7．In the past ten years，a lot of trees _______ on the hills in my hometown．（　　）
A．plantedB．were planted
C．have plantedD．have been planted

分析 在過去的十年里，我家鄉(xiāng)的山上種植了許多樹木．

解答 答案：D
根據(jù)句中的時間狀語In the past ten years（在過去的十年里）可知，本句應(yīng)使用現(xiàn)在完成時；由于本句的主語 a lot of trees 與謂語動詞plant構(gòu)成被動關(guān)系，因此此處應(yīng)使用現(xiàn)在完成時態(tài)的被動語態(tài)（have/has+been+done）；故選D

點評 做本題時，首先應(yīng)根據(jù)句中的時間狀語來判斷要使用的時態(tài)；其次通過正確分析主語與謂語動詞的關(guān)系來確定應(yīng)使用的語態(tài)；由于本題考查的是現(xiàn)在完成時態(tài)的被動語態(tài)，因此應(yīng)熟練掌握現(xiàn)在完成時態(tài)的意義及用法．

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