英语句子中的被动语态如何确定用have/has/were/was
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英语句子中的被动语态如何确定用have/has/were/was
![英语句子中的被动语态如何确定用have/has/were/was](/uploads/image/z/2574040-40-0.jpg?t=%E8%8B%B1%E8%AF%AD%E5%8F%A5%E5%AD%90%E4%B8%AD%E7%9A%84%E8%A2%AB%E5%8A%A8%E8%AF%AD%E6%80%81%E5%A6%82%E4%BD%95%E7%A1%AE%E5%AE%9A%E7%94%A8have%2Fhas%2Fwere%2Fwas)
have/has是完成时,后面加been再加过去分词.
were/was是过去式,后面直接加过去分词.
用完成时还是用过去式得看句子的时间状语或根据上下文.
例句:The e-mail was sent to him yesterday.
The e-mail has been sent out.
The books have been read.
The articles were written by the famous writer.
总之,完成时强调过去动作对现在的影响,而过去式强调过去已经完成的动作,不强调过去对现在的影响.
were/was是过去式,后面直接加过去分词.
用完成时还是用过去式得看句子的时间状语或根据上下文.
例句:The e-mail was sent to him yesterday.
The e-mail has been sent out.
The books have been read.
The articles were written by the famous writer.
总之,完成时强调过去动作对现在的影响,而过去式强调过去已经完成的动作,不强调过去对现在的影响.