下面這道冠詞考題很容易錯(cuò)，可要注意了：

“Have you seen _____ pen? I left it here this morning.” “Is it _____ black one? I think I saw it somewhere.”

A. a, the B. the, the

C. a, a D. the, a

【陷阱】誤選A，生搬硬套冠詞用法規(guī)則：第一次提到某人或某事物用不定冠詞，第二次再提到該人或該事物時(shí)用定冠詞。

【分析】最佳答案為C。第一空填a，比較好理解;而第二空填a是因?yàn)榇司渲械膐ne 并非指前面提到的 pen，即這里的 one 與前面的 pen 并非同一事物，這從后面一句的 I think I saw it somewhere 可以清楚地知道。請(qǐng)比較下面一題：

“Have you seen _____ pen? I left it here this morning.” “Is it _____ black one? I found it in the corner.”

A. a, the B. the, the

C. a, a D. the, a

此題的最佳答案是 A不是C。請(qǐng)注意其后 I found it in the corner這一信息，它表明說明者是拿著筆在與對(duì)方說話。請(qǐng)?jiān)倏匆粋€(gè)類似的例子(from www.yygrammar.com)：

“Have you seen _______ new bike? I put it here just now.” “Is it _______ white one? A boy has ridden it away.”

A. a; a B. a; the

C. the; the D. the; a

此題答案選A，注意其后的 A boy has ridden it away 表明自行車已不在說話者身旁。