1.如果 pp=present participle 用writing做例子， 不同情况有不同时间式用途如下： I had been writing for a long time when the phone rang.-'had been writing' - past perfect continous tense I have been writing this letter since this morning.'have been writing'- present perfect contin...
首先is和was 在现在时态用is 过去事态用was had been /(pp)是过去完成事态的用法。一般用在时间方面，如：It had been for 3 years since he left I had finished it yesterday.has been/(pp) p.s.pp 是过去分词 是一般完成事态 she has finished it now she had finished it yesterday ...
网络过去完成式 网络释义 1. 过去完成式 过去完成式(had PP):表示过去某时间为止已有过或未有过的经验或指在过去某时间之前的继续动作。例:He had been there f… tw.knowledge.yahoo.com|基于2个网页
先说最尾has/have been问题，你的认知是对的present perfect continue系has/have been verb-ing.但你可能未学或没留意tense还有主动式和被动式。has/have been pp.便是被动式。记住例如X will be / have been pp等出现verb-ed(pp)的话一定是被动式(意思是X是被动物，不是动词的主角/主词。 回...
解析 Pp是英语中用来指代“过去分词”的,完整的英语是past participlehas/have donehad donehas/have been donehad been done以上结构中的done就是代表了过去分词,你也可以写成pp结果一 题目 完成时态中pp是什么意思hashad 加pp 答案 Pp是英语中用来指代“过去分词”的,完整的英语是past participlehas/have done...
求几个被动语态的句子一般现在时一般过去时现在进行时过去进行时过去将来时一般将来时现在完成时过去完成时情态动词句行:1.am/is/are+pp.2.had been+pp
pret & pp dehave English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or visitthe webmaster's page for free fun content. ...
1. 一般现在时 He cleans the blackboard. The blackboard is cleaned by him.2．一般过去时 He cleaned the blackboard. The blackboard was cleaned by him.3．一般将来时 He will clean the blackboard. The blackboard will be cleaned by him.4．现在进行时 He is cleaning the black...
过去完成式 had+pp 未来完成式 will have+PP 3. 含义 1. 发生事情跟结果状况: 已经干嘛干嘛了 2....
pt. and pp. ofhave. WordReference Random House Unabridged Dictionary of American English © 2024 had(had),USA pronunciationv. pt. and pp. ofhave. Collins Concise English Dictionary © HarperCollins Publishers:: had/hæd/vb the past tense and past participle ofhave ...