was changed和has changed ; have been和had been ； have done 和 has done 区别.希望举例子说明说明.

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was changed和has changed ; have been和had been ； have done 和 has done 区别.希望举例子说明说明.
was changed和has changed ; have been和had been ； have done 和 has done 区别.
希望举例子说明说明.

was changed和has changed ; have been和had been ； have done 和 has done 区别.希望举例子说明说明.
was changed 是change的过去式的被动式
has changed 是change的现在完成时
have been 是现在完成时的被动式
had been 是 过去完成时的被动式
have done 是 现在完成时 （用于第一,二人称单数或者所有人称的复数形式）
has done 是现在完成时 （用于第三人称单数形式）

was changed 谁谁 被改变
has changed （现在完成时）
had been （过去完成时）
have done (第一人称 如我 ， 已经 做过 什么事)
has done （第三人称，如她，已经做过什么事）
加分呐O(∩_∩)O~

过去试，完成时；完成时，过去完成时；完成时，一个主语是复数一个是单数

第一个用被动语态；只要记住has只用于第三人称单数；have been用于现在完成时，had been用于过去完成时，表示过去已经完成了的。…我无语了

was changed和has changed ; have been和had been ； have done 和 has done 区别.希望举例子说明说明. our school ( ) a lot A changes B changed C was changed D has changed 一道有关于 过去式和现在完成时 ( C )--Hong Kong____a small fishing village in the past.--but it_____a lot in the past ninety years.A.was;changed B.has been;has changed C.was;has changed D.has been;changed为什么这样选 The town a lot since i was there in 1980a:has changed b:was changing c:had changed d:has been changed My life has been changed 和how my life has changed 有什么区别? The life he was used to( has changed )greatly since 1992,为什么括号里是has changed ,而不填have changed ,change changing The country life he was used to____greatly since 1992A.change B.has changed C.changing D.have changed has changed a lot和be changed a lot的差别 Everything Has Changed 歌词 Everything Has Changed链接 everything has changed 链接 Nothing has changed 歌词 The famous star Jackie chan has already arrived here Really?i ___he was coming tomorrow 为什么用tho she()her hairstyle in her hometown before she came to Chongqing for a better job a.would change b.has changed c.has changed d.was changing The country life he was used to ( ) greatly since 1992.A.change B.has changed C.changingThe country life he was used to ( ) greatly since 1992.A.change B.has changed C.changing D.have changed Though we dont know what was discussed,yet we can feel the topic____.A was changed B has been changed为什么选B 选A错在哪里 Our country ___＿a lot so far.Yes.I hope it willOur country ___＿a lot so far.Yes.I hope it will be better.A.has changed B.was changed C.is changed D.changed Nothing has changed.Everything is the same as it was.请问这里的as it was 中文怎么理解呢?