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最佳答案：do-did-done
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最佳答案：过去分词是动词的一种变化可以表示被动、完成,有固定结构和搭配；在句子成分里可做定语、状语、宾语补足语
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最佳答案：完成事态会用到 be done是被动语态
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最佳答案：给你举个例子：He made himself beaten by Tom.这里 himself 是动词beat 的对象,是受动者He made Tom beat
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最佳答案：uy bought boughtdo did donehave had hadsee saw seenopen opened opened
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最佳答案：过去式：was saw went did met ran cut had made过去分词：been seen gone met run cut had mad
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最佳答案：draggedseizedbecamediddroveatefellflewhadranswamaskedpromisedphonedagreedsawforg
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最佳答案：答：1.一般都表被动且完成：the house built last year.= the house which was built last year.房子
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最佳答案：seem可用作连系动词或不及物动词,意为“似乎；好像”,其常见用法现归纳如下：一、“主语+ seem +（to be ）+表语”,表语多为名词或形容词,有时是其
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最佳答案：你觉得他的报告怎么样How do you like the lecture (given by him)?give a lecture,做报告.这里用过去分词形