Mary, stop to have a rest. You _________ the flowers in your garden for nearly two hours.
A.a(chǎn)re wateringB.were watering
C.waterD.have been watering
D

試題分析:考查時態(tài):句意:瑪麗,停下來休息一下,你在花園澆花有兩個小時了,說明澆花這個動作是從過去一直持續(xù)到現(xiàn)在,用現(xiàn)在完成進(jìn)行時,選D。
點評:時態(tài)的考查要放在上下文的語境中進(jìn)行,要注意抓住句子的關(guān)鍵詞。現(xiàn)在完成進(jìn)行時表達(dá)的動作是從過去到現(xiàn)在一直在進(jìn)行的動作,有明顯的時間暗示。
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