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hAs BEEn Do

has been doing 是现在完成进行时 一、结构 I/ we/ you/ they have been doing sth he/ she/ it has been doing sth 二、主要用法 表示从过去某时开始一直持续到现在的动作,并且还将持续下去.eg He has been working here for 2 years. 表示在说...

1. has been done: 是第三人称单数形式的现在完成时,被动语态 例:The homework has been finished 1 hour ago.作业一小时前已经被完成了 表示作业已经被完成这个事实。 2. has been doing:这也是第三人称单数形式的现在完成时,主动语态。后...

be一般现在进行时,目前正在最某事,have现在完成进行时

不可能有这个结构。 只有has been done或者has been doing。

As we confirmed with the logistics company, the parcel has been sent out and can't be withdrawn. Would you cancel this dispute first? If you do not...

Why did you choose MBA?What would you like to be doing five years after graduation?What has been your greatest accomplishment?Describe your greatest ...

创建新的项目,并在"位置"对话框 (例如对于"C:\my VID 项目") 中输入一个本地文件夹。Visual InterDev 创建新的项目后,将从原始项目 Web 文件添加到新的项目使用"添加文件..."命令。

1.to do 宾语为主动, done宾语为被动 2. He got his ears pierced.他扎了耳洞。(耳朵被扎) 3.have/has been done 被动语态的现在完成时 will be done 被动语态的一般将来时

可能是内存错误。重新装载一遍就对了

意思是该项目已被更改。你想保存它吗? 本句的时态是现在完成时。 现在完成时表示过去发生的动作对现在造成的影响或结果或表示过去的动作或状态持续到现在。 它的构成是:主语+have/has +动词的过去分词。 现在完成时有两种用法 1.过去发生的某一...

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