_______ the programme, these workers have to stay there for another two weeks.
A．Not completingB．Not completed
C．Not having completed D．Having not completed
C

試題分析：考查分詞做狀語。本句中的動詞complete與句子主語these workers構成主動關系，所以使用現(xiàn)在分詞的形式，如果該動作發(fā)生在主句謂語動詞之前，就使用現(xiàn)在分詞的完成式。分詞的否定式就是在前面加not。句意：因為沒有完成這個計劃，這些工人不得不又在那里待了兩個星期。故C正確。
點評：當分詞做狀語的時候，如果構成分詞的動詞與句子的主語構成主動關系，就使用現(xiàn)在分詞做狀語；當二者構成被動關系，使用過去分詞做狀語。如果分詞的動作發(fā)生在謂語動詞之前，就使用分詞的完成式。如果分詞與句子的主語沒有關系，可以使用狀語從句或者獨立主格結構。
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