3．-I counted sheep，I drank milk and I tried everything，but nothing helped．
-It seems you _____ too much recently．Try some sleeping pills．（　�。�
A．workedB．work
C．had workedD．have been working

分析 --我數(shù)羊，我喝牛奶并且嘗試了所有的方法，但是什么都不起作用．
--似乎你最近工作太多了；嘗試一些安眠片．

解答 答案是D．本題考查現(xiàn)在完成進行時．題干中"recently"是現(xiàn)在完成時的標志，根據(jù)答句中的"Try some sleeping pills"可知失眠的狀態(tài)還在進行中，故排除A、B和C，用現(xiàn)在完成進行時，表示從過去某時開始到現(xiàn)在這一段時間里一直延續(xù)著的動作還在繼續(xù)進行，故選D．

點評 完成進行時的解題首先要理解其時態(tài)的基本用法--表示從過去某時開始到現(xiàn)在這一段時間里一直延續(xù)著的動作，特別關(guān)注其"在進行中"的特征；然后在語境中尋找動作的時間依據(jù)進行判斷．

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