题目内容
3.They swam in the river.(用this time yesterday 改写)They wereswimmingin the river this time yesterday.
分析 --他们在河里游泳.
--昨天的这个时间他们正在河里游泳.
解答 答案:swimming.考查时态.根据所给要求,this time yesterday昨天的这个时间,时间状语应该是过去进行时态.表示过去某时正在进行的动词.结构是was/were+动词的现在分词.swim的现在分词是swimming.答案是swimming.
点评 本题考查过去进行时态用法.结构是was/were+动词的现在分词,要根据主语的单复数选择be动词的单复数.还要注意动词现在分词的变法.
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