10．The boy looked to the right and to the left，________ what to do．（　　）
A．not to knowB．didn't knowC．not knowingD．not being known

分析 那個(gè)男孩左看看右看看，不知道該做什么．

解答 答案是C．考查非謂語動(dòng)詞作伴隨狀語．句意是：那個(gè)男孩左看看右看看，不知道該做什么．題干中已有謂語動(dòng)詞looked，且主語the boy和動(dòng)詞know之間是主動(dòng)關(guān)系，所以用動(dòng)詞know的ing形式knowing作伴隨狀語．故答案是C．

點(diǎn)評(píng) 解答此類題目，首先需要明確句意，分析句子成分，根據(jù)相關(guān)語法選擇正確的答案．

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