及物动词,表示“是,在”.
这句话启用了现在完成时,所以be启用其过去分词形式been.但be本身的词性不受影响.
当be的词性为及物动词时,有这样一个例子你可以看一看——
Tony is in the office.
be后面跟的是介词短语,同理,be启用的是一般现在时中的单数第三人称（is）.
I HAVENT BEEN OUTDOORS FOR SO LONG中的BEEN是什么词性?
2个回答
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