Have/has been 后一定要加doing sth.吗?
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Have/has been 后一定要加doing sth.吗?
Have/has been 后一定要加doing sth.吗?
Have/has been 后一定要加doing sth.吗?
不一定
been 是do 的过去分词
have been doing sth 是现在完成进行时 即表示从以前到现在一直在进行的动作 例如
I have been working here for three years 我在这工作三年了 (强调一直在这工作)
have been +Ved 表示现在完成时的被动
也可以加名词或者介词短语
你不要这样记,不好,你就记住been是be动词的过去时,或过去分词。你就按照be后面接什么been后面就接什么。这样方便你理解
Have/has been 后一定要加doing sth.吗?
have/has/had加been是什么时态
have/has been后接地点名词时,中间为什么要加to
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