11．______ the programme，they have to stay there for another two weeks．（　�。�
A．Not completingB．Not completed
C．Not having completedD．Having not completed

分析 因?yàn)闆]有完成這個(gè)項(xiàng)目，他們不得不又待了兩個(gè)星期．

解答 答案C   complete the programme與句子主語they的關(guān)系是主動(dòng)的，應(yīng)該用現(xiàn)在分詞形式，可以排除B項(xiàng)．not complete的動(dòng)作發(fā)生在have to stay之前，所以應(yīng)該用完成式的現(xiàn)在分詞，可以排除A項(xiàng)．D項(xiàng)的否定形式不對(duì)，非謂語動(dòng)詞的否定式一般是在其前加not．故答案為C

點(diǎn)評(píng) 對(duì)于非謂語動(dòng)詞的考查，應(yīng)該學(xué)會(huì)先判斷語態(tài)，根據(jù)主被動(dòng)關(guān)系可以排除部分干擾項(xiàng)；再根據(jù)時(shí)態(tài)排除部分干擾項(xiàng)，對(duì)于非謂語動(dòng)詞否定式的表達(dá)歸納如下：（1）不定式to前面加not  （2）過去分詞前面加not（3）doing和having done的前面加not．

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