had written,was written,is written,have written有什么差别?
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had written,was written,is written,have written有什么差别?
had written,was written,is written,have written有什么差别?
had written,was written,is written,have written有什么差别?
1.had written是过去完成时态.发生在过去的过去.比如说:“我在他写这类文章之前就已经写过了”.他的文章已经写好了,而我的比他更早写好.就应该是“I had written this kind of essay before he wrote it."
2.was written和is written是被动语态.时态不同.“这首歌是他写的”
“this song is written by him."
“这首歌是他十年前写的”:“this song was
written by him 10 years ago.”
3.have written是现在完成时.表示到现在为止
写完.比如.“我现在已经写了3本小说”就是“I have written 3 novels by now."
had written,过去完成时
was written,过去被动
is written,现在被动
have written,现在完成时
had written, have written 完成时,前者是过去完成时,后者是一般现在完成时
is written, was written 前者是一般现在时的被动语态,后者是一般过去时的被动语态
以上涉及到一个时态的问题
had written 过去曾经写过,He had written a book two years ago.
was written 被…写,由…创作(过去,已经写完)。 This novel was written by Marks.
is written 被…写,由…创作(现在)。 This letter is written by Lucy.
have written 已经写完 He has written 3 book since 1997.