关于现在完成时态have + been +doinghave+did 这两个有什么区别?

关于现在完成时态have + been +doinghave+did 这两个有什么区别? have been +形容词是什么时态,怎么总感觉像现在完成进行时. have+been+现在分词构成什么时态? have/has+been+现在分词是什么时态? 英语完成时态的构成请问英语完成进行时态的构成为什么不是have,has加现在分词呢?为什么要加been呢? since i graduated from a university in 1999,i have been working in an company为什么这里用了现在完成进行时?而不是现在完成时态? 现在完成进行时态与现在进行时态的区别是什么?例如i have been writing a letter和i am writing a letter例如i have been writing a letter和i am writing a letter有什么区别 [现在进行完成时]一直和你在一起：have been with you 还是 have been being with you如题关于一个现在进行完成时的问题：“一直和你在一起”是have been with you 还是 have been being with you? have+been是什么时态 为什么现在完成进行时是have/has+been+动词进行时态 但是在“I have been为什么现在完成进行时是have/has+been+动词进行时态 但是在“I have been married for two years ”这句话里marry没加ing 关于英语现在完成时态的小问题_____ you ______Dianche Lake these days?Yes,I have.The water is getting cleaner and cleaner and the mountains are more beartiful.A Have;gone to B Have; been to C Have;been in 我想问一下完成时态中 has been ,have heen 和had been 能举例吗, 关于英语时态的问题.在两本书上有两句句子.都写是现在完成进行时.1：I have been coverd.2:I have been studying for 2 years before you come.为什么两个句子动词 1句是ING形式 1句是ED形式.请高手指教下. 英语句子中各种时态分别有些什么特定词,比如比如 现在完成时是there be现在完成进行是there have been 关于时态的英语题I have worked here for 20years.I have been working here since 1990.一个是现在完成时,一个是现在完成进行时,但两个都有表示从过去某一时间开始一直延续到现在并有可能继续进行下去的 I have been very busy the last few days 这句话算什么时态?have been doing是现在完成进行时 have been done 应该是完成时的被动语态 那我上面这句话算什么呢?have been 有什么用法也帮我补充下 We_______used to getting up early in order to catch the early bus.为什么要填have been,用are 如果必须用have been,如何判断这句话是现在完成时态? 新概念问题：1.Visitors have been asked to keep the woods clean and tidy.请问这是现在完成时态吗?主语+have+动词过去分词 为什么这里面有两个过去分词?been asked?