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①Shewasseentodancebythem.②ShehasthatistoldtoyoubyTom?③Sheisoftenheardtosingthispopsong.被动语态中,这里为什么动词的过去分词后有to?由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果

题目详情
①She was seen to dance by them.
②She has that is told to you by Tom?
③She is often heard to sing this pop song.
被动语态中,这里为什么动词的过去分词后有to?
由于是刚刚预习九年级新课,还不太懂,请讲清楚些,如果可以,希望能够稍微帮我理一下这个比较难的知识点.
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答案和解析
被动语态的句型 肯定句:主语+be +过去分词+(by~).否定句:主语+be not +过去分词+(by~).一般疑问句:Be +主语+过去分词+(by~特殊疑问句:疑问词+be +主语+过去分词+(by~被动语态白表示某事被做,例如we cl...