题目内容：

Have you seen a ( )pen I left it here this morning.Is it( )black one?I think I saw it somewhere.
Is it ( ) black one I think I saw it somewhere.
这两个空都填什么?请说明原因.

优质解答

Have you seen a (ny )pen 一般疑问句,用any指任何的
I left it here this morning.
Is it(a )black one?一个黑色的,用冠词a
I think I saw it somewhere.

追问：

额..这道题要求填冠词的。

追答：

第一个空填 a a表示泛指，不确定哪个 第二个空填 the the表示特指，就特指那个黑色的

追问：

确定吗？我马上要考试的啊

追答：

确定