作业帮She___ (sit) there for a long time without saying anything
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She___ (sit) there for a long time without saying anything
She___ (sit) there for a long time without saying anything
She___ (sit) there for a long time without saying anything
has been sitting
She has been sitting there for a long time without saying anything.
她已经在那里一语不发地坐了很久.
用 现在完成进行时
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
或者表示在说话时刻之前到现在正在进行的动作
sat
has been sitting
句子意思是 她在那坐了很久，一直没有说话
是指过去一点到现在的过程，有到现在也没有说话的含义
had been sitting