my sister was sweeping the floor.分析 当我的妹妹在扫地时,我在洗碗.
解答 答案:was washing
while引导的时间状语从句常表示主从句的动作同时发生,均要用进行时.由从句中的was sweeping the floor可判断出是过去进行时,所以主句也要用过去进行时,即was/were+现在分词.主语I是第一人称单数,be动词用was,再加上wash的现在分词即可.
点评 此题首先要根据while引导的时间状语从句的知识点判断出正确的时态,再者要熟悉该时态的结构,并注意主谓保持一致.
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