过去进行时,现在完成时,过去完成时,将来完成时的组成

1过去进行时：表示在过去某一时刻或某一段时间内进行或发生的动作.其形式为was /were + V-ing.例句：We were watching TV from seven to nine last night.昨天晚上七点到九点的时候我们在看电视.2现在完成时 未完成...我给你从百度上粘过来的：肯定句：主语+have/has+过去分词否定句：主语+have/has not +过去分词疑问句：Have/Has+主语+过去分词 现在完成时7.(1) 现在完成时的句型结构①肯定句：主语+ have/has+ 过去分词②否定句：主语+ have/has+ not+过去分词③疑问句：Have/Has +主语+过去分词(2) 现在完成时的用法①表示到目前为止曾经有过的或未曾有过的经历和体验。常和never, ever, several times等连用。如：I’ve never been to Africa. Have you ever been to Tokyo?I’ve been there three times. ②. 表示某动作从过去开始，现在刚刚完成，对现在有一定的影响。常与just, already, yet, so far等词语连用。 如：He has just finished his new book. 注意：just now用于过去时。③.表示某动作从过去开始，一直持续到现在，可能还会持续下去。通常与 for或since连用。如：I have lived in Qingdao for 6 years. /since 6 years ago/since 2003/ since I came to this city.It is/has been …+ since….It’s been seven years since we last saw each other. 注意:for+一段时间，since后接一个过去的时间点或一般过去时的句子。④ 在表将来的时间状语和条件状语从句中代替将来完成时。You can go home when you have finished your work. 主动语态变被动语态：(1) 一般现在时的被动语态：am [is, are]+过去分词We are taken good care of at school. 我们在学校受到很好的照顾。(2) 一般过去时的被动语态：was [were]+过去分词The house was built ten years ago. 这座房子是10年前建的。(3) 一般将来时的被动语态：will be+过去分词The meeting will be held at two this afternoon. 会议将于今天下午2点举行。(4) 现在完成时的被动语态：have [has]been+过去分词All the work has been done now. 所有的工作现在都做好了。(5) 过去完成时的被动语态：had been+过去分词He said the work had been finished. 他说工作已完成了。(6) 现在进行时的被动语态：am [is, are] being+过去分词My watch is being repaired by him. 我的表正在由他修理。(7) 过去进行时的被动语态：was [were] being+过去分词He said that the man was being operated on. 他说那个人正在动手术。(8) 过去将来时的被动语态：would be+过去分词