to be doing正在做某事 (其实就是现在进行时)to have been doing过去正在做某事,现在还在做(通常表示延续)当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.例:I'm singing(我在唱歌)She has been playing the piano for 5 years.(她已经弹了5年钢琴).(她以前在弹...
3.He felt ashamed to have done such a thing.他很惭愧做了这样的事.4.Have you been sitting here calmly and doing nothing to help them?你一直闲坐着没帮他们做点什么事吗?5.What were you doing?< 结果一 题目 to do / to be doing / to have done / to have been doing/doing/havin...
to have been doing的用法 "to have been doing"是过去完成进行时的形式,表示动作已经在过去开始,一直持续到另一个过去的时间点或事件发生时,强调动作的持续性。例如: - I had been watching TV for two hours when John came home.(约翰回家时,我已经看了两个小时电视了。) - She had been working in ...
例如,在描述一个人的行为习惯时,使用'to have been doing'可能暗示这种行为已经持续了一段时间,并且可能对未来产生影响。而在描述一个事件的发展过程时,使用'to have been doing'则可能强调事件的连续性和动态性。此外,在口语交流中,'to have been doing'还可能带有一定的情感色...
非谓语动词to have been doing形式是过去进行时态的一种形式，表示过去某一段时间内的持续动作，常常与一些时间状语或上下文中的时间信息相呼应。to have been doing的结构为“to have been + v.-ing”，它可以作为主语、宾语、表语、定语等在句子中使用。比如，“I’m very tired today because I ...
We are going to have to stop doing that because we cannot find an individual electron. 我们正要停止那么做,因为无法发现一个独立电子。 It may seem inefficient to have two programmers doing" one programmer's job", but the reverse is true. 让两个程序员去做一个程序员的工作看起来有些效率低下...
to have been doing 是动词不定式的完成进行式,表示与谓语动词同时并持续下去。beenv. 是,有(be的过去分词)例句:Ive been weeding the flower beds. 我一直在除花坛里的杂草。Weve been pals for years. 我们是多年的哥们儿了。 扩展资料Dozens of villages have been razed。 几十座村庄已被夷为平地。 I'...
to have been doing 是动词不定式的完成进行式，表示与谓语动词同时并持续下去。He pretended to have been listening to the teacher.他假装一直在听老师讲课。
再如纵向完成进行时(to have been doing):她到现在为止一直在游。她昨天晚饭前一直在游。 blog.sina.com.cn|基于10个网页 3. 不定式的完成进行式 英语语法总结... ... C)不定式的进行式 to be doing D)不定式的完成进行式to have been doingE)不定式的一般被动式 to be done ... ...
to be doing正在做某事 (其实就是现在进行时)to have been doing过去正在做某事,现在还在做(通常表示延续)当实际用的时候,to没有任何实际意义,所以这两个结构可以简写成:be doing,have been doing.例:I'm singing(我在唱歌)She has been playing the piano for 5 years.(她已经弹了5年钢琴).(...