14．All the task          ahead of time，they decided to go on holiday for a week．（　�。�
A．had been finishedB．were finished
C．having been finishedD．been finished

分析 所有任務(wù)都提前完成，他們決定去度一個(gè)禮拜的假．

解答 答案：C 題干中有逗號分隔，沒有連詞，要用非謂語動(dòng)詞；句中finish與task之間構(gòu)成動(dòng)賓關(guān)系，要用被動(dòng)；句意表達(dá)的是已經(jīng)完成的動(dòng)作，要用分詞的完成式；分詞帶有之間的邏輯賓語，是獨(dú)立主格結(jié)構(gòu)．故選C．

點(diǎn)評 獨(dú)立主格結(jié)構(gòu)由兩部分組成，前一部分是名詞或者代詞，后一部分是非謂語動(dòng)詞（不定式、現(xiàn)在分詞、過去分詞）或形容詞、副詞、名詞或介詞短語．獨(dú)立主格結(jié)構(gòu)本身不是句子，在句子中作狀語，表時(shí)間、原因、條件、伴隨、目的及狀態(tài)等．

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