UC知道被动语态的助动词？
来源：百度知道 编辑：UC知道 时间：2024/05/15 08:35:04
情态动词、助动词的被动语态
我书上写
seem to
appear to
happen to
have to +be done
used to
be used to
seem ,appear ,happen ,used ,be used 也是助动词？
我书上写
seem to
appear to
happen to
have to +be done
used to
be used to
seem ,appear ,happen ,used ,be used 也是助动词？
只有及物动词才有被动语态，你所说的seem ,appear ,happen ,used ,be used 不是助动词．被动语态的助动词只有be
被动语态由“助动词be＋及物动词的过去分词”构成
建议去看看http://bbs5.xilu.com/cgi-bin/bbs/view?forum=lagou100&message=857