16._____in the queue for half an hour,the old man suddenly realized he had left the money in the car.(  )
A.WaitingB.Having waitedC.To waitD.To have waited

分析 在人群中已經(jīng)等了半個小時之后,這位老人突然間意識到他把錢落在車里了.

解答 答案:B.
根據(jù)句意"突然間意識到他把錢落在車里了"可知,排隊等候應該是在想起錢還在車里之前的,所以動作發(fā)生在主句動作之前,故用現(xiàn)在分詞的完成時來表達;故選B.

點評 本句考查非謂語動詞的用法,答題步驟為:1.判斷是否為非謂語動詞,看是否有連詞.2.找邏輯主語.3.判斷邏輯主語與非謂語動詞的關(guān)系.4.看是否非謂語動詞動作發(fā)生在主句謂語動作之前,如果是之前,就用完成式的形式.

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